Cheap Lamps May Not Be So Cheap


GU10 Halogen

The best energy saving measure is to switch it off. However we need lighting for modern living and safety reasons.

Commercial electricity costs between 8 pence and 11 pence per kilowatt hour [kWh]

Domestic electricity costs between 11 pence and 16 pence per kilowatt hour [kWh]

GU10 CFL

Looking at GU10 lamps the following cost comparisons can be made

Lamp   Purchase Cost Cost Wattage Cost per 100   hours
GU10 Halogen £0.70 50 £6.50
GU10 Compact   Flourescent £6.50 11 £1.43
GU 10 LED £12.00 7 £0.91
       
Lamp Running [cost per year] 3 hours per day 6 hours per day 9 hours per day
GU10 Halogen £7.12 £14.24 £21.35
GU10 Compact   Flourescent £1.57 £3.13 £4.70
GU 10 LED £1.00 £1.99 £2.99

GU10 lamps are very popular and can be a costly purchase if the running time in use is not taken into account.

GU10 LED

Looking at the extreme case of nine hours use per day:

The GU10 halogen lamp costs 70 pence to purchase but £21.35 to run. Total annual cost £22.05

The GU10 LED costs £12.00 to purchase but just £2.99 to run. Total annual cost £14.99

The increased purchase cost per lamp gives a year end saving of £7.00 per lamp. After year 1 the saving increases to over £18.00 per year, per lamp as the purchase cost has been covered in year one.

There are many examples of inefficient lighting in daily use. Please contact us on 01782 504503 or 07901 380746 to discuss your requirements. You can also e-mail ecologic@gmx.co.uk to ask any questions or arrange a free survey of your property.

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What is Colour Rendering?


Colour rendering index [CRI] is the standard scale to compare different light sources. It is derived from the visible light spectrum as detailed below.

The  light spectrum visible by the human eye  is less than 1.5% of the entire electromagnetic spectrum.

The following picture shows the  electromagnetic spectrum. Note the small section visible by the human eye.

Frequency Wavelength
violet 668–789   THz 380–450   nm
blue 631–668   THz 450–475   nm
cyan 606–630   THz 476–495   nm
green 526–606   THz 495–570   nm
yellow 508–526   THz 570–590   nm
orange 484–508   THz 590–620   nm
red 400–484   THz 620–750   nm

The color temperature of the electromagnetic radiation emitted from an incandescent light bulb‘s light is over 97% thermal and less than 3% light, so its color temperature is essentially the temperature of the filament. Therefore incandescent lamps have a CRI of 100.

Many other light sources, such as fluorescent lamps, emit light primarily by processes other than thermal radiation. These sources are assigned what is known as a correlated colour temperature (CCT). CCT is the color temperature which to human colour perception most closely matches the light from the lamp.

The table below details a range of light sources, both natural and man-made. The table details Correlated Colour Temperature  CCT values in Kelvin [K] and Colour Rendering Index [CRI] values.

Light source
CRI CCT (K)
Low-pressure sodium (LPS/SOX) 5 1800
Clear mercury-vapor 17 6410
High-pressure sodium (HPS/SON) 25 2100
Coated mercury-vapor 49 3600
Halophosphate warm-white fluorescent 51 2940
Fluorescent light tubes or Cool White/Daylight CFL 62 5000
Halophosphate cool-white fluorescent 64 4230
Tri-phosphor warm-white fluorescent 73 2940
Halophosphate cool-daylight fluorescent 76 6430
“White”   SON 82 2700
Soft White compact fluorescent light bulb 82 3000
Quartz metal halide 85 4200
Tri-phosphor cool-white fluorescent 89 4080
Ceramic metal halide 96 5400
Candle flame, sunset/sunrise 100 1850
Incandescent light bulb 100 3000
Incandescent/halogen bulb 100 3200
Vertical daylight, electronic flash 100 5700

The picture below shows what colour temperature looks like

Lighting design is a complex subject and there are many Industry experts to help guide you through the process.

The chart below gives details of colour temperature and typical applicable locations

I work with MHA Lighting  http://www.mhalighting.co.uk/  who are passionate about lighting and go the extra mile to deliver quality products as standard.

There is much more to lighting than how many Watts the lamp is. We are here to help you make the right choices for your needs. We will work through your requirements and ensure you have the best possible lighting available.

Contact us on 01782504503 or 07901380746 to discuss your requirements. You can also e-mail ecologic@gmx.co.uk to arrange a free lighting survey or to answer any questions you may have.

What is a Lumen?


What is a Lumen?

The quantity of light reaching a surface is usually the main consideration in designing a lighting system.

This quantity of light is specified by illuminance measured in lux, and as this level varies across the work surface ‘working plane’, an average figure [lumen] is used.

CIBSE Lighting Guides give values of illuminance that are suitable for various areas.

Location

Illuminance (lux)

Limiting Glare rating

Minimum colour rendering (Ra)

Restaurant, function room.

80

Auditoria

100

General lighting healthcare

100

19

80

Toilets domestic

100

80

Lounge domestic

100   – 300

19

80

Kitchens domestic

150   – 300

80

Bathrooms domestic

150

80

Archives store   office

200

25

80

Foyers

200

Self service   restaurant

200

22

80

Classrooms

300

19

80

Computer practice   rooms

300

19

80

Filing, copying etc.

300

19

80

Practice rooms,   dressing rooms

300

22

80

Reading lighting   healthcare

300

19

80

Reception desk

300

22

80

Sales area

300

22

80

Simple examinations

300

19

80

CAD work stations

500

19

80

Conference and   meeting rooms

500

19

80

Conference rooms

500

19

80

General office   lighting

500

19

80

Kitchen

500

22

80

Till area

500

19

80

Wrapper table

500

19

80

Technical drawing

750

16

80

Technical drawing   room

750

16

80

Examination and   treatment

1000

19

80

Lighting Levels are detailed  in the table below. Illuminance values are shown in Lux, together with typical locations.

Illuminance (lux)

Activity

Area

100

Casual seeing

Corridors, changing rooms, stores

150

Some perception of detail

Loading bays, switch rooms, plant rooms

200

Continuously occupied

Foyers, entrance halls, dining rooms

300

Visual tasks moderately easy

Libraries, sports halls, lecture theatres.

500

Visual tasks moderately difficult

General offices, kitchens, laboratories, retail   shops.

750

Visual tasks difficult

Drawing offices, meat inspection, chain stores.

1000

Visual tasks very difficult

General inspection work.

1500

Visual tasks extremely difficult

Fine work and inspection, precision assembly.

2000

Visual tasks exceptionally difficult

Assembly of minute items, finished fabric   inspection.

The lumen method is used to determine the number of lamps that should be installed for a given area or room.

Calculating for the Lumen Method

The lumen method is used if the light fittings (luminaires) are to be mounted in a regular pattern.

The luminous flux output (lumens) of each lamp needs to be known as well as details of the luminaires and the room surfaces [colours and textures of surface finishes].

Usually the illuminanceis already specified e.g. kitchen 300 lux,  office 500 lux etc.

The number of lamps is given by the formula:

where,

N    =              number of lamps required.

E    =              illuminance level required (lux)

A    =              area at working plane height (m2)

F    =              average luminous flux from each lamp (lm)

UF=               utilisation factor, an allowance for the light distribution of the luminaire and the room surfaces.

MF=              maintenance factor, an allowance for reduced light output because of deterioration and dirt.

Example

A production area in a factory measures 24 metres x 60 metres.

Find the number of lamps required if each lamp has a Lighting Design Lumen (LDL) output of 18,000 lumens.

The illumination required for the factory area is 200 lux.

Utilisation factor = 0.4

Lamp Maintenance Factor = 0.75

N             =              ( 200 lux x 24m x 60m ) / ( 18,000 lumens x 0.4 x 0.75 )

N             =              53.33

N             =              54 lamps.

Correct lighting design can have a huge effect on how a space is illuminated and the ambiance created. We can work with you by first taking accurate lux readings of your present installation. We will then identify what light levels you want and see what can be done to cost effectively meet your requirements.

Contact us on 01782504503 or 07901380746 to  discuss your requirements. You can also e-mail ecologic@gmx.co.uk to arrange a meeting or ask any questions you may have about lighting and general energy efficiency issues.

LEDs Beware of Pale Imitations


LED lighting is relatively new technology. I have tried many products and can confirm price does not always guarantee quality!

Last week I spent a day at MHA lighting, UK based LED lighting design and manufacturing Company based in Atherton, near Wigan.

I was really pleased to see the passion for excellence in all products supplied. The design and manufacturing process is all undertaken on one site. Every stage of production is followed by testing. MHA can provide a 5 year guarantee because every product has been tested at least 6 times before it’s dispatched from the factory. Excellent attention to detail, a real confidence boost for the installer and end user Customer.

MHA have experience in a wide range of applications from ships to deserts, they produce electronic products to withstand the most rugged environments. All products have a ambient temperature range from -35 C to + 55 C.

A 5 Year guarantee for all products is provided because MHA lighting understand the technology and design products to last.

Check out the MHA lighting website for details of Customer testimonials. http://www.mhalighting.co.uk/

Fresh produce looks better with good quality lighting

I am offering the MHA lighting range for all relevent applications in leisure, retail and healthcare applications. I will visit your site, undertake a free of charge detailed lighting survey and talk with you to establish your needs and see what can be done to save you money.

Product range displayed to best advantage with excellent lighting

Correctly designed and installed lighting can improve product shelf life, increase Customer confidence and drive up spending levels for your business.

We can look at a range of financing options so you can have improved lighting without increasing bottom line spending.

The following tables and photos give further details of the MHA Lighting range. MHA Lighting also offer bespoke design and production services. This is excellent for the retrofit applications as it may be possible to reuse existing enclosures to hold the LED lighting modules.

Please call 07901 380746 or 01782 504503 to discuss your requirements and to arrange a free lighting survey. You can also e-mail me at ecologic@gmx.co.uk.

MHA Lighting Product Range

QuarterLite – External

MHA Lighting’s award-winning QuarterLite combines high quality, uniformly distributed light with energy savings of up to 80%.

The entire range delivers clean, bright light to create the highest levels of illumination whilst slashing energy bills and CO2 emissions.

Our patented QuarterLite technology provides a light output of more than 400 Lumens using just 4 watts and has been designed as a direct replacement for fluorescent tubes and inferior LEDs.

The QuarterLite is the perfect solution for lighting internal and external advertising signs, illuminated company names and large format billboards.

All QuarterLites are supplied with a five year guarantee.

The    benefits:

Efficiency

Typically uses 80% less energy than conventional   back-lit solutions.

Zero Maintenance

Reducing costs and disruption of routine   maintenance – often at height.

Lifespan

A useful lifetime of 60,000 hours.

Light Distribution

Uniformly distributed glare-free light which   achieves LG Standards Lux Levels.

Directionality

Ghost-bands and flicker is eliminated.

Shock resistant

QuarterLites do not break or explode like   traditional fittings.

C Lite – External

MHA Lighting C70

MHA Lighting’s award-winning C Lite combines high quality, uniformly distributed light with energy savings of up to 80%.

MHA Lighting C100

The entire range delivers clean, bright light to create the highest levels of illumination whilst slashing energy bills and CO2 emissions.

MHA Lighting C140

The C Lite is the perfect solution for internal and external applications of heights ranging between 4 and 9 metres. It is a recessed behind a fascia of polycarbonate, acrylic or toughened glass and is easy to clean and maintenance free during its 60,000 hour lifespan. It is available in a range of wattage and sizes depending on the application.

External applications:
Tunnels
Canopies
Roads
Floodlighting

Internal applications:
Manufacturing
Warehouses
Retail sheds
Shopping malls
Concourses.

The light is delivered in 5500 Kelvin, 65CRI for precision working but can be delivered in a variety of colours to suit your requirements. The fittings also include intelligent controls such as ambient sensor or dimmer to further maximise energy savings.

The C Lite is designed using MHA Lighting’s patented LED technology and complies with all British Standards. The range is EU Energy rated A and achieves LG standard LUX levels. It typically replaces 150-400 watts low and high bay fittings

The    benefits:

Efficiency

Can achieve up to 80% energy savings compared to   traditional fittings

Zero Maintenance

Reducing costs and disruption of routine   maintenance

Lifespan

A useful lifetime of 60,000 hours.

Light Distribution

Uniformly distributed glare-free light which   achieves LG Standards Lux Levels

Reliability

C Lites are robust and do not break or explode   like traditional fittings

PSU Specifications

90-277 Volts AC DALI / DMX options available

No Heat

Perfect for air-conditioned environments or open   refrigerators

Specifications:

LED Type

Philips Rebel (ES)

Colour Rendering

65 CRI

Colour Temperature

Other colour temperatures are available upon   request

Product Type

Available with a glass, acrylic or polycarbonate   cover

Warranty

Five to seven years depending upon operating   hours

Housing Type

Surface mounted, chain suspended, recessed or   trunking mounted

Emergency Options

Integrated emergency options available in either   standard battery pack or 110 volts AC

Output Content

450mA

Operating Temperature

-35 to +55C

Variants:

Intelligent controls

Manual dimmers, PIR sensors, Photocells, voltage   optimisation, power conditioning etc.

RodLite – Internal

MHA Rodlite, the clever flourescent replacement

The RodLite GRP provides a direct low-energy LED replacement for fluorescent tubes – with all the benefits of LEDs.

The RodLite GRP’s patented LED technology creates glare-free uniformly distributed light and achieves LG Standards Lux levels – but typically uses 80% less energy. It is ideal for any internal or external application where fluorescent tubes are currently being used and is available with a variety of covers including prismatic diffusers to provide the same aesthetics as a fluorescent fitting.

For external applications such as multi-storey car parks, construction sites and subways the RodLite GRP is vandal-proof and is Ingress Protected. It is suited to heights of 2.4 to 8 meters and typically replaces 4,5,6,7 and 8 foot fluorescent tubes. The RodLite GRP will appeal to those customers who want to replace fluorescent tubes, whilst still achieving the same light output quality as well as the energy savings of LED.

RodLites can be used with power conditioning, voltage optimisation and intelligent controls such as dimmers, ambient settings and PIR sensors. The entire range is designed using MHA Lighting’s patented LED technology and complies with all British Standards. The range is EU Energy rated A and achieves LG standard LUX levels.

The    benefits:

Footnotes

Efficiency

Can achieve up to 80% energy savings compared to   traditional fittings

Zero Maintenance

Reducing costs and disruption of routine   maintenance

Lifespan

A useful lifetime of 60,000 hours

Light Distribution

Uniformly distributed glare-free light

Directionality

Light spillage and light pollution are removed by   using reflectors.

Shock resistant

RodLites are robust and do not break or explode   like traditional fittings

PSU Specifications

90-277 Volts AC DALI / DMX options available

Thermal Management

A heat sink design for reduced heat emissions for   temperature controlled environments.

Specifications:

LED Type

Philips Rebel (ES)

Colour Rendering

80 CRI as standard for internal applications and   65CRI as standard for external applications

Colour Temperature

3500 / 4000 / 4500 for internal applications and   5000 / 5500 for external applications

Product Type

Metallic, Acrylic and Polycarbonate

Warranty

Five to seven years depending upon operating   hours

Housing Type

Surface Mounted, Chain Suspended, Recessed,   Retrofit, Trunking Mounted

Ingress Protection

IP66 available upon request

Emergency Options

Integrated emergency options available in either   standard battery pack or 110 volts AC (to work with a back-up generator   system)

Output Content

450mA

Operating Temperature

-35 to +55C

Variants:

Retrofit design

This uses the existing housing and facia

Complete Unit

Identical to the Retrofit product but is recessed   behind its own cover and uses its own mounting brackets

Intelligent Controls

Manual dimmers, clocks, PIR sensors, Photocells,   voltage optimisation, power conditioning etc

Product   Code

LEDs Fitted

Wattage

Luminous Flux

Lumen Output

[including inefficiencies]

C70   – C100 600mm x 600mm x 135mm

C70

60/120 lumen

82

7200 lumens

6120 lumens

C80

70/120 lumen

95

8400 lumens

7140 lumens

C90

80/120 lumen

107

9600 lumens

7968 lumens

C100

90/120 lumen

123

10800 lumens

8640 lumens

C140   1200mm x 600mm x 135mm

C140

120/120 lumen

164

14400 lumens

11952 lumens

Product   Code

LEDs Fitted

Wattage

Luminous Flux

Lumen Output

[including inefficiencies]

600mm   x 600mm x 75mm

TiLite   20

16/100 lumen

24

1920 lumens

1327 lumens

TiLite   30

24/100 lumen

34

2400 lumens

2017 lumens

 

1200mm   x 600mm x 75mm

Double   TiLite 30

24/100 lumen

62

2400 lumens

2017 lumens

Double   TiLite 60

48/100 lumen

68

4800 lumens

4034 lumens

Product   Code

LEDs Fitted

Wattage

Luminous Flux

Lumen Output

[including inefficiencies]

Rodlite   16

16/120 lumen

23

1920 lumens

1656 lumens

Rodlite   20

20/120 lumen

29

2400 lumens

1999 lumens

Rodlite   GRP 24

24/120 lumen

34

2880 lumens

2448 lumens

Rodlite   GRP 30

30/120 lumen

45

3600 lumens

3139 lumens

Rodlite   40

40/120 lumen

53

4800 lumens

3984 lumens

Rodlite   30

48/120 lumen

62

5760 lumens

4608 lumens


Improving your world without costing the earth

Radiators are available in three main types, detailed as follows:

Type 11 Single panel, single convector. The first digit indicates 1 panel, second digit 1 convector [ridged metal fins on back of radiator]

Type 21 Double panel, single convector. The first digit indicates 2 panels, second digit 1 convector [ridged metal fins in middle of radiator, between panels]

Type 22 Double panel, double convector. The first digit indicates 2 panels, second digit 2 convectors [ridged metal fins in middle of radiator, between pa

nels]

Always check the manufacturers heat uotput data for each radiator you want to install.

Check my article on radiator sizing http://wp.me/p2hJc5-4d for further details.

View original post


Improving your world without costing the earth

Radiators are often not correctly sized for the room size or intended use. It is important to correctly size radiators for the size of room to be heated and environmental conditions. Rooms with large windows, north facing [in northern hemisphere] and south facing [in southern hemisphere] take more energy to maintain at a comfortable temperature. Radiator sizing also needs to take account of ceiling height. As heat rises a larger radiator size is needed for higher ceilings.

Always check manufacturers data for heat output, stated in BTU/Watt values. Note bathroom towel rail type radiators are generally not suitable to heat a bathroom. Be sure to calculate room heating requirements when choosing a towel radiator.

The table below details the correct values for different types of rooms and locations. The values are based on 1m³. You can multiply the table values by the volume of your room [length x width x height] to see what you need…

View original post 264 more words

Energy: Energy Storage in our future


Energy: Energy Storage in our future.

How NOT to Terminate 3 Core SWA Cable


I had problems with a low resistance fault on a ring final circuit during testing last week. After breaking the ring into sections I identified the defective section. I had to lift the floorboards in a bedroom to check for any cable defects or jointed connections. I was surprised to find the following junction box connection. It was connected to a supply to the detached garage outside.

How NOT to Terminate SWA Cable

The picture above shows SWA cable supplying a detached garage. The cable was connected into domestic Ring Final Circuit [RFC] under upstairs bedroom floor. SWA outer armour was not bonded at either end of cable run. PME/TNCS earthing system, so no adequate means of earthing in the garage. The SWA circuit cable was disconnected for safety reasons.

The picture below shows what should be done. A correct gland coupler has been used to connect outer armour to the accesory. This provides mechanical protection of the inner cores and a means of earthing of the outer SWA strands.

SWA Cable and Gland Coupler

I now use an adjustable pipe cutter to prepare SWA cable for connection to gland couplings.

Adjustable pipe cutter can be used to prepare SWA cable for termination into a gland coupler.

Two turns to cut outer PVC, then five to ten turns to cut individual SWA strands. This process is much quicker and cleaner than using a hacksaw.

The picture below shows the quality of preparation using an adjustable pipe cutter.

 

Hand cut SWA using a hacksaw and/or side cutters can be subject to failure due to uneven SWA strand lengths.

SWA cable cut using a hacksaw. Note uneven strand lengths. This makes connection to gland difficult with possible failure of coupling and bonding of SWA strands.

A little extra care and attention in the preparation can make for a much improved and long lasting installation.

Please let me know if you have any tips to improve the standard of electrical installations.

Energy Saved by Insulating Heating and Hot/Cold Water Pipes


The energy saving potential by Insulating Heating and Hot/Cold Water Pipes is often overlooked. This article briefly details the key points and financial benefits.

There are many benefits to insulating heating and hot/cold water supply pipes. The values listed below give details of what can be saved.

Insulating pipework saves money

The data is courtesy of Armacell and based on Manchester UK for temperature figures.

Pipework   Type Optimal   Insulation Poor/No   insulation Potential   Saving
Distribution 6.93% 17.73% 10.8%
Hot   Water 2% 4.5% 2.5%
Heating 4.75% 17.5% 12.75%
Ratio   of Heat Demand 12% 39% 27%

To make sense of these percentages we can assume that a home consumes £1000.00 worth of gas per year for heating/hot water. From the above data it is possible to save up to £270.00 per year by insulating all pipework.

It is expected that most homes can have all distribution pipework insulated for approximately £450.00. The pipe insulation has a minimum life expectancy of 30 years. So if gas prices did NOT increase for 30 years the following savings could be expected £7650.00 after 30 years, or -£180.00 in year 1, +£90.00 in year 2 and £270.00 for every year thereafter.

We can also factor in saving in wear on the boiler and circulating pump. If a boiler has a lifespan of 10 years, reduced use due to efficiencies could extend this to 12 years. This could reasonably save an additional £1500.00 over 30 years. Or put another way, in 40 years you would need to purchase one LESS boiler!

Looking at water quality, we have all experienced tepid water from the cold tap. This is not pleasant and wasteful, if a few litres/pints are drawn off until cold water is flowing. This is wasted heat [money] put into cold water which should not be there.

Please contact us to discuss your requirements or share your experiences of insulating pipework in your property.

Enegy Saving You Can Trust

Green Deal Ecologic improving your world without costing the earth.

Full details of the Armacell data: http://www.armaflex.de/www/armacell/ACwwwAttach.nsf/ansFiles/KeyTecHPEnergySaving207EN.pdf/$File/KeyTecHPEnergySaving207EN.pdf

Fatally Flawed Socket Covers Should NOT be Used


Socket Covers should NOT be inserted into sockets – they are dangerous!

  • British 13 Amp sockets have built in automatic shutters to protect against children poking things in them. First introduced 65 years ago, they are considered the safest in the world and do not require external covers.
  • No responsible national body recommends using socket covers.  That includes the UK Government, RoSPA, Ofsted, Child Accident Prevention Trust and Electrical Safety Council.
  • Sockets are made to accept plugs which meet very exact requirements.  Anything which is not a standard plug MUST be made to the same dimensions as required for plugs. No socket covers which meet those dimensions are available!
  • Socket covers introduce a variety of dangers; they make sockets less safe, not more.

Dangerous socket cover

Please follow the link to the Fatally Flawed website http://www.fatallyflawed.org.uk/ and spread the word. It may just save someones life.