Application Example Social Housing 3 Bedroom House (New Build)

*Based on energy cost of £0.10 per kWh , 0.4Kg CO2/kWh.

LED

Sol

utio

n Ap

plic

atio

n

Two main concerns with social housing are safety and energy costs: Social housing occupants are often vulnerable and in some cases disabled. RoSPA quotes 3,588 domestic injuries a year directly attributable to handling and changing light bulbs, and the vulnerable tenants in social housing are affected by a high proportion of these accidents. Since social housing is frequently occupied by full time parents, the retired and often those with higher rates of unemployment, this type of housing generally has higher daytime occupancy. Thus the electrical demand for lighting is higher than in other residential properties.

The efficacy of halogen lamps has been far superseded by both LEDs and compact fluorescent lamps (CFLs). CFLs are an older, less efficient technology that produce an inferior quality of light and emit levels of UV which cause concerns over their safety. They require proper disposal due to their toxic content (including mercury) and this may be a challenge to people without a car to drive to a disposal site. There is therefore an increased risk of improper disposal exposing them to mercury and other toxins. Where lamps are changed by an electrician, correct disposal will result in additional costs. New build social housing projects are required to meet the code for sustainable homes, much of which is based on building regulations requirements part L1. The majority of fittings are required to be dedicated low energy fittings. A standard supermarket CFL lamp could not be used in this fitting.

According to DEFRA , LED luminaires are expected improve their efficacy rapidly year on year. Projections are for 120% effi-cacy improvement by 2014. (LED lamps do not perform as well as integrated LED luminaires). Any new build project speci-fied now will therefore see substantially improved performance by the time of installation. CFLs are older technology not expected to realize any more than 10% efficacy improvements by 2014.

Ener

gy C

ost*

CO2

Emitt

ed*

replacement lamps

2 6

Zero

man hours

Hours & lamps

Mai

nten

ance

The proposed solution utilises 32 CeilingStar5 7W recessed LED downlighters. The project is compared against 42 ALC 13W CFLs, and 5 AtessaS 13W IP54 rated CFLs, which according to manufacturers data would provide equivalent illumination. The comparison CFL fitting is a dedicated low energy fitting, requiring specific dedicated lamps in order to meet the code for sustainable homes. Operating Costs • In this application where maintenance is included, there is a 84% - from £169 to £27 when maintenance costs are

included.(Compared to CFLs). • Whole house energy consumption for lighting is in this example is half that of CFLs (current performance figures)

through efficient utilisation of light and good lighting design. • By 2012 the same project will require 80% less power than today’s CFLs. Light Quality • Illumination levels are better or equal to similar halogen and CFL fittings • Illumination levels , reliability & lifetime are far superior to LED replacement lamps • Quality of light is far superior to CFLs & does not create a UV risk. Functionality improvements include: • Instant on (compatible with occupancy sensors for further energy savings) • No failed lamps—improving safety and eliminating the risk and cost of bulb changes. • Same product can be used in all areas including bathrooms (IP65). • Cool operation improves safety and reduces burns risk. • Dimmable Carbon Reduction & Environmental • The carbon footprint for lighting in this house is reduced by 60% from 298 kilos to 114 kilos per year • DEFRA reports that “Dedicated LEDs have the least environmental impacts, even compared to T5 fluorescents and

CMH” Compliance: • Fully compliant with Part L1, and meets the BRE code for sustainable homes. • Project would have 100% of lighting compliant with code for sustainable homes, gaining maximum 2 points.

Pow

er C

onsu

med

Annual Savings—against CFL (2009 performance)

Carb

on R

educ

tion Carbon Emitted

per year (Kilos) Halogen CFL PhotonStar

Kitchen 164 102 37

Living room 82 42 19

Dining Room 20 13 5

Bed 1 20 17 5

Bed 2 20 13 5

Bed 3 10 6 2

Bathroom 10 6 2

Ensuite 5 4 1

lobby 77 42 18

Stairs 41 25 9

WC 5 2 1

Carbon Saving

126

63

16

16

16

8

8

4

59

32

4

Landing 46 25 11 35

House Total 501 298 114 386

/Carbon Reduction Co

de fo

r Sus

tain

able

Hom

es

Redu

ceW

aste

Historically lighting has been the target of campaigns to reduce energy consumption. This has often been at the expense of larger environmental issues and has for example created prolems with disposal of toxic items (particularly mercury). By nature light bulbs are a consumable item and their disposal has always had some cost to both the environment and inconvenience to the consumer.

PhotonStar luminaires are one of the first technologies to think about wider environmental impact. Engineered from 85% recy-cled materials, the system results in REDUCED consumption with a long life and no lamp to change. At the end of life, the unit is easily refurbished allowing it to be REUSED with negligible envi-ronmental impact. Finally, as it is made from benign materials which may then be 100% RECYCLED, The total environmental cost is very low.•

“Dedicated LEDs have the least environmental impacts, even compared to T5 fluorescents and CMH “ - Steven Mills, DEFRA

The code for sustainable homes measures the sustainability of a new home against nine catego-ries of sustainable design, rating the 'whole home' as a complete package. The Code uses a one to six star rating system to communicate the overall sustainability performance of a new home. The Code sets minimum standards for energy and water use at each level and, within England, replaces the EcoHomes scheme, developed by the Building Research Establishment (BRE). The Code supports the government target that all new homes will be zero carbon from 2016 and the step changes in Building Regulations Part L leading to this. Level three of the code is mandatory for new social housing developments, and will become man-datory for other new developments in 2010. This project would gain the full maximum 2 points by having over 67% compliant lighting. CS5 fittings are Part L compliant and are a dedicated low energy fitting.

501kilos

299kilos

115 kilos

Halogen CFL CeilingStar5

CO2 per yearHalogen CFL CeilingStar5

The RNIB recommend avoiding the use of CFL lamps on stairs and landings. The Energy Measures Report reminds local authorities of their obligations to be mindful of climate change and fuel poverty. Selection of efficient lighting solutions will help deliver against carbon reduc-tion commitments under NI186. Strategically, it will also help address fuel poverty by paying attention to cost-effective energy efficiency measures.

/Electricity Savings

CFL 13W

Hrs/day

Hours use per year

No. of fit-tings

CFL Watts

Total Watts

Total CFL kW

hrs

Number of

PSL fittings

LED Watts

Total Watts

Tota LED kW

hrs

Kitchen 4

1,460

12

14.5

174

254 8

7.6

89 8

Living room 4

1,460

5

14.5

73

106 4

7.6

44 4

Dining Room 2

730

3

14.5

44

32 2

7.6

11 2

Bed 1 2

730

4

14.5

58

42 2

7.6

11 2

Bed 2 2

730

3

14.5

44

32 2

7.6

11 2

Bed 3 1

365

3

14.5

44

16 2

7.6

6 2

Bathroom 1

365

3

14.5

44

16 2

7.6

6 2

Ensuite 1

365

2

14.5

29

11 1

7.6

3 1

lobby 5

1,825

4

14.5

58

106 3

7.6

42 3

Stairs 4

1,460

3

14.5

44

64 2

7.6

22 2

WC 1

365

1

14.5

15

5 1

7.6

3 1

Landing 3

1,095

4

14.5

58

64 3

7.6

25 3

House Total 30

10,950

47

682

746 32

272 32

LED (CeilingStar5 NIC)

-

50

100

150

200

250

300

350

400

450

Electricity Usage (kWh per year)

Tota LED kWhrs

Total CFL kWhrs

Total Halogen kWhrs

/Projected improvem

ents

Proj

ecte

d im

prov

emen

ts

• According to the European Lamp Confederation roadmap for LED development, LED performance is projected to improve by 15% every 9 months. DEFRA research predicts a 120% efficacy improvement in LED illumination by 2014.

• Unit cost of LED luminaires is projected to improve by 10% year on year To demonstrate the possible efficacy improvements and cost reductions that may apply by the time a project specified now is due for installation, the following projections are based on the same lux levels and unit numbers for this project, with reduced power draw & unit costs based on the above forecasts.

Year Technology Total Power

(W) Illuminance efficacy

(W/m2/100lx)

Energy demand

kWh

Energy Intensity

kWh/m2/yr

2009 CFL 681 11.0 746 12.0

2009 Halogen 1120 18.1 1252 20.2

2009 LED (CS5) 256 4.1 286 4.6

2010 LED (CS5) 198 3.2 221 3.6

2011 LED (CS5) 160 2.6 178 2.9

2012 LED (CS5) 131 2.1 146 2.4

2013 LED (CS5) 105 1.7 118 1.9

2014 LED (CS5) 86 1.4 97 1.6 CO

2 Em

itted

*

CFL 2009

CS5 2012

£-

£500

£1,000

£1,500

£2,000

£2,500

£3,000

New Installation of PhotonStar CS5 TTs (all costs 2009)

New installation of CFLs (energy & replacement lamps only)

New installation of CFLs (energy, lamps and labour)

LED Luminaires at 2010 projected performance

LED Luminaires at 2012 projected performance

LED Luminaires at 2014 projected performance

Total Cost of Ownership—Future Projections

0

2

4

6

8

10

12

14

16

18

20

CFL

Halo

gen

CS5/

LED

CS5/

LED

CS5/

LED

CS5/

LED

CS5/

LED

CS5/

LED

2009 2009 2009 2010 2011 2012 2013 2014

Illuminance Efficacy (W/m2/100lx)

The CS5 LED uses dramatically less energy to illuminate to the same levels

/Cost Comparison &

light levels

1 Year operating cost comparison

CFLs PhotonStar LED

Luminaires Annual

Savings with LED

Total kWhrs 746 272 474

Total Annual energy cost @10p/kWh £ 75 £ 27 £ 47

Replacement lamps £ 32 £ - £ 32

Maintenance Labour £ 62 £ - £ 62

Total Annual Costs £ 169 £ 27 £ 142

Sum

mar

y of

Sav

ings

• Total annual operating costs reduced by 84% - from £169 to £27 when maintenance costs are included.*

• A CS5 installation in 2012 would reduce operating costs to as low as £15

• Maintenance savings over 5 years would eliminate 30 lamp changes.

* Lamp changes, 20 minutes at £29 per hour (Hourly rate monitored by whatprice.co.uk). CFL lamp cost £5 (for dedicated fittings).

6 lamp changes

Zero

Annu

al M

aint

enan

ce*

Annu

al E

nerg

y Co

st*

Kitchen

Stairs Landing

Lux levels at the work plane. All energy savings are achieved at equivalent illumination to the comparative CFL solution, and in line with levels recom-mended by CIBSE. It should be noted however that the CS5 solution emits light of a better colour quality, enabling the eld-erly and some visually impaired to see better than with CFLs at the same illumination levels. The RNIB recommend against using CFLs in stairwells and on landings.

PhotonStar LED Ltd. +44 (0)2 381 230 381 www.PhotonStarLED.com info@PhotonStarLED.com Co

ntac

t

/Products & Further Inform

ation Pr

oduc

t Foc

us

CS5 NIC Fixed LED Downlighter The innovative CeilingStar5 (CS5) range can be used in residential and commercial new builds, refurbishments or retrofits. The CeilingStar5-NIC is an energy efficient and zero maintenance light fitting which is a superior replacement for MR16 and GU10 ceiling downlighters or incandescent downlighters. It is IP65 rated, making it suitable for zones 1, 2 and 3. These light fittings make changing light bulbs a thing of the past.

The CeilingStar5 is constructed of materials that are designed for long life. It con-tains the most efficient, ultra bright, long life LEDs available today. Keeping LEDs cool is essential to efficiency and long life. The CS5 has a high performance die cast heatsink with integral spring fixings employing proprietary surface treatment technology, providing improved lifetime, efficiency and an increased ambient tem-perature operation in a durable Matt Black finish.

The CS5 offers equivalent illumination to 35W and 50W GU10 halogens, or 13W & 18W CFLs, consuming 7W and 10W a durable powder coated aluminum bezel. To create a calm relaxing environment we have WarmWhite (CT 3000K) with a colour rendering index (CRI) of 83 offering excellent quality illumination. For a pure, invigo-rating feel we have pure NeutralWhite (CCT 4000K, CRI 86)

PhotonStar have a series of case studies and product data

sheets available for download at www.photonstarled.com For more information about the code for sustainable homes visit

www.communities.gov.uk For more information about accidents involving home mainte-nance and specifically light bulbs, visit

www.rospa.com Notes from the presentation by Steven Mills, DEFRA on “Ultra-efficient lighting – domestic lighting product roadmap and outline Gov-ernment perspective” can be found on our website.

www.photonstarled.com PhotonStar is a member of the Energy Efficient Partnership for homes. Their website offers much valuable research.

www.eeph.org.uk

Further Information