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Lighting Technology Information
Lighting is often the single largest electrical consumption and cost in non air conditioned buildings. For example, lighting can account for over 40% of electricity costs in naturally ventilated offices. Good lighting design can reduce these running costs. Attention to fabric detail at the sketch design stage to ensure the integration of day-lighting is particularly important in achieving this.
Improving the efficiency of your lighting is your first and easiest step to reducing energy consumption. The conversion of electricity to light usually represents the least efficient and most wasteful energy conversions in the electrical system using traditional incandescent light bulbs. Energy conversion efficiency can be calculated every time energy is converted from one form to another, i.e from coal electricity and from electricity to light. The conversion of coal to grid electricity at the plug, even including heat loss from power stations and transmission losses down the grid, is around 40%. You could say in this day and age that's pretty poor. However, the final conversion from electricity to light is less than 3% for traditional phosphorescent light bulbs. That is appalling. Energy efficient lights provide the same service but use a fraction of the power thus increasing the efficiency of this final step to 20-50%.
Energy efficient lighting should:
- Maximise natural daylight.
- Avoid unnecessarily high
- Incorporate the most efficient
- Lamp and circuit selection is a crucial part of energy efficient design.
- Include effective lighting controls.
- A luminaire comprises a housing, a reflector, a lamp and shielding (either louvres, or a lens or diffusing material) and, for discharge lamps, some form of control gear.
- The photometric efficiency is measured in terms of its light output ratio. This is the ratio of the total light output of the luminaire to that of the lamp(s) under reference conditions.
- The higher the light output ratio, for a given light distribution, the more efficient the luminaire.
There are no notable requirements for the installation of energy efficient lighting.
Information on the costs of energy efficienct lighting systems will be added here soon.
There are currently no grants available.
As long as no external modifications are undertaken, there should be no planning requirements associated with the installation of new energy efficient lighting at your property
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