The Client
Client Consideration Budget: Good budget, the client asked for an environmentally friendly house with a very good system for long term occupancy.
Winter o 29
Comfort Requirement: The couple wants a well ventilated house in the summer, and well heating in the winter. However, they are very energy concscious and rarely use the active cooling and heating system.
Winter
John and Andy Ng are a couple that is planning to move to a site opposite the beach. The couple has no children, but does have two dogs. The dogs are relatively small and prefers to stay indoors.
Health Requirement: None in particular.
The couple commutes to work from 6am and usually returns home around 7pm. Then they both cook dinner together. On the weekend the couple prefer to stay in the house to relax. They often have guests stay, and like to throw fancy dinner parties. They both work for a solar power company.
Preparedness of occupant to operate the house: The client is fully commited to operate the house to achieve the best result.
They would like their house to feel natural with lots of daylight. They like the idea of having sea breezes coming through their house and would like a house with really good passive design strategies.
Buillding use intensity: The couple commutes to work from Monday to Friday and returns around 7pm. Usage intensity is higher on weekends. Guests stays monthly and usually for days.
The couple prefer to have a sheltered outdoor area nearby the kitchen so that they could do an outdoor dinner party. The couple also specified that they are planning to have a children. So the house needs to be designed to be as comfortable as possible for it being able to house children. The site is located on Point Cook, where the beach is on the East. The site will be close to various nature reserves, thus the couple wanted the house to be as environmentally friendly as possible.
Analysis roof line
Galah House
35.7 mm average Low Wind rose Sun path
Summer o 76
No Low
Legend
The couple cycles to work, but prefers to have an area for cars for visitors or guests.
Sewer line Water line Gas line Power line Stormwater line Gas metre Water metre Sewer pit Telecom pit Electrical pole w/street light Side entry pit Junction pit Legal Point of Discharge Tree Site Boundary Telecom Line Solar Panel
Point Cook Beach: 20 m
Summer
https://goo.gl/vEkfGP
Name: Girvan Christian Tenggono
Environmental Building Systems ABPL20036
Student Number: 917833
Assignment 1
Wendy Qin
Date: 31 Jul 2017
Scale: 1:200 @ A3
N
1. Site Analysis
Vegetation and Sunlight Penetration
Clerestory Roofing
Scale: 1:100 @ A3
Pergola
Sunlight
Vegetation Summer Sun
Summer Sun Solar Panels ensuite 38º
Winter Sun
Winter Sun
bed kitchen/dining
living
Shading Strategy
Additional Shading
The eaves are adjusted to block out direct sunlight from the summer sun (76°) while still enabling sunlight to penetrate the house during winter (29°).
Solar Panelling
pantry bed
The Ngs specifically requested for the house to be equipped with a solar panel system. The roofing angle is aoriented to accomodate solar panelling since the panels would generate maximum power if the sun ray hits the panels on a 90° angle. So, the roofing on the north part (where the sun ray will hit) is oriented on a 38° tilt. The angle is oriented according to the latitude angle of the property plus an additional 15° to maximise catchement during all season.
deck with pergola laundry
bath
bed
deck with pergola
roof line
Suspended slab concrete flooring
Opening insulation
The instalation of heavy drapes fitted with pelmet will minimise heat loss in winter nights and can be used to block excessive sunlight during summer days.
Class 2 Concrete finish Hydronic Heating Pipe
External wall
Floor Insulation Slab XPS Board Insulation
Slab Mesh Steel Flashing Protective Board Slab Mesh Vapour Barrier
Wall Sliding Door and Window External Walls Insulation
The pergola with deciduous climbers can act as an additional shading device. During Winter the plant will lose its leaves, enabling the winter sun to penetrate into the house while blocking the summer sun with its foliage. The pergola works the best on the east and west side where direct sunlight needs to be kept to a minimum yet natural sunlight is still prefferable. Wisteria is chosen because of its resilience, speedy growth and it benefits the local bee population.
Softwood Log Wall Softwood Log Wall Air Gap Moisture Barrier Cellulose Insulation Termite Barrier Timber Panel Finish
https://goo.gl/VfhnKo
Holcim Environmental Mix will be used as it includes industrial by-product (fly-ash and slag) as binder and recycled crushed concrete as aggregate. Class 2 finish will be used and a clear coating will be applied. Concrete finish is used since the couple are keeping 2 dogs. Scratch marks would appear on timber finish thus increasing the cost of maintenance.
Passive Heating System Since the beach is located on a sandy area, suspended slab system is used to support the structure. The concrete flooring on the north side of the house will act as a thermal mass as the area will get natural sunlight all year round. Hydronic heating pipe be embedded to the flooring to provide additional heating for the other zones.
Bathroom windows
Passive Cooling System
Instead of using heavy drapes, the windows on the bathrooms are equipped with plantation shutters since excessive moisture could promote fungal growth on drapes.
The thermal mass will act as a passive cooling system in the summer, where the slab will allow heat to be transmitted into the ground. However, this could only be achieved if edge insulation is installed to prevent the heat form entering the slab through thermal bridge.
Victoria has a history of softwood plantation since the 1900s, one of the biggest in Australia. Using locally sourced softwood log from sustainable plantations reduces the building’s carbon footprint. In addition, log walls can act as thermal mass; releasing heat during the night. Furthermore, log wall provides accoustic benefit. This would benefit the Ngs as suburban Melbourne is predominantly dominated by cars.
XPS Slab Edge Insulation Edge Beam Reinforcement
Concrete and Finish
https://goo.gl/PgoRdX
Internal Walls
Cellulose Insulation Plywood Panel Cellulose Insulation Air Gap Plasterboard Timber Panel Finish
Cellulose Insulation has the highest content of recycled material. When its blown onto walls it creates a seamless insulation system; thus maximising its thermal barrier properties.
Fire The site is located on an area where it has a low bushfire chance. Furthermore, cellulose insulation has a good fire resistance since it is treated with fire retardants.
https://goo.gl/Z1L7yF
Name: Girvan Christian Tenggono Student Number: 917833
Environmental Building Systems ABPL20036 Assignment 1
Wendy Qin
Date: 9 August 2017
N
2. Passive Design: Shading, Insulation and Construction Detailing
Cross Ventilation
Clerestory Roofing: Stack Ventilation
Scale: 1:100 @ A3
D 04
Solar Panels
D 03
Passive cooling system: Ventilation
ensuite
The passive cooling system works by taking an advantage of placing openings in strategic places to achieve stack ventilation and cross ventilation. The main openings enable the sea breeze (coming from North East and South East. All the rooms including the bathroom and the laundry are well ventilated so that dry air can enter and the hot and moist air can circulate out of the house in the summer. In addition to the thermal mass cooling system, the ventilation will reduce the need for cooling significantly.
38º
D 01
D 02
bed kitchen/dining
living
Stack Ventilation Stack ventilation operates on the premise that warm air rises by nature. Hence, when cold air enters the house, the warm air will rise and be expelled out of the structure; improving air flow and acts as a passive cooling system.
W 04 D 03
pantry bed
D 01
Motorised Window
deck with pergola
The motorised window can be opened in summer to ventilate. However, during winter, the windows are closed to prevent heat escaping.
laundry
bath
bed
W 03
Sealing deck with pergola
Roof sealing is essential to prevent air leakage from the house. Downlight covers are used and sealed, sarking sheets are taped so there are no seams, and ceiling and wall connection are insulated.
W 02
W 01
W 01
W 02 W 02
roof line
Window Schedule
Sliding Door and Door Schedule
Paarhammer Pty. Ltd. - Timber Tilt & Turn Windows - Child safe - FSC® (Forest Stewardship Council®) certified timbers - Triple Glazed (4/12Ar/4S500/12Ar/4S500) - Uv : 1.4 - SHGC : 0.31
Paarhammer Pty. Ltd. - Custom Glass Sliding Doors - Easy gliding - Motorised - FSC® (Forest Stewardship Council®) certified timbers - Triple Glazed (5EA/12Ar/3Clr/12Ar/5EA) - Uv : 1.2 - SHGC : 0.38
W 01 W 02 W 03
400
W 04
400 1500 400
300
2100
Paarhammer Pty. Ltd. - Custom Extrance Door - No Draft - FSC® (Forest Stewardship Council®) certified timbers
D 01
800
2000
D 02
2100
D 03
2100
800
2100
1862.5
D 04
900 2100 1500
Scale: 1:50 @ A3
Scale: 1:50 @ A3
Name: Girvan Christian Tenggono
Environmental Building Systems ABPL20036
Student Number: 917833
Assignment 1
Wendy Qin
Date: 14 August 2017
N
3. Passive Design: Roofing, Ventilation and Scheduling
Lighting Scheduling
https://goo.gl/Jz3hiA
Electrical and Telecom Philips SceneSwitch A19 LED Light Bulb - Total: 3 indoor (wall light fitting) - Power Use: 60 Watt - Intensity: Adjustable from 80 - 800 lumen
Legend
Scale: 1:100 @ A3
Electrical line (Underground) Electrical line (Above ground) Electric Meter Switchboard Ceiling light fitting Wall light fitting LED fitting Smoke and fire alarm Double power point Weatherproof double power point Single switch Multiple switch Fan with light Exhaust fan Telecom line (Underground) Telecom line (Above ground) Premises connection device Network termination device Power supply unit Tesla Powerwalls Tesla Gateway
MAS LEDbulb DT 9-60W B22 A60 CL - Total: 7 indoor, 7 outdoor - Power Use: 8.5 Watt - Intensity: 806 lumen https://goo.gl/DZJVcF G
TSL
PCD
NTD
PSU
Altitude Eco 122cm Fan with LED Light in White - Total: 3 indoor - Power Use: 17 Watt - Intensity: 1150 lumen https://goo.gl/XNgFTo
https://goo.gl/KvDeyS
MASTER LEDtube HF 1200mm SO 16.5W 840 T8 RS - Total: 1 indoor - Power Use: 16.5 Watt - Intensity: 1600 lumen
PCD NTD PSU TSL G
Energy Rating Appliances The client will use appliances with the best energy rating to reduce energy consumption. https://goo.gl/MWtPes
LED Lights LED lights are up to 80% more energy efficient than fluorescent and incandescent lights. This is because LED lamp wastes around 5% of its energy as heat, while on the other hand, traditional lights lose up to 95% of its energy as heat. Moreover, LED lights offer lower maintenance and cleaning cost.
Solar Energy Electricity A household for two will approximately consume 12.4 kWh of electricity per day. The use might vary since the couple will house guests on certain occasions, hence a bigger grid and an additional battery is required for these occasions since the couple requests for the house to rely heavily on solar energy instead of the city grid.
Lighting Power Calculation
PV Cell System 5kW System - 17 1x1.6 meter panel - Power Generated: 22 units/day - System yield: 15.7kWh to 18.5kWh (at 85% efficiency) - Payback: ~5.5 year
Electrical Scheme (not to scale)
Indoor Lighting Power Calculation - Indoor Area: 145 sqm - Total Power use: 307 Watt - Ceiling light fitting: 7 x 8.5 Watt - Wall light fitting: 3 x 60 Watt - Fan with light: 3 x 17 Watt - LED fitting: 1 x 16.5 Watt Average power use/unit area: 2.1 W/sqm
Solar Panels with Microinverter
Outdoorr Lighting Power Calculation Outdoor Area: 70 sqm - Total Power use: 59.5 Watt - Ceiling light fitting: 7 x 8.5 Watt Average power use/unit area: 0.8 W/sqm
To/From Electrical meter To Home System
This adheres to the NCC Lighting Regulations where the maximum is 5W/sqm of indoor lighting and 4W/sqm of lighting in outdoor areas (including verandas and balconies).
Name: Girvan Christian Tenggono Student Number: 917833
Environmental Building Systems ABPL20036 Assignment 1
Tesla Gateway
Wendy Qin
Tesla Powerwalls
Tesla Powerwall
Tesla Gateway
Powerwall 2 AC battery system - Efficiency: 90% round-trip - Power: 7kW peak/ 5kW continuous - Uses an internal inverter to convert DC energy to AC energy, lowering cost and complexity - 7+ days Continuous power during an outage - Connected to the Tesla app
Energy management and monitoring functions for the Powerwall system
Switchboard
Date: 25 August 2017
N
4. Services Plan: Electrical, Lighting, Communication
Water System Plan Scale: 1:100 @ A3
Gas System Gas Free House
Legend
Gas service in the household is generally used for stovetops, ovens, hot water and the heating system. All of the appliances in the house rely on solar electricity and solar water heating to reduce carbon footprint. Hence, it is decided that gas connection is not required to be included in the house. However, the connection is still made from the gas line to the meter for further development by the current house or future properties on the site.
Mains Water Connection Rain and Greywater Connection Filtered Water Connection Heated Water Connection Stormwater Pipes Rain and Greywater System UV Filter and Pump Energy Bank Heat Pump
Hot Water System Appliances Scheduling T-CP270AB 270 LITRE COMPACT SYSTEM - High efficiency Heat Pump with an integral hot water storage. - Water capacity: 270L - Noise: 52dB(A)
From Water Meter HP
EB
F&P
https://goo.gl/piWups
T-U5812AB 12 TUBE SOLAR COLLECTOR - Water temperature raches 55°- 90°C (more than household hot water safety temperature limit, 49°C) - Up to 30% more efficient than traditional collectors - Complies with AS2712:2009 https://goo.gl/Q6eygK
https://goo.gl/L6Tbd7
T-HP72AB 7.6KW HOT WATER HEAT PUMP - Heat Pumps utilise the heat energy in the air to heat water - 4 Times more energy efficient than electric or gas heaters - Default water temp: 55°C - Max water temp: 60°C
To Stormwater Pipes
Water System Solar Water System The water system is run by using solar water system that integrates the rainwater system into it (which will be mentioned later). The system would work by inserting rainwater that has been sterilised into the “T-T420A-B/S 420 LITRE ENERGY BANK” which will carry the unheated water into the solar collectors “ T-U5812AB” (which will be put on 50° to maximise sun in winter where hot water is needed more). Then the heated water would be brought back into the energy bank where the heated water would be stored and distributed to the appliances when needed. The hydronic heating can also be attached to the bank. If the solar collector do fail to collect the amount of water needed, and the energy bank did not store enough hot water, the “ T-HP72AB 7.6KW HOT WATER HEAT PUMP” will generate heat but at the cost of electricity (which will be provided by the PV cells. Diagram showing the Energy Heat Pump and Energy Bank together for plumbing and Hydronic applications.
Water System Schematic Diagram (not to scale)
Solar Collectors
Energy Bank Rainwater System Hot Water to Appliances Heat Pump Hydronic Heating
Overflow to Stormwater https://goo.gl/D87nAM
Name: Girvan Christian Tenggono
Environmental Building Systems ABPL20036
Student Number: 917833
Assignment 1
Wendy Qin
Date: 30 August 2017
N
5. Water and Gas System
F&P EB HP
Water Recycling and Drainage Plan Scale: 1:100 @ A3
Rainwater Harvesting and Water Recycling System
To Lawn Sprinklers
Why Rainwater
Legend
Melbourne’s average monthly rain is relatively constant with the lowest being on January and February (47 -48 mm) and the highest on October (66 mm). Hence, due to the client’s commitment to being environmentally friendly, the house has an intensive water recycling system built into it.
Gutters Rainwater Collection Pipes Greywater Collection Greywater Output Sewage Pipes Stormwater Pipes Rainwater Storage Surge Tank Reed Bed Greywater Storage UV Filter and Pump Energy Bank Heat Pump Pump Downpipes Drain Waste Vent
Rainwater System Process The Rainwater will be collected from all of the downpipes using the wet system. The pipes are equipped with Leaf shedding rainheads to keep leaves to get into the downpipes and a 100L flush diverter (50L/100 sqm) to stop initial runoff after a dry period entering the rainwater storage tank. Insect guard would be put on the inlet and the outlet of the tank, preventing contamination. The water would be filtered and pumped either straight into the appliances or the hot water system. With minimal water use (300L per day) 2 of the underground tank would be sufficient (13.000L) since water would be available for 355 days annually. Backup from the main water connection is used in case of water shortage and overflow would be diverted into the stormwater pipes.
RW ST RB GW F&P EB HP P
From Water Meter HP
EB
F&P RW
Greywater Recycling process
ST
The Greywater from showers, baths, hand basins, laundry tubs and washing machines are collected into the surge tank by pipes (at 1.65% incline) containing coarse aggregates. Then it flows to the tank with filter and reed bed before entering the greywater storage which is flushed every 24 hours. The water collected in the storage would be pumped later on to toilets in the household. The remaining water will be carried on to the sprinklers to water the lawn and the garden; however, on cases where the greywater still overflows the water will be flushed into the sewage pipes. If water shortage does happen, water from the rainwater storage will be used as a backup.
RB
GW
P
To Stormwater Pipes
Water Recycling and Drainage System Water System Schematic Diagram (not to scale) Rainwater Storage Main Water (Backup)
UV filter and pump
Hotwater System
Rainwater Carat S underground tank - 6.500L Capacity - Stackable - Supports max weight of 12 tonnes https://goo.gl/FjUrqC
DAVEY PUMPING SYSTEMS WITH WATER TREATMENT - Fixed or variable speed pumps - Industrial Filtration - Commercial UV systems
(Backup)
Greywater
Surge tank
FIlter and Reed Bed
Showers, baths, handbasins, laundry tubs and washing machines. Lawn and Greywater Garden Pump Storage
Kitchen Sink
Sewage Pipes
Toilet
Stormwater Pipes
https://goo.gl/rmWQap
Name: Girvan Christian Tenggono
Environmental Building Systems ABPL20036
Student Number: 917833
Assignment 1
Wendy Qin
Date: 31 August 2017
N
6. Water Recycling and Drainage
Heating
Heating Plan Scale: 1:100 @ A3
General Climate
Legend
The site which the house is located on falls under Zone 6 under the Building Code of Australia (BCA), mild temperate area. The climate is stated to be able to present cost-effective opportunity to achieve carbon zero or positive outcome if the passive design is well considered to minimise heating and cooling energy use. The house does already present adequate passive heating design, nevertheless, active heating is implemented to counter extreme weather, increasing resilience.
Heated Hydronic Line Unheated Hydronic Line UV Filter and Pump Energy Bank Heat Pump In-Slab Hydronic Zone Hydronic Panels Thermostat
F&P EB HP
The Client The clients are comfortable with wearing warm clothing indoors to counter the cold weather. In addition, the dogs that the Ngs keep will help warm them up. However, as mentioned before in addition to passive design active heating is implemented.
Passive Thermal Properties - Insulation on Roofing, Walls and Slab, and double glazed windows to prevent heat loss - Edge insulations that prevent thermal bridge that causes heat to escape the house - The large opening on the North side to let direct sunlight heat up the thermal mass slab and the timber log wall. - The openings are insulated by heavy drapes fitted with pelmets.
HP
EB
F&P
Active Heating System Hydronic Panels
In-Slab Hydronic Heating
For the bedrooms, hydronic panels are employed instead of in-slab hydronic pipes. This is due to the fact that beds can reduce the effectiveness of the heating since the empty area underneath beds creates a buffer from the slab and the user while hydronic panels provide radiant and convected heat. Also, the heating is mostly needed only during nighttime and over a small area, so in slab, heating would not be cost effective.
The in-slab hydronic heating is used to complement the floor slab thermal mass. The system allows zoning so maximum efficiency can be achieved where only the desired area is heated. The system is connected into the “T-T420A-B/S 420 LITRE ENERGY BANK” which is a part of the hot water system (mentioned on page 5). Thus, providing a cleaner energy source (solar) rather than relying on gas, since generally, heating is a major energy contributor in households (40%).
The panels are all located next to the window to prevent the creation of air pockets where the hot and cold air is not distributed properly. Insulation of the pipe is crucial so that there is no energy loss from the piping system.
The closed-loop system is applied in the living and kitchen area where the usage intensity is the highest and has the biggest area. In-slab heating is very effective in heating up a large area simultaneously. The slab could also heat the room after the system is turned off since it collects the heat from the system. The pipes are arranged in a way that the heated and unheated watered pipe alternates. This ensures that the floor is heated evenly. The water that comes from the energy bank is separated from the water for household use since water in the in-slab system should reach 60°- 70°C while the maximum safe water heat for household use is 49°C.
Name: Girvan Christian Tenggono
Environmental Building Systems ABPL20036
Student Number: 917833
Assignment 1
Wendy Qin
https://goo.gl/wxUept
Date: 31 August 2017
To control the hydronic panel and the in-slab hydronic heating, a thermostat is put in the living room. It is off by the default, however, the client is free to program the thermostat according to the season or simply turn on the system manually if needed.
N
7. Heating
Cooling Plan Scale: 1:100 @ A3
Cooling General Climate
Legend
The site which the house is located on falls under Zone 6 under the Building Code of Australia (BCA), mild temperate area. As for heating, the house’s cooling should be adequate through passive design. However, ceiling fans are put in the living room and the bedroom to increase comfort during extreme heat in the summertime.
Ceiling Fan Multiple Switch
The Client The clients are happy with getting enough sea breeze during the day in the summer. So as mentioned on page 3, cross ventilation is employed to let the air circulate through the house during hot days.
Passive Thermal Properties - Insulation on Roofing, Walls and Slab, and double glazing to reduce heat gain in summer. - Large openings on the north are shaded by pergola and creeper plants to prevent direct sunlight entering the house. - Cross and stack ventilation are used to circulate the air in the room - Thermal mass is used to keep the house cool during summer - East and West shaded glass are well shaded
Active Cooling System Ceiling Fan
Portable Evaporative Cooler
According to the BCA, ceiling fans are essential as a part of the cooling system in all living and sleeping spaces. The installed fans are reversible, meaning that the fan could also serve heating purposes as shown on the ceiling fan diagram.
If the passive design strategies and the ceiling fans are already deployed, however, the clients still need an alternative for cooling, portable evaporative coolers can be used to add further cooling option.
Evaporative Cooler Diagram
Cold Air
The device would be stored and only be used as a last resort. It works by sucking dry air, thus providing cold air. The portable cooler complements the cross and stack ventilation, improving air circulation.
Ceiling Fan Diagram
Humid Pad Louvres
Forward
Reverse
- Cooling effect in Summer - Force air in the room on user giving a wind chill effect, making the users feel cooler
- Warming effect in Winter - Draw air up from the room, removing the wind chill effect by making air comes down from the side of the room
Name: Girvan Christian Tenggono
Environmental Building Systems ABPL20036
Student Number: 917833
Assignment 1
T-CP270AB 270 LITRE COMPACT SYSTEM - Electricity as little as a lightbulb (120 Volts) - Noise: 66 dB - 6.6 litre water box Warm Air Water Box
https://goo.gl/p3Gb5p
Wendy Qin
Date: 31 August 2017
N
8. Cooling
Red pen Exercise Plan Scale: 1:100 @ A3
Resilience Against: Power Outage
Cooking?
Client’s Concern The Ngs have been watching too many disaster movies and they are worried that the electricity grid may fail in the future due to heatwaves, peak electricity loads during heatwaves, fires destroying power lines, wars and terrorism. They would like for you to come up with ways in which their house could function off-grid with little energy usage.
Power Outage in (Greater) Melbourne According to the State Government of Victoria, power outage in Victoria does happen, but mostly not due to the shortage of supply. Power outage happens due to severe weather (lightning, flood, heatwaves, bushfires, high winds or trees damaging powerlines), animals, car accidents or underground construction.
ity?
iv Connect
Analysis Hence, it would be beneficial for the clients to reduce reliance on the grid to avoid a power outage. Provided on the Red pen Exercise plan the client’s main concern regarding power outage.
fresh
Off-Grid System: PV Cell System Currently, the Ngs’ house can function off the grid due to their commitment on maximising the use of PV cells; panels are put on the roof according to the couple’s need. However, a bigger system could be installed where the roof area will be used to its full extent, increasing electricity yield; or adding more PV cells on the ground level since there is no case of overshadowing. Another Tesla Powerwall Battery should also be added to store the additional electricity yield, acting as a reserve if prolonged power outage does happen and the main grid could not provide electricity backup.
Current PV Cell System
Hypothetical PV Cell System
5kW System - 17 1x1.6 meter panel - Power Generated: 22 units/day - System yield: 15.7kWh to 18.5kWh (at 85% efficiency) - Payback: ~5.5 year
15kW System - 50 1x1.6 meter panel - Power Generated: 60 units/day - System yield: 47 to 54kWh (at 85% efficiency) - Payback: ~5.9 year (70% self consumption)
Off-Grid System Extension If the Ngs wants to increase the renewable energy yield (maybe generating energy for the surrounding neighbours, creating a resilient community) the couple could install wind turbines as the site is located on the edge of the point cook beach where annually windrose is high. Horizontal and Vertical turbine might add 1 to 5 kW of electricity yield per turbine.
ing?
cool / g n i t a e H
water
?
Rainwater Harvesting and Water Recycling System
Education on using the built house
Answering the Red pen Exercise
The house could also operate off the main water supply since the house utilises a rainwater harvesting and water recycling system. The house could also save more water and energy if the couple: - install water-saving fixtures such as: faucet aerator, low-flow toilet, efficient shower head and water sense rated dishwasher and washing machine. - cut shower time short. - shower the dogs outdoors (to let the greywater water the yard). - fix leaks as soon as possible. - turn off faucets when shaving, washing hands, and brushing teeth. - run laundry only when its full load. - use cold water for laundry.
To maximise the use of the Passive design strategy, PV Cell, Rainwater Harvesting and Water Recycling Systems during a power outage, having knowledge in how to operate and use the already built system is crucial to reduce energy usage. Fundamental knowledge would be: - Close the curtains on winter nights to reduce heat loss. - Purchase powerpoint plug to prevent heat leaking from the room. - Close the windows and sliding door properly and learn how to operate the tilt and turn system. This is necessary to prevent draft or creating a thermal bridge. - Learn how to operate the fans properly, to achieve the cooling effect in Summer and warming effect in Winter. - Turn-off unused electrical appliances. - Understand that psychological perception of warmth and coldness can cause the decision to turn the thermostat to the temperature outside of normal comfort range. - Resort to warm clothes, duvet and hot water bag before turning on the active heating system, since heating consumes 40% of the average household electricity. - Shade east and west facing rooms in Summer since these areas are prone to overheating. - Ventilate the house by opening the window in the Summer. - Use environmentally friendly cleaning products so the greywater would not kill the garden and lawn.
The issues raised by the Ng’s are very common problems that arise if a prolonged electricity outage happens. However, since the couple has already invested in creating a house that can function without main water connection or grid electricity the couple will be well off during power outage. - Connectivity to the outside can be resolved by buying electrical radio - Freshwater is accumulated from the rainwater system - Cooking can be done since the cooking appliances rely on electricity rather than gas - Heating and cooling are achievable through passive design without the need for electricity.
In addition, to further save water (for extreme conditions such as drought) the couple might consider: - Using native plants or Succulents and cactus as they require little watering - allow the lawn to die to preserve trees and shrubs instead. - increasing the rainwater catchment area by extending the roof area or shade structure and adding additional tanks. However, this option would not be that viable since it would rather be impractical.
Name: Girvan Christian Tenggono
Environmental Building Systems ABPL20036
Student Number: 917833
Assignment 1
Wendy Qin
Date: 31 August 2017
However, if an extremely prolonged power outage does happen (due to war or terrorism), the couple might want to consider: - installing a blackwater recycling system for planting edible plants. Considering the size of the unused area in the couple’s property they might be able to start a community garden to push resilience further. - Adding more PV Cells, wind turbines and batteries to generate and store more electricity as mentioned before. - Resort to natural lighting and candles during the night. - installing green roofs to counter heatwaves as it provides an additional insulation layer. This, however, requires careful planning and design.
N
9. Design for Resilience
Project Information Mode Climate Site Exposure Client Name Rated Address Accredited Rater Date
Walls Type
New Home
Insulation
Area (m2)
21 Melbourne RO
Log Wall 250mm Softwood
0
129.1
Suburban
Plywood - Batten btw Frame and Cladding
4
109.7
The Ngs -
Floors
Girvan C Tenggono
Type
07/08/2018
Insulation
SuspSlab
Energy Usage Mode
Energy (MJ/m2)
Total Heating Cooling
Area (m2)
Ventilation
3
encl
105.5
Roof/Ceiling
42.5 32.5
Type
Insulation
HiVent:Attic-Highly Vented
9
Area (m2)
1
105.5
Areas Area Net Conditioned Floor Area (NCFA) Unconditioned Room Area Garage Area
Windows
Size (m2)
Type
94.8 10.8 0
Window Directions
Kitchen/Dining Living Bedroom 1 Bedroom 2 Bedroom 3 WC Laundry Ensuite Bathroom Hallway
Area (m2)
Heating (MJ/m2)
Total Heating (MJ)
Cooling (MJ/m2)
Total Cooling (MJ)
39.4
24.2
955.4
21.9
864.5
39.4
24.2
955.4
21.9
864.5
10.1
46.6
468.5
4.3
43.7
10.7
61.5
660.0
0
0
13.9
29.9
414.1
9.3
128.9
52.3
241.5
0.0
0.0
Direction Area (m2) Direction N E 15.8
Area (m2) 8
SHGC
2.00
TIM-006-03 W Timber B DG Argon Fill High Solar Gain low-E -Clear
Zones Zone
U-value 0.31
Direction S
34.08
Area (m2) 2.1
Direction W
Type
Location
Quantity
Sealed
3.4 5.3 16.1
Student Name: Girvan C Tenggono
Student Number: 917833
Name: Girvan Christian Tenggono
Environmental Building Systems ABPL20036
Student Number: 917833
Assignment 1
Wendy Qin
Area (m2) 8.2
Roof/Ceiling Penetration
2.1 4.6
Area (m2)
Final Star Rating: 8.4 Date: 31 August 2017
N
10. Energy Assessment
Area (m2)