Energy management - Technical

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RECOGNISE THE WASTE			EXPLOIT THE OPPORTUNITY
APPLICATION	WHAT TO LOOK FOR		WHAT YOU SHOULD DO	HOW YOU BENEFIT
GENERAL		Any lighting more than 10 years old. Fluorescent tubes with bayonet cap connections. Badly discoloured plastic diffusers or painted shades and reflectors. Lighting as recent as 5 years old. 1 1/2 inch (38mm) diameter fluorescent tubes.	Without question - have it replaced immediately. Get an expert survey done to assess the opportunities for energy-saving lighting refurbishment.		Refurbishment installations commonly produce 60% energy savings and paybacks in less than 18 months. Dramatic improvement of lighting quality is likely. High probability of major cost savings plus much better lighting.
GENERAL		Ordinary filaments light bulbs.	Replace then with compact fluorescent lamps in the same fittings, or if necessary renew the fittings. Replace with PAR-E or with low-voltage tungsten halogen lighting or metal halide discharge lighting.		Immediate energy cost savings of 75%, plus reduced maintenance through much longer lamp life. Overall lighting cost can be cut by half, at low capital cost.
INDUSTRIAL		Mercury fluorescent lamp bulbs. (MBF type) 'blue' mercury lights. Mercury/tungsten 'blended' lamps (MBTL type). Old 8 foot 125w Fluorescent fittings. High wattage light bulbs (300W to 1500W filament lamps).	For most 'high bay' applications, replace them with high pressure sodium (SON) lighting. For low mounting heights, replace with either high pressure sodium (SON) lighting or modern fluorescent lighting.		SON gives satisfactory colour rendering in most industrial applications, and is very energy effective. High frequency electronic or low-loss fluorescent lighting gives energy costs almost as low as SON lighting plus excellent colour rendering.
COMMERCIAL		2 foot 40w fluorescent fittings. Fluorescent fittings with opal diffusers. 'De Luxe' warm-tone fluorescent lamps.	Replace with modern louvred or high-performance prismatic lens fittings using power-saving 'triphosphor' lamps. High frequency electronic or low-loss ballasts can be particularly effective. Metal Halide and SON uplighters for certain applications.		Energy saving of 30-45% are commonly achieved, with much improved lighting quality - benefits include elimination of glare, flicker and hum; easy starting and good colour rendering.
DISPLAY		PAR 38 sealed beam reflector lamps Reflector lamps.	Replace with PAR-E or with low-voltage tungsten halogen lighting or metal halide discharge lighting.		Energy saving of 30-75% for equivalent lighting performance.
OUTDOOR Including amenity and security		Filament lamps (light bulbs).	Install new lighting using SON high pressure sodium lamps or compact fluorescent lamps.		Energy savings of 75-85%, and lower maintenance through longer lamp life, plus better lighting.
FLOODLIGHTING		High wattage filament lamps. Tungsten halogen floodlights.	Replace with SON high pressure sodium or mercury discharge lighting.		Energy savings of 60-80%, plus better lighting.
CONTROL OF LIGHTING		Large areas controlled by a 'switch near the door'. Lighting that has no 'middle way' between all-on or all-off. Lights blazing away outside normal working hours.	Get an expert to survey how you use and control the lighting in your premises.		Eliminating energy waste by use of modern control systems can reduce electricity consumption by typically 25-60% and provide better working conditions.