ces
Ltd
Services ltd
FOR ALL YOUR HEATING AND WATER NEEDS
HEATING THAT WON’T COST THE EARTH
01494 792000 01494 792000 www.hdgeothermal.co.uk www.hdgeothermal.co.uk
BACKGROUND
ABOUT US H.D. Services became incorporated as a limited company in 1988. The company was formed by Frank Harris, a Civil Engineer experienced in soil mechanics and well drilling. The company initially focused on drilling water supply and soakaway boreholes and has developed their own range of sewage treatment systems, the HD-‐SM. H.D. Services recognised the compatibility between the construction of water supply boreholes and the growing Renewable Energy market. Following attendance at a European seminar on ground source heat pumps (GSHP), and after much research, H.D. Services decided to invest in the Open-‐Loop Ground Source Heat Pump market. We are a fully accredited Microgeneration Certification Scheme (MCS) company and subscribe to the Renewable Energy Consumer Code (RECC), which means that customers can be assured of a high quality installation service by a registered installer. Use of an MCS registered installer means your installation may also be eligible for financial support via the domestic Renewable Heat Incentive (RHI). The company works hard to ensure that the highest quality workmanship and service is delivered to our customers/clients and we take pride in our approach to our work. We do not employ external consultants to design, agents to sell or sub-‐contractor labour to install – all work is completed in-‐house. HOW WE WORK We have a partnering agreement with a British manufacturer with whom we work closely to ensure the highest quality installation and service. As this type of renewable heating system is best suited to new homes with under-‐floor heating, we initially focused our attention on the new-‐build market. With the development of new under-‐floor heating technology, we have now expanded into the retrofit market. We aim to provide the highest quality Open-‐Loop Ground Source Heat Pump service available in South East England. Our customers rely on our advice and flexibility to suit their individual requirements and we associate ourselves with like-‐minded suppliers. As a contractor committed to the highest service standards, H.D. Services is dedicated to completing contracts on time.
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BACKGROUND
H.D. DRILLING LTD The company can often confirm the feasibility of a proposed installation upon the receipt of a site postcode. H.D. Drilling is the sister company of H.D. Services and carries out all drilling works associated with the installation of our Open-‐Loop Ground Source Heat Pump systems. The company has been constructing water supply and soakaway boreholes throughout South East England since 1984. They have been members of the Well Drillers Association since 1988 and have a vast knowledge of the hydro-‐geology throughout South East England.
H.D. Drilling only operate cable percussion drilling rigs, the drilling method acknowledged by the Environment Agency and water companies as the most suitable way to drill the chalk aquifer. All drilling work associated with the installation of Open Loop Ground Source Heat Pumps is carried out by H.D. Drilling. Both H.D. Services and H.D. Drilling are BS EN ISO 9001 and 14001 registered companies.
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HEAT PUMPS HEAT PUMPS
For millions of years, the sun has provided sufficient energy to support life on Earth, most For millions of years, the sun has provided sufficient energy to support life on Earth, most of which is not being harnessed and is just passing us by. If we can utilise just a fraction of of which is not being harnessed and is just passing us by. If we can utilise just a fraction of this energy to heat our homes, we can move away from using fossil fuels and help put a this energy to heat our homes, we can move away from using fossil fuels and help put a stop to the destruction of our planet. One way in which we can do this is to use heat stop to the destruction of our planet. One way in which we can do this is to use heat pumps to provide heating and hot water for our homes. pumps to provide heating and hot water for our homes.
GROUND SOURCE HEAT PUMPS GROUND SOURCE HEAT PUMPS The earth is continually absorbing heat from the sun. Although the surface of the earth is The earth is continually absorbing heat from the sun. Although the surface of the earth is subject to seasonal temperature fluctuations, once below a depth of 1.5 metres, the ground subject to seasonal temperature fluctuations, once below a depth of 1.5 metres, the ground temperature is constant at between 8 and 14°C all year round. A ground source heat pump temperature is constant at between 8 and 14°C all year round. A ground source heat pump is designed to use this constantly renewed energy to supply your domestic heating and hot is designed to use this constantly renewed energy to supply your domestic heating and hot water requirements, and could reduce heating bills by more than 50%. water requirements, and could reduce heating bills by more than 50%. After experimenting with a freezer, Robert C. Webber built the first direct exchange ground After experimenting with a freezer, Robert C. Webber built the first direct exchange ground source heat pump in the late 1940s. The technology became popular in Sweden in the source heat pump in the late 1940s. The technology became popular in Sweden in the 1970s, and its acceptance has been growing slowly worldwide ever since. By 2004, there 1970s, and its acceptance has been growing slowly worldwide ever since. By 2004, there were over a million units installed worldwide, providing 12 GW of thermal energy. Each were over a million units installed worldwide, providing 12 GW of thermal energy. Each year roughly 80,000 units are installed in the United States and a further 27,000 in Sweden. year roughly 80,000 units are installed in the United States and a further 27,000 in Sweden. The basic principles of a Ground Source Heat Pump: The basic principles of a Ground Source Heat Pump: Ground source heat pumps work on the same principal as a refrigerator cooling circuit but in Ground source heat pumps work on the same principal as a refrigerator cooling circuit but in reverse. Low temperature heat is taken from the ground or ground-‐water and ‘upgraded’ to reverse. Low temperature heat is taken from the ground or ground-‐water and ‘upgraded’ to a higher temperature and used to heat the water in the heating system to provide space a higher temperature and used to heat the water in the heating system to provide space heating and/or hot water. In a typical system, for every unit of electrical energy used to heating and/or hot water. In a typical system, for every unit of electrical energy used to drive the system, between 3 and 5 units of heat are produced. drive the system, between 3 and 5 units of heat are produced. There are two types of ground source heat pump installation – closed-‐loop and open-‐loop. There are two types of ground source heat pump installation – closed-‐loop and open-‐loop. Closed-‐Loop: Closed-‐Loop: Closed-‐Loop systems pump an anti-‐freeze solution through pipes buried in the ground. The Closed-‐Loop systems pump an anti-‐freeze solution through pipes buried in the ground. The loops can be installed either horizontally in trenches or vertically in a series of boreholes loops can be installed either horizontally in trenches or vertically in a series of boreholes drilled into the ground. The overall length of these loops depends on the size of the heat drilled into the ground. The overall length of these loops depends on the size of the heat pump and the thermal conductivity of the ground in which they are laid. Heat losses pump and the thermal conductivity of the ground in which they are laid. Heat losses between the antifreeze solution and the loop-‐pipe, the loop-‐pipe and the grout surround between the antifreeze solution and the loop-‐pipe, the loop-‐pipe and the grout surround and the grout surround and the ground itself reduces the efficiency of these systems in and the grout surround and the ground itself reduces the efficiency of these systems in comparison with an open-‐loop system in which the water is in contact with the ground. A comparison with an open-‐loop system in which the water is in contact with the ground. A closed-‐loop system can, however, be installed anywhere in the country. closed-‐loop system can, however, be installed anywhere in the country.
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HEAT PUMPS HEAT PUMPS Open-‐Loop:
Open-‐Loop: Open-‐Loop systems are the most efficient ground source heat pump option. They work by taking heat out of the ground water, usually abstracted from an aquifer (a body of saturated Open-‐Loop systems are the most efficient ground source heat pump option. They work by rock through which water can easily move). As the water is in direct contact with the taking heat out of the ground water, usually abstracted from an aquifer (a body of saturated ground there are no heat losses between surfaces. The water is extracted via a borehole rock through which water can easily move). As the water is in direct contact with the and pumped through the heat pump, where heat is extracted from the water. The water is ground there are no heat losses between surfaces. The water is extracted via a borehole cooled by approximately 5˚C before being returned to the ground, where it immediately and pumped through the heat pump, where heat is extracted from the water. The water is begins to regain heat from the earth. The ground temperature in South-‐East England is cooled by approximately 5˚C before being returned to the ground, where it immediately constant at between 10 and 12°C all year round. begins to regain heat from the earth. The ground temperature in South-‐East England is constant at between 10 and 12°C all year round. This type of system will only work in areas where there is sufficient ground water available. H.D. Services Ltd prefers to install Open Loop systems because: This type of system will only work in areas where there is sufficient ground water available. H.D. Services Ltd prefers to install Open Loop systems because: • Open Loop systems require a water supply borehole and soakaway borehole; we have been drilling the chalk aquifers of South East England for over 30 years and have gained • Open Loop systems require a water supply borehole and soakaway borehole; we have considerable experience and expertise in this area. been drilling the chalk aquifers of South East England for over 30 years and have gained • An Open Loop system does not pump chemicals through the ground. considerable experience and expertise in this area. • The installation of an Open Loop system is less invasive compared to that of a Closed • An Open Loop system does not pump chemicals through the ground. Loop system. • The installation of an Open Loop system is less invasive compared to that of a Closed • An Open Loop system can also provide you with an independent water supply. This Loop system. means you could save money on your water bills and you will not be subject to • An Open Loop system can also provide you with an independent water supply. This hosepipe bans! means you could save money on your water bills and you will not be subject to hosepipe bans!
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HEAT PUMPS HEAT PUMPS
How an Open-‐Loop Ground Source Heat Pump works:
How an Open-‐Loop Ground Source Heat Pump works: At the heart of a modern heat pump is a refrigeration system. The refrigeration cycle is an effective provider or remover of heat. An open loop ground source heat pump uses water At the heart of a modern heat pump is a refrigeration system. The refrigeration cycle is an pumped from the ground (typically via a borehole) and extracts heat from it. This heat is effective provider or remover of heat. An open loop ground source heat pump uses water then raised in temperature and delivered to the domestic hot water system and the space pumped from the ground (typically via a borehole) and extracts heat from it. This heat is heating system. The highest grade temperature is available to the hot water, enabling then raised in temperature and delivered to the domestic hot water system and the space temperatures up to 65°C. heating system. The highest grade temperature is available to the hot water, enabling temperatures up to 65°C. With coefficients of performance (COPs) of up to 5.0, open-‐loop ground source heat pumps offer an environmentally friendly source of heating with significantly lower running costs With coefficients of performance (COPs) of up to 5.0, open-‐loop ground source heat pumps than a conventional heating system. offer an environmentally friendly source of heating with significantly lower running costs than a conventional heating system.
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HEAT PUMPS
H.D. Services Ltd has a partnering agreement with the manufacturer of Soleco Open-‐Loop Ground Source Heat Pumps. (GSHP) Soleco are specialists in the design and manufacture of Open-‐Loop GSHP and are based in the UK, where they have been designing heat pumps for more than 30 years. Soleco Open-‐Loop GSHP use stored solar energy from underground water that remains at a constant year round temperature of around 11°C. The GSHP receives water from a borehole and transfers it to your heating system at temperatures up to 55°C. The Soleco Open-‐Loop GSHP is most efficient with under-‐floor heating and modern low temperature radiators. With the constant temperature of underground water, coupled with the highly efficient design, back up heating is not normally required. The Soleco Open-‐Loop GSHP has the added benefit of an independent domestic hot water circuit. Operating at the same time as the heating circuit, the Soleco Open-‐Loop GSHP can provide hot water up to 65°C. Drinking water (a potable supply) can be supplied via the water supply borehole, subject to analysis and suitable filtration. This can reduce the cost of household water bills therefore providing further financial savings. By collecting the discharge water in a buried harvesting tank on route to the soakaway, not only will it begin to regain heat immediately, the grey water can also be used for garden irrigation, car washing and other everyday activities.
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HEAT PUMPS -‐ Benefits HEAT PUMPS -‐ Benefits
There are many benefits to choosing a Soleco Open-‐Loop GSHP: There are many benefits to choosing a Soleco Open-‐Loop GSHP: FINANCIAL FINANCIAL Lower running costs – better average Eligible for Renewable Heat Incentive (RHI) Lower running costs – better average Eligible for Renewable Heat Incentive (RHI) coefficient of performance (COP) compared Scheme – financial support is available for coefficient of performance (COP) compared Scheme – financial support is available for to air source or Closed Loop heat pumps. those using renewable heat technologies. those using renewable heat technologies. to air source or Closed Loop heat pumps. For more information please visit: For more information please visit: Independent Water Supply – no mains www.ofgem.gov.uk/environmental-‐ Independent Water Supply – no mains www.ofgem.gov.uk/environmental-‐ water required, saving you money on water programmes/domestic-‐renewable-‐heat-‐ water required, saving you money on water programmes/domestic-‐renewable-‐heat-‐ charges * incentive charges * incentive GENERAL GENERAL • Reduced Carbon Footprint – taking into • Greater water efficiency – borehole • Reduced Carbon Footprint – taking into • Greater water efficiency – borehole account the CO₂ produced by electricity water can usually be filtered for account the CO₂ produced by electricity water can usually be filtered for generation, a Soleco heat pump is consumption, and discharge water can generation, a Soleco heat pump is consumption, and discharge water can responsible for less carbon dioxide that be used for grey water, to irrigate the responsible for less carbon dioxide that be used for grey water, to irrigate the even the most efficient gas condensing garden or wash the car. even the most efficient gas condensing garden or wash the car. boiler. boiler.
• High System efficiency – as underground • High System efficiency – as underground water temperatures remain constant water temperatures remain constant throughout the year. throughout the year.
• Better Annual COP – compared to either • Better Annual COP – compared to either air source or closed-‐loop heat pumps. air source or closed-‐loop heat pumps.
• Minimal installation disruption – no need • Minimal installation disruption – no need to dig up the garden to install the system, to dig up the garden to install the system, unlike a horizontal closed-‐loop system. unlike a horizontal closed-‐loop system.
• Minimal visual impact – only a manhole • Minimal visual impact – only a manhole cover can be seen externally, unlike air cover can be seen externally, unlike air source heat pumps, which have a large source heat pumps, which have a large exterior unit. exterior unit.
• MCS accredited –Soleco MCS HP0164 • MCS accredited –Soleco MCS HP0164 guarantees a high quality standard. guarantees a high quality standard. • Compatible with under floor heating and • Compatible with under floor heating and low temperature radiators. low temperature radiators.
• Less space needed – only a small plot is • Less space needed – only a small plot is needed, unlike a horizontal closed-‐loop needed, unlike a horizontal closed-‐loop system. system. • Hot water up to 65°c all year round • Hot water up to 65°c all year round
*The Water Act 2003 allows for the abstraction of water from the ground without charge, provided the daily abstraction rate is less than *The Water Act 2003 allows for the abstraction of water from the ground without charge, provided the daily abstraction rate is less than 20,000 litres. It is unlikely that a Soleco heat pump for domestic use will ever require more than 20,000 litres of water per day. 20,000 litres. It is unlikely that a Soleco heat pump for domestic use will ever require more than 20,000 litres of water per day.
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HEAT PUMPS – Technical Information HEAT PUMPS – Technical Information
SYSTEM COMPARISON SYSTEM COMPARISON Available 24 hours
No fuel storage required
No planning permission restrictions
No visual Impact
Low Independent maintenance water supply cost
SOLECO Open-Loop GSHP Closed-Loop GSHP ASHP
Solar
Biomass
ASHP—Air Source Heat Pump
GSHP—Ground Source Heat Pump
TECHNICAL DETAILS TECHNICAL DETAILS GENERAL DESCRIPTION GENERAL DESCRIPTION Model Designation Model Designation Power Supply Power Supply Denomination Denomination Intended Use of Unit Intended Use of Unit DIMENSIONS DIMENSIONS Height (mm) Height (mm) Width (mm) Width (mm) Depth (mm) Depth (mm) Weight (kg) Weight (kg) PERFORMANCE FIGURES * PERFORMANCE FIGURES * Heating Capacity (kW) Heating Capacity (kW) COP COP OPERATING RANGE OPERATING RANGE Min Operating Temperature Min Operating Temperature (Building) °C (Building) °C Max operating Temperature Max operating Temperature (Building) °C (Building) °C
SINGLE PHASE THREE PHASE Sol 12-‐1 SINGLE PHASE Sol 18-‐1 Sol 26-‐1 Sol 12-‐3 THREE PHASE Sol 18-‐3 Sol 26-‐3 Sol 12-‐1 230v/1ph/50Hz Sol 18-‐1 Sol 26-‐1 Sol 12-‐3 400v/3ph/50Hz Sol 18-‐3 Sol 26-‐3 230v/1ph/50Hz 400v/3ph/50Hz Water to Water Water to Water Domestic Heating and Hot Water Domestic Heating and Hot Water 1100 1100 625 625 725 207 245 266 725 207 245 266 207 245 266 207 245 266 12.8 18.9 26.0 12.8 18.9 26.0 12.8 18.9 26.0 12.8 18.9 26.0 3.95 4.28 4.12 3.95 4.28 4.12 3.95 4.28 4.12 3.95 4.28 4.12 30 30 55 55
*Specified at BS EN 14511:2011 conditions. Source water in at 10°C, out at 7°C. Heating water in at 30°C, out at 35°C. *Specified at BS EN 14511:2011 conditions. Source water in at 10°C, out at 7°C. Heating water in at 30°C, out at 35°C.
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H.D. SERVICES INSTALLATIONS H.D. SERVICES INSTALLATIONS
WHY CHOOSE AN H.D. SERVICES INSTALLTION? WHY CHOOSE AN H.D. SERVICES INSTALLTION? An H.D. Services Open-‐Loop GSHP installation could meet all your domestic heating An H.D. Services Open-‐Loop GSHP installation could meet all your domestic heating requirements and your hot and cold water needs at a fraction of the running cost of a requirements and your hot and cold water needs at a fraction of the running cost of a conventional gas boiler. The ‘cooled’ water can also provide a ‘grey water’ supply, ideal for conventional gas boiler. The ‘cooled’ water can also provide a ‘grey water’ supply, ideal for car washing/garden watering/feeding cattle troughs etc. car washing/garden watering/feeding cattle troughs etc.
HEATING HEATING
HOT WATER HOT WATER
DRINKING DRINKING WATER WATER
GREY WATER GREY WATER
Our service includes the supply, installation and commissioning of a complete water supply Our service includes the supply, installation and commissioning of a complete water supply and open-‐loop heat pump system with the least disruption possible. and open-‐loop heat pump system with the least disruption possible. H.D. Services are a fully accredited Microgeneration Certification Scheme (MCS) company H.D. Services are a fully accredited Microgeneration Certification Scheme (MCS) company and subscribe to the Renewable Energy Consumer Code (RECC), which means that and subscribe to the Renewable Energy Consumer Code (RECC), which means that customers can be assured of a high quality installation service by a registered installer. Use customers can be assured of a high quality installation service by a registered installer. Use of an MCS registered installer means your installation may also be eligible for financial of an MCS registered installer means your installation may also be eligible for financial support via the domestic Renewable Heat Incentive (RHI). support via the domestic Renewable Heat Incentive (RHI). H.D. Services works hard to ensure that the highest quality workmanship and service is H.D. Services works hard to ensure that the highest quality workmanship and service is delivered to our customers/clients and we take pride in our approach to our work – if we do delivered to our customers/clients and we take pride in our approach to our work – if we do not think the site is suitable for an Open Loop heat pump system, we will tell you. We do not think the site is suitable for an Open Loop heat pump system, we will tell you. We do not employ external consultants to design, agents to sell or sub-‐contractor labour to install – not employ external consultants to design, agents to sell or sub-‐contractor labour to install – all work is completed in-‐house. all work is completed in-‐house. After commissioning an installation, it is registered with the MCS. All installations are After commissioning an installation, it is registered with the MCS. All installations are provided with a 5 year workmanship warranty and the client offered an annual maintenance provided with a 5 year workmanship warranty and the client offered an annual maintenance contract to ensure the heat pump is regularly maintained and working efficiently. H.D> contract to ensure the heat pump is regularly maintained and working efficiently. H.D> Services Ltd are currently working alongside Soleco to develop a 7 year warranty for the Services Ltd are currently working alongside Soleco to develop a 7 year warranty for the Heat Pump unit in line with the term of payments available through the domestic RHI. Heat Pump unit in line with the term of payments available through the domestic RHI.
How do we install an Open-‐Loop GSHP? How do we install an Open-‐Loop GSHP? A water supply borehole would be drilled and a soakaway constructed, with the efficiency of A water supply borehole would be drilled and a soakaway constructed, with the efficiency of both being proved by pumping continuously from one to the other. Ground water at a both being proved by pumping continuously from one to the other. Ground water at a temperature of around 11°c would then be pumped into the building. Here, flow could be temperature of around 11°c would then be pumped into the building. Here, flow could be diverted to feed both a potable water supply (subject to analysis and via UV filtration) and diverted to feed both a potable water supply (subject to analysis and via UV filtration) and an open-‐loop heat pump. an open-‐loop heat pump.
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H.D. SERVICES INSTALLATIONS H.D. SERVICES INSTALLATIONS
The heat pump extracts heat from the water and uses it to raise the temperature of water
being circulated throughout the house. There are usually two separate water circuits, one The heat pump extracts heat from the water and uses it to raise the temperature of water for space heating up to 55 °C and another for domestic hot water up to 65°C. being circulated throughout the house. There are usually two separate water circuits, one for space heating up to 55 °C and another for domestic hot water up to 65°C. Cooled water at around 6°C is directed from the heat pump back into the ground, where the ground temperature warms the water back up. Cooled water at around 6°C is directed from the heat pump back into the ground, where the ground temperature warms the water back up. A harvesting tank can be installed to store the discharge from the heat pump, thereby providing a water supply for garden irrigation or other ‘grey-‐water’ use. Unlike rain water A harvesting tank can be installed to store the discharge from the heat pump, thereby harvesting tanks that are only replenished when it rains, a heat pump harvesting tank is providing a water supply for garden irrigation or other ‘grey-‐water’ use. Unlike rain water replenished whenever the heat pump is in operation. If the harvesting tank is buried in the harvesting tanks that are only replenished when it rains, a heat pump harvesting tank is ground, the water starts to reclaim heat immediately, meaning that the aquifers are less replenished whenever the heat pump is in operation. If the harvesting tank is buried in the likely to be cooled by the returning water. ground, the water starts to reclaim heat immediately, meaning that the aquifers are less likely to be cooled by the returning water.
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H.D. SERVICES APPROACH H.D. SERVICES APPROACH H.D Services Ltd. provides a one-‐stop solution throughout South East England for domestic and small commercial Open-‐loop Ground Source Heat Pump installations. H.D Services Ltd. provides a one-‐stop solution throughout South East England for domestic
and small commercial Open-‐loop Ground Source Heat Pump installations. On all our Ground Source Heat Pump installations we offer: On all our Ground Source Heat Pump installations we offer: • FREE feasibility study •• COMPLETE supply, installation and maintenance service FREE feasibility study •• COMPLETE supply, installation and maintenance service EXPERIENCED STAFF who are directly employed •• FULLY TRAINED AND ACCREDITED personnel EXPERIENCED STAFF who are directly employed •• ANNUAL servicing/maintenance programme FULLY TRAINED AND ACCREDITED personnel •• ANNUAL servicing/maintenance programme ADVICE AND SUPPORT in applying for the Renewable Heat Incentive (RHI) – which contributes to reimbursing the capital investment of qualifying installations. • ADVICE AND SUPPORT in applying for the Renewable Heat Incentive (RHI) – which
contributes to reimbursing the capital investment of qualifying installations.
H.D. Services is committed to providing the best heat pump installation service we can. Consequently, we are members of and subscribe to the following: H.D. Services is committed to providing the best heat pump installation service we can. Consequently, we are members of and subscribe to the following:
H.D. Services also has long and positive working relationships with: H.D. Services also has long and positive working relationships with:
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H.D. SERVICES TRACK RECORD & CASE STUDIES H.D. SERVICES TRACK RECORD & CASE STUDIES
Since 2010 H.D. Services have installed numerous domestic and small scale commercial
Open-‐Loop systems in various counties domestic of South East England. We have on-‐ Since 2010 heat H.D. pump Services have installed numerous and small scale commercial going projects, where the water supply borehole has been drilled and the soakaway Open-‐Loop heat pump systems in various counties of South East England. We have on-‐ constructed. Water from the supply hole has been pumped into the soakaway for a number going projects, where the water supply borehole has been drilled and the soakaway of hours to prove the efficiency of both and we are now waiting for the properties to be constructed. Water from the supply hole has been pumped into the soakaway for a number constructed before we install and commission the heat pumps. of hours to prove the efficiency of both and we are now waiting for the properties to be constructed before we install and commission the heat pumps. H.D. Services work closely with their clients and contractors, architects and consultants to determine system requirements throughout the build process. A document outlining the H.D. Services work closely with their clients and contractors, architects and consultants to plumbing and electrical requirements of the heat pump is provided. determine system requirements throughout the build process. A document outlining the plumbing and electrical requirements of the heat pump is provided. H.D. Services firmly believe in making the installation process of a Ground Source Heat Pump Services as stress-‐free possible, which is why we provide a free of consultancy all H.D. firmly as believe in making the installation process a Ground service Source to Heat customers who request a quotation from us. The knowledge and expertise held within the Pump as stress-‐free as possible, which is why we provide a free consultancy service to all company can provide the information necessary to allow a customer to make an informed customers who request a quotation from us. The knowledge and expertise held within the decision regarding the type of Sewage Treatment system or Ground Source Heat Pump they company can provide the information necessary to allow a customer to make an informed require. decision regarding the type of Sewage Treatment system or Ground Source Heat Pump they require. In 2010, H.D. Services installed a 20kW Open -‐
Loop Ground Source Heat Pump at this barn In 2010, H.D. Services installed a 20kW Open -‐ conversion for holiday lets in Buckinghamshire. Loop Ground Source Heat Pump at this barn The water is used for consumption via filtration, conversion for holiday lets in Buckinghamshire. heating and hot water via the heat pump and The water is used for consumption via filtration, irrigation/cattle troughs via a harvesting tank. heating and hot water via the heat pump and The owners happily allow us to show interested irrigation/cattle troughs via a harvesting tank. parties this site for reference. The owners happily allow us to show interested parties this site for reference. In 2012 H.D. Services completed the installation of a 26kW three-‐phase Open-‐Loop Ground In 2012 H.D. Services completed the installation Source Heat Pump at this new build property in of a 26kW three-‐phase Open-‐Loop Ground Buckinghamshire. This was part of a Source Heat Pump at this new build property in development of three properties, all of which Buckinghamshire. This was part of a have Open-‐Loop Ground Source Heating development of three properties, all of which Systems installed. A full case study follows. have Open-‐Loop Ground Source Heating Systems installed. A full case study follows.
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H.D. SERVICES TRACK RECORD & CASE STUDIES In 2012, H.D. Services installed a 26kW Open-‐ Loop Ground Source Heat Pump at this self-‐build project in Hertfordshire, having initially been invited to quote for cleaning a borehole soakaway. After visiting site we secured a contract to design and install the sewage treatment system, provide a potable water supply and install the heat pump and all associated soakaways. The client benefits from a water supply borehole that feeds the domestic supply, the heating and hot water systems and the harvesting tank. Maintenance and servicing contracts are in place and the client benefits from a single point of contact. A full case study follows.
We have ongoing domestic installations in Berkshire, Buckinghamshire, Hampshire, Hertfordshire, Oxfordshire, Sussex, and Central London. H.D. Services have also completed small commercial (non-‐domestic) installations (<45kW) at churches in Buckinghamshire and Hampshire. We have two reference sites available for viewing, please contact us for further information.
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H.D. SERVICES TRACK RECORD & CASE STUDIES H.D. SERVICES TRACK RECORD & CASE STUDIES
‘Green Apple Award’ winning development utilises water supply boreholes to provide drinking water, grey water and heating and hot water. ‘Green Apple Award’ winning development utilises water supply boreholes to provide drinking water, grey water and heating and hot water.
At a site in south Buckinghamshire, open-‐loop ground source heat pumps use water from the chalk aquifer to provide the renewable heat for heating and At a site in south Buckinghamshire, open-‐ loop ground source heat pumps use hot water systems. This water can also be used for domestic water from the chalk aquifer to provide the renewable heat for consumption heating and (subject to analyses and suitable filtration) and as a grey water supply. hot water systems. This water can also be used for domestic consumption
(subject to analyses and suitable filtration) and as a grey water supply.
In 2011 the company were approached by Acanthus Developments and asked to In 2011 the company were approached tender for the installation of three water by Acanthus Developments and asked to supply boreholes to serve each of three tender for the installation of three water prestige properties. Closed-‐loop ground supply to serve each of three source boreholes heating was being considered, prestige properties. Closed-‐loop ground however the availability of a reliable source heating was being considered, ground water supply from the chalk however the our availability of a reliable aquifer and experience in the ground water supply from the source chalk installation of open-‐loop ground aquifer and our experience in the heating systems, resulted in H.D Services installation of open-‐loop ground The Manor being contracted to install three source heat heating systems, resulted in H.D Services pumps as well as the water supply The Manor being Apple contracted three of heat boreholes. The development went on to win a Green award to in install recognition the pumps as well as the water supply Sustainable Nature of the development and the Architectural Design Excellence of the boreholes. properties. The development went on to win a Green Apple award in recognition of the Sustainable Nature of the development and the Architectural Design Excellence of the properties. Using the postcode of the site to assess the hydro-‐geology, a quotation was submitted Using the postcode of the site to assess the for the construction of both the water hydro-‐geology, a quotation supply borehole and soak was away submitted and the for the construction of both of the installation and commissioning the water heat supply borehole and soak and that the pump at each location. The away deal was installation and commissioning of the heat both the water supply borehole and pump at each location. The deal was that soakaway were constructed and water both the water supply borehole and pumped from one to the other to prove the soakaway were constructed and water worthiness of both before any payment pumped from one to the other to prove the was requested. It was several months later, worthiness of both before any payment once the construction of the properties had was requested. It was several months later, been completed that the heat pumps were Open-‐Loop installation diagram once the construction of the properties had installed and commissioned. Each been completed that the heat pumps were Open-‐Loop installation diagram installation is covered by a 5 year workmanship warranty and annual maintenance contracts installed and commissioned. Each have been offered. installation is covered by a 5 year workmanship warranty and annual maintenance contracts have been offered.
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H.D. SERVICES TRACK RECORD & CASE STUDIES
Working from building plans and SAP reports, the quote allowed for the supply and installation of Soleco three-‐phase heat pumps; two 18-‐kW and one 26-‐kW. The boreholes were drilled using a cable-‐percussion rig as it does not allow the aquifers or fissures to become polluted with sediment -‐ this method is preferred by the Environment Agency and water companies when drilling into the chalk aquifer. To protect the abstractions from derogation by a third party, borehole logs were submitted to both the British Geological Survey and Environment Agency. One advantage of the many offered by an open-‐loop ground source heat pump installation is that the discharge water can feed a harvesting tank, from where it can be pumped for garden irrigation or other ‘grey-‐water’ uses. Harvesting tanks that are connected to a rainwater system will quickly run dry during a prolonged dry spell, whereas a harvesting tank fed from a heat pump will replenish whenever the heat pump is in operation. Work commenced in early 2012 and the boreholes were drilled just after the original buildings had been demolished. The borehole pumps were left in-‐situ to provide build-‐ water until the houses had been erected, after which the heat pumps were installed and commissioned. From the experience gained on the contract, plumbing and electrical guides were designed and are handed to the client for distribution to their contractor. These have been written by a fully qualified professional and in conjunction with the heat pump manufacturer, they inform the heating distribution system installers of both the plumbing requirements and the electrical requirements of the heat pump. This ensures that while work is continuing on the build, those on site have the information to A plant room at the developed site hand regarding system requirements which provides confidence that all required connections are in the correct location, making the installation and commissioning of the heat pump a straightforward process. Work was completed in late 2012 and all three heat pump installations commissioned successfully and registered with the MCS. Although the whole job, from quotation to commissioning, took over a year we worked closely with the client and other contractors to ensure that the process was as straightforward as possible. In recognition of its Sustainable Nature and Architectural Design Excellence, the development won a Green Apple Award.
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H.D. SERVICES TRACK RECORD & CASE STUDIES H.D. SERVICES TRACK RECORD & CASE STUDIES Single installation company can design, construct and install a bespoke Sewage Single installation company can design, construct and install a bespoke Sewage Treatment Plant, Water Supply Borehole, Open-‐Loop Ground Source Heating System Treatment Plant, Water Supply Borehole, Open-‐Loop Ground Source Heating System and Surface Water Soakaways. and Surface Water Soakaways.
At a site in Hertfordshire, H.D. Services Ltd. was instructed to install a Sewage At a site in Hertfordshire, H.D. Services Ltd. was instructed to install a Sewage Treatment System, Water Supply Borehole, Open-‐Loop Ground Source Heat Pump and Treatment System, Water Supply Borehole, Open-‐Loop Ground Source Heat Pump and Surface Water Soakaways for use by a single domestic dwelling. The idea was for the Surface Water Soakaways for use by a single domestic dwelling. The idea was for the property to be as self-‐sufficient as possible. Utilising water from the chalk aquifer to property a to be water as self-‐sufficient as possible. Utilising water from chalk aquifer to provide grey supply, a potentially potable supply and the the heat source for an provide a grey water supply, a potentially potable supply and the heat source for an open-‐loop heat pump, this project offered many interesting challenges. open-‐loop heat pump, this project offered many interesting challenges.
In January 2011, H.D. Services Ltd were approached to In January 2011, H.D. Services Ltd were approached to quote for cleaning a failed soakaway at the site. quote failed soakaway site. During for the cleaning site visit a the client outlined at the the project During the site visit the the client outlined the details which comprised construction of project a new details which comprised the construction of a H.D. new domestic property. It was mentioned that domestic property. It was mentioned that H.D. Services Ltd and H.D. Drilling Ltd could provide a water Services Ltd and H.D. Drilling Ltd could provide a water supply, sewage treatment system, heating system and supply, sewage treatment system, heating system and surface water soakaways. surface water soakaways. Following this discussion H.D. Services Ltd were asked Following this discussion H.D. Services Ltd were asked to quote for the Sewage Treatment System; a to quote heat for the Sewage Treatment System; a complete pump installation (water supply complete heat pumps, pump heat installation (water tank supply borehole with pump, harvesting and soakaway); and a surface water soakaway. borehole pumps, pump, and soakaway); and a surface soakaway. Using the with postcode of heat the site we harvesting were able tank to confirm the hydro-‐geology and water a quotation was Using the postcode of the site we were able to confirm the hydro-‐geology and a quotation was submitted. submitted. All drilling works were undertaken by our sister company, H. D. Drilling Ltd, who have been members All drilling works were undertaken by our sister company, H. D. Drilling Ltd, who have been members of the Well Drillers Association since 1988. of the Well Drillers Association since 1988. Water Supply Borehole and Surface Water Soakaways: Water Supply Borehole and Surface Water Soakaways: The water supply borehole was drilled using a cable-‐percussion rig -‐ the method preferred by the The water supply borehole was drilled using a cable-‐percussion rig -‐ the method preferred by the Environment Agency and water companies when drilling into the chalk aquifer. A duty/standby dual Environment Agency and water companies when drilling into the chalk aquifer. A duty/standby dual pumping system was adopted in the borehole, meaning there is always a standby pump to act as pumping system was adopted in the borehole, meaning there is always a standby pump to act as backup should one pump fail. This method is always recommended by H.D. Services Ltd. as it means backup should one pump fail. This method is always recommended by H.D. Services Ltd. as it means that any pump issues can be addressed without disruption to the water supply and hence the heating that any pump issues can be addressed without disruption to the water supply and hence the heating system. system. Water was pumped from the supply borehole to the soakaway to prove the worthiness of both. Water was pumped from the supply borehole to the soakaway to prove worthiness of both. Borehole logs were submitted to both the British Geological Survey and the Environment Agency to Borehole logs were submitted to both the British Geological Survey and Environment Agency to protect the abstraction from derogation by a third party. protect the abstraction from derogation by a third party.
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H.D. SERVICES TRACK RECORD & CASE STUDIES H.D. SERVICES TRACK RECORD & CASE STUDIES Sewage Treatment System: Sewage Treatment System:
A bespoke HD-‐SM Sewage Treatment System (STS) was A bespoke HD-‐SM Treatment System (STS) live was designed based upon Sewage the number of people that could at designed based upon the number of people that could live at the property. The final effluent from an HD-‐SM STS is designed the property. The final effluent from an HD-‐SM STS is designed to achieve a discharge standard of 20:30:10 (BOD:SS:NH4) but to achieve a discharge can standard 20:30:10 (BOD:SS:NH increased standards be of accommodated by internal 4) but increased standards can be accommodated by internal adjustments or additional chambers. adjustments or additional chambers. Three months after this system was commissioned a courtesy Three was months after this commissioned a courtesy visit conducted to system confirm was compliance with the design visit was conducted to confirm compliance design standard. All HD-‐SM’s are covered by a with full the 24 month standard. All HD-‐SM’s are covered by a full 24 month extendible warranty and an annual service contract. Our expertise covers not only the design, supply, extendible warranty and an annual service contract. Our expertise covers not only the design, supply, installation, commissioning and servicing of sewage treatment systems but also septic tank installation installation, commissioning and servicing of sewage treatment systems but also septic tank installation and modification. and modification. Open-‐Loop Ground Source Heat Pump: Open-‐Loop Ground Source Heat Pump: Working from detailed floor plans and SAP reports, H.D. Services Ltd sized the Working from detailed floor plans and SAP reports, H.D. Services Ltd sized the heat pump and designed the water supply borehole and soakaway. The heat pump designed the water borehole supply borehole and soakaway. The efficiency of and both the water supply and soakaway was proved by efficiency of both the water supply borehole and soakaway was proved by pumping from one to the other. pumping from one to the other. Upon completion of construction of the property, the heat pump was Upon completion of construction of the property, the heat pump was installed and commissioned. All H.D. Services Ltd installations are covered by installed and commissioned. All H.D. Services Ltd installations are covered by a 5 year workmanship warranty and an annual maintenance contract is a 5 year workmanship warranty and an annual maintenance contract is offered. We assisted the client in applying for the Renewable Heat Premium offered. We assisted the client in applying for the Renewable Heat Premium Payment (RHPP) in anticipation of implementation of the Renewable Heat Payment (RHPP) in anticipation of implementation of the Renewable Heat Incentive (RHI) in Spring 2014. Incentive (RHI) in Spring 2014. Apart from the environmental and economical advantages to an Open-‐Loop Ground Source Heat Apart from the environmental and economical advantages to an Open-‐Loop Ground Source Heat Pump, an additional benefit is that the discharge water can feed a harvesting tank, from where it can Pump, an additional benefit is that the discharge water can feed a harvesting tank, from where it can be pumped for garden irrigation or other ‘grey-‐water’ uses. Unlike rainwater harvesting tanks which be pumped for garden irrigation or other ‘grey-‐water’ uses. Unlike rainwater harvesting tanks which only replenish when it rains and empty very quickly in dry weather, a harvesting tank fed from a heat only replenish when it rains and empty very quickly in dry weather, a harvesting tank fed from a heat pump will replenish whenever the heat pump is in operation, meaning that the garden can be irrigated pump will replenish whenever the heat pump is in operation, meaning that the garden can be irrigated throughout the summer regardless of hosepipe bans. It is an option which was adopted in this throughout the summer regardless of hosepipe bans. It is an option which was adopted in this installation. installation. Summary: Summary: Work commenced in June 2011 when the water supply borehole was drilled and a pump left in situ to Work commenced in June 2011 when the water supply borehole was drilled and a pump left in situ to provide the construction site with a water supply during the building process. In November 2011, we provide the construction site with a water supply during the building process. In November 2011, we returned to site to construct trenches for the pumping mains and installed the bespoke HD-‐SM Sewage returned to site to construct trenches for the pumping mains and installed the bespoke HD-‐SM Sewage Treatment System. Work was completed in June 2012 when both the Sewage Treatment System and Treatment System. Work was completed in June 2012 when both the Sewage Treatment System and the Open-‐Loop Ground Source Heat Pump system were commissioned successfully before the client the Open-‐Loop Ground Source Heat Pump system took up residence. were commissioned successfully before the client took up residence.
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KEY PERSONNEL
Mr. F. J. Harris – DIRECTOR
Since founding the company in 1984, Frank has twice served as Vice-‐Chairman of the Well Drillers Association. He is a qualified Civil Engineer and Mechanical Engineer, a Member of the Institute of Civil Engineers and a Fellow of the Geological Society.
Mrs. C. I Harris – COMPANY SECRETARY & DIRECTOR
Previously an I.T. Project Manager, Cheryl has been joint director of H.D. Services since the company was founded in 1984 and has served as company secretary since then. She takes responsibility for the financial side of the business.
Mr. P. Harris – CONTRACTS MANAGER – (GSHP)
Paul has worked for H.D. Services since 2004. Initially as a site technician and contracts engineer, he is now the Contracts Manager for the Ground Source Heat Pump department. Qualified as both a plumber and electrician, Paul is our heat pump expert and works closely with the manufacturer in furthering the development of Soleco Open Loop Heat Pumps.
Mrs. R. Taylor – GSHP BUSINESS DEVELOPMENT CO-‐ORDINATOR
Rebecca has been working for the company since 2012. She hails from a public sector background and has taken responsibility for managing the business development of the Ground Source Heat Pump division. She liaises with the industry associations (GSHPA/REA) and government offices (DECC/OFGEM) and manages the H.D. Services compliance with the Microgeneration Certification Scheme and the Renewable Energy Consumer Code. Rebecca leads our Ground Source Heat Pump marketing and publicity campaign. In 2014, H.D. Services were nominated for an Energy Efficiency and Renewables Award in the category of Heat Pump Installer of the year.
Mrs. J. Stevens – P.A. TO DIRECTOR
Jill has been with the company for more than 10 years as Frank’s P.A. She works closely with both directors and takes responsibility for the servicing schedule of our sewage treatment systems.
Mr. P. Coleman – DRILLING ADVISER
Peter has worked for the company since 1985. He and Frank worked together at Le Grand Well Drilling in the 1970’s, one of the largest Well Drilling companies in the country at that time. Peter has remained loyal to the company for over 25 years and is one of the most experienced percussion drillers in the UK. He semi-‐retired in 2008 and is now retained by H.D. Services as a drilling adviser and rig & plant maintenance engineer.
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KEY PERSONNEL
SITE PERSONNEL Our site staff are all qualified in their various fields of expertise and include the following: Name Role Training Mr. P. Harding Site Engineer / Foreman Land Driller Mr. L. Jarrold Foreman Driller Land Driller Mr. K. Spencer Foreman Driller Land Driller Mr. B. Clayden Foreman Driller Land Driller Mr. S. Warren Drilling Assistant Land Driller Mr. R. Conway Construction Site Operative Plumber & Servicing Engineer Mr. A. Collins Construction Site Operative Electrician Mr. E. Leigh Construction Site Operative Electrician
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AREAS OF OPERATION
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Denotes areas H.D. Services work in.
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CONTACT DETAILS
Services
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Service Services ltd
H.D. SERVICES LTD. Thorne Barton Farm Chesham Road Ashley Green Bucks HP5 3PQ Tel: 01494 792000 Fax: 01494 791927 E-‐mail: enquiries@thehdgroup.co.uk Web: www.hdservicesltd.co.uk For more information on heat pumps, please visit: www.hdgeothermal.co.uk H.D. DRILLING LTD. Thorne Barton Farm Chesham Road Ashley Green Bucks HP5 3PQ Tel: 01494 792000 Fax: 01494 791927 E-‐mail: enquiries@thehdgroup.co.uk Web: www.hddrillingltd.co.uk You can also find us on LinkedIn and Facebook .