V1.2 Jan 13
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Save Energy Free Energy Survey Old to New Utilize the Latest Technology Market Sectors Correct Fitting How can we Help? Part L2 Lighting Design & Advice Carbon Trust Loan Energy Saving Controls Lighting Controls 8FT Fluorescent Alternatives Comparisons Emergency Lighting Contact Us Tel: 01706 521188
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In an office building, lighting accounts for around 39% of the overall energy consumption.
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By installing lighting controls or low energy lighting such as LED ceiling tiles, this percentage can be reduced and energy savings can be made. 18%
39%
9% 19% 15%
Lighting Office Equipment Heating/ Cooling Ventilation Other
Office Energy Consumption www.DownlightsDirect.co.uk
Tel: 01706 521188
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In association with leading presence detection company Steinel, we are able to offer free energy saving surveys.
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Before you make the commitment of installing PIRs or presence detectors we can provide you with a detailed report that will tell you exactly how much you will save and which sensor to use.
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We can leave a PROLog on site that records precisely how much energy a detector will save you. It records the rooms activity and daylight levels over a 2-4 week period.
www.DownlightsDirect.co.uk
Tel: 01706 521188
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T8 & T12 fluorescent tubes
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T5 fluorescent or T8 LED tubes
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Discharge lamps such as SON (sodium) & HQI (metal halide)
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New LED-integrated downlights, ceiling tiles, low bay and high bay fittings
www.DownlightsDirect.co.uk
Tel: 01706 521188
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Most modern LED luminaires now have the light source built into the fitting, the LED and driver is integrated into the fitting.
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This design allows for brighter LED chips to be used, purpose built heat-sinks and the most energy efficient, reliable control gear.
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The LED is not replaceable, but because they have life expectancies ranging from 25,000 to 50,000 hours they shouldn’t need replacing for a very long time.
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For example the ASD LED high bay featured in this guide would last for 21 years if used for 9 hours per day, 5 days per week. No lamps would need replacing and no maintenance would be required throughout this period.
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Efficacies of 103 lumens per watt can be achieved. Almost double the requirement of Part L2.
www.DownlightsDirect.co.uk
Tel: 01706 521188
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Offices Hotels Schools and Colleges Sports Halls Retail Outlets Meeting rooms Factories and Warehouses
42W LED Ceiling Tile
T5 Batten with PIR
LED High Bay
www.DownlightsDirect.co.uk
Tel: 01706 521188
Our LIF qualified lighting team can advise you on the most suitable light fittings to use, to meet the needs of any room or environment: ►
For Schools and Colleges you may need to meet Lighting Guide 7 (LG7) design requirements or UGR19 for offices.
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Hotels and retail shops; recessed and surface modular fittings. Suspended fittings, uplighters and downlights.
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Sports halls, large retail outlets, factories and warehousing; low bays and high bays.
www.DownlightsDirect.co.uk
Tel: 01706 521188
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Our Lighting Engineers offer a complete lighting design service using their industry experience and Relux software.
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Energy surveys to establish how much energy you are using and where you could make savings.
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To offer the type of lighting that best suits your needs and budget. Should it be LED or T5 fluorescent?
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To provide if required a complete package. Survey, Design, Supply and Installation.
www.DownlightsDirect.co.uk
Tel: 01706 521188
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All Commercial Buildings and Schools are covered by Part L2 of the Building Regulations.
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All installations to Existing Buildings under 100m2 are not notify-able but should meet regulations.
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All non-dwelling Buildings should be provided with energy efficient services and controls.
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Part L2 is awarded to the building not the lamp or luminaire and account is taken into energy saving controls.
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The overall efficiency of the building should achieve lighting efficacies of at least 55 lumens per watt.
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As detailed in Parts L2A and L2B energy meters should be installed, so that at least 90% of energy can be calculated by category, e.g. lighting, heating etc.
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Tel: 01706 521188
Lighting must provide the following minimum average initial efficacy levels. 1.
General lighting in Office, Industrial and Storage Areas: 55 Lumens per circuit-watt.
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General lighting in other types of space: 55 Lumens per circuit-watt.
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Display Lighting: 22 Lumens per circuit-watt.
www.DownlightsDirect.co.uk
Tel: 01706 521188
Exemptions to Part L Building Regulations include:
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Specialist Process Lighting
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Emergency Lighting
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Specialist Lighting such as Stage Lighting and Illuminated Signs.
www.DownlightsDirect.co.uk
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Our Lighting Engineers can work from Autocad drawings and scaled plans to design your installation. We can arrange a site visit if there are no plans available. Ensure the design meets your needs, is energy efficient and make sure it complies with Part L2 of the Building Regulations. Use fittings that meet with the requirements of the government Enhanced Capital Allowance scheme. So you can claim a 100% offset against your Corporation Tax in the same year!
www.DownlightsDirect.co.uk
Tel: 01706 521188
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Want to cut energy consumption and start saving but don’t have the funds available? We can assist with an interest free carbon trust loan.
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The loan can even include installation costs! Start reducing energy costs now, don’t wait!
www.DownlightsDirect.co.uk
Tel: 01706 521188
You don’t always have to install expensive low energy lamps or luminaires to save energy. If a room is not always occupied or if it has sufficient daylight for most of the day, energy saving controls should be considered:
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Absence Detectors such as PIRs and microwave sensors make sure that light is only used when it has to be.
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Lux Sensors can be installed to dim and/or turn off lighting during periods of absence and/or sufficient daylight.
www.DownlightsDirect.co.uk
Tel: 01706 521188
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Lighting Control Systems such as the Lutron GRAFIK Eye QS adjusts lights and shades for any task or activity at the touch of a button. You’ll save energy while meeting the aesthetic, functional, and regulatory needs of any project or space.
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Groups of luminaires can be looped together in a room and controlled by their own specific sensors or timers using DALI addressable ballasts and Lutron control panels.
www.DownlightsDirect.co.uk
Tel: 01706 521188
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8FT T12 Fluorescent tubes are now banned by the EU as they are not energy efficient.
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LED technology is not always the most cost effective solution.
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We recommend installing new 2x54W T5 fluorescent fittings. They can be supplied in the same 8FT format to make installations easier and to match the existing set up.
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To save further energy they can also be supplied with built in presence detectors that dim down to 10% when an area is vacated. They won’t turn on if sufficient daylight is present.
www.DownlightsDirect.co.uk
Tel: 01706 521188
8FT 2x54W T5 Fluorescent
8FT 1x100W T12 Fluorescent ► ► ► ► ►
Total wattage including ballast: 130W Lumen output: 8,100lm Efficacy: 62 lumen per watt Life expectancy: 9,000 hours Cost per 1000 hours of operation: £15.60 (based on 0.12 per KW hour)
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Total wattage including ballast: 115W Lumen output: 8,900lm (altogether) Efficacy: 77 lumen per watt Life expectancy: 25,000 hours Cost per 1000 hours of operation: £13.80 (based on 0.12 per KW hour)
Summary Easy to retrofit, same body as a T12 8FT batten fitting. T5 is instant 100% start up, doesn’t flicker like T12. T5 reduces maintenance costs, will last almost 3 times longer. T5 increases lumen output and reduces energy costs. www.DownlightsDirect.co.uk
Tel: 01706 521188
8FT 1x100W T12 Fluorescent
8FT 2x54W T5 Fluorescent
Warehouse Room Size: 12M x 10M x 3M
16x 8FT 100W battens provide an average of 477 lux Total wattage: 2,080W (including ballasts) Annual energy costs: £586.31
12x 2x54W T5 8FT battens provide an average of 504 lux Total wattage: 1,380W (including ballasts) Annual energy costs: £388.99
Potential energy savings: £197.32 per year www.DownlightsDirect.co.uk
Energy costs based on 5 days per week 9 hours per day at £0.12 per KWH
Tel: 01706 521188
4x54W T5 Fluorescent
250W Metal Halide ► ► ► ► ► ►
Total wattage including ballast: 280W Lumen output: 21,000lm (12,810lm actual) LOR (Light Output Ratio): 61% Efficacy: 46 lumen per watt Life expectancy: 20,000 hours Cost per 1000 hours of operation: £33.60 (based on 0.12 per KW hour)
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Total wattage including ballast: 232W Lumen output: 17,800lm (15,130lm actual) LOR (Light Output Ratio): 85% Efficacy: 65 lumen per watt Life expectancy: 25,000 hours Cost per 1000 hours of operation: £24.96 (based on 0.12 per KW hour)
Summary Fast payback times can be achieved especially if they are on 24/7. T5 has much higher LOR, less light is lost in the reflector. T5 is much more efficient and brighter than the HQI. Digital dimming sensors can be added to the T5 fittings. www.DownlightsDirect.co.uk
Tel: 01706 521188
250W Metal Halide
4x54W T5 Fluorescent
Warehouse Room Size: 30M x 50M x 5M
72x Halide 250W low bays provide an average of 488 lux Total wattage: 20,160W (including ballasts) Annual energy costs: £5682.70
72x 4x54W T5 fluorescent low bays provide an average of 541 lux Total wattage: 14,976W (including ballasts) Annual energy costs: £4,221.44
Potential energy savings: £1,461.26 per year www.DownlightsDirect.co.uk
Energy costs based on 5 days per week 9 hours per day at £0.12 per KWH
Tel: 01706 521188
187W LED
400W Metal Halide ► ► ► ► ► ►
Total wattage including ballast: 460W Lumen output: 41,000lm (32,390lm actual) LOR (Light Output Ratio): 79% Efficacy: 70 lumen per watt Life expectancy: 20,000 hours Cost per 1000 hours of operation: £55.20 (based on 0.12 per KW hour)
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Total wattage including ballast: 187W Lumen output: 19,368lm (19,368 actual) LOR (Light Output Ratio): 100% Efficacy: 103 lumen per watt Life expectancy: 50,000 hours Cost per 1000 hours of operation: £22.44 (based on 0.12 per KW hour)
Summary Fast payback times can be achieved especially if they are on 24/7. LED reduces maintenance costs, will last almost 2.5 times longer. LED has 100% light output ratio, no light is lost in the reflector . Huge energy savings can be made by switching to LED. www.DownlightsDirect.co.uk
Tel: 01706 521188
187W LED
400W Metal Halide
Warehouse Room Size: 30M x 60M x 9M
42x Halide 400W high bays provide an average of 531 lux Total wattage: 19,320W (including ballasts) Annual energy costs: £5,445.92
42x 187W LED high bays provide an average of 425 lux Total wattage: 7,854W (including ballasts) Annual energy costs: £2,213.89
Potential energy savings: £3,232.03 per year www.DownlightsDirect.co.uk
Energy costs based on 5 days per week 9 hours per day at £0.12 per KWH
Tel: 01706 521188
Galaxy 1x25W LED Downlight
Galaxy 2x26W PL Downlight ► ► ► ► ► ►
Total wattage including ballast: 52W Lumen output: 3,600lm (2340lm actual) LOR (Light Output Ratio): 65% Efficacy: 45 lumen per watt Life expectancy: 20,000 hours Cost per 1000 hours of operation: £6.24 (based on 0.12 per KW hour)
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Total wattage including ballast: 25W Lumen output: 2,677lm (2195lm actual) LOR (Light Output Ratio): 82% Efficacy: 88 lumen per watt Life expectancy: 25,000 hours Cost per 1000 hours of operation: £3.00 (based on 0.12 per KW hour)
Summary Although the LED version is not quite as bright, the room would appear brighter as LED technology appears clearer to the human eye. The LED version is more energy efficient (lm/w) and would reduce energy costs. www.DownlightsDirect.co.uk
Tel: 01706 521188
1x41W LED
4x18W Fluorescent ► ► ► ► ► ►
Total wattage including ballast: 76W Lumen output: 4,400lm (2860lm actual) LOR (Light Output Ratio): 65% Efficacy: 37 lumen per watt Life expectancy: 15,000 hours Cost per 1000 hours of operation: £9.12 (based on 0.12 per KW hour)
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Total wattage including ballast: 41W Lumen output: 3,700lm (3,700lm actual) LOR (Light Output Ratio): 100% Efficacy: 90 lumen per watt Life expectancy: 30,000 hours Cost per 1000 hours of operation: £4.92 (based on 0.12 per KW hour)
Summary Fast payback times can be achieved especially if they are on 24/7. This Philips LED panel is UGR19 compliant unlike other LED panels. LED reduces maintenance costs, lasts 2 times longer. LED has much higher LOR, less light is lost in the reflector. www.DownlightsDirect.co.uk
Tel: 01706 521188
We can also offer advice and guidance on emergency lighting. How many you need, where they should go and which ones to choose. A complete range of competitively priced LED options are now available:
3W LED Bulkhead
6W LED Twin Spot
5W Emergency LED Downlight
LED Exit Sign 2.5W
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Tel: 01706 521188
Thanks for viewing our guide For more information please visit: www.DownlightsDirect.co.uk/Commercial-Lighting Or Tel: 01706 521188 Email: sales@downlightsdirect.co.uk
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