Let’s have a brief about how light is measured. All lights are used for the sole purpose of illumination or lightening the surface. Light emitted by lamps is measure for example a 100-watt incandescent lamp emits about 1750 lumens of light. Intensity of illumination is then measured in foot candles. One Afoot candle equals to one lumen distributed over one square foot area. Generally 30 to 50 foot candles illumination is deemed as sufficient for the home or office applications and for detail work or more accuracy and less eyestrain 200 foot candles of illumination. Likewise 5 to 20 foot-candles illumination is sufficient to help you find your way to home during dark hours. One of the way to reduce electricity consumption in house and offices is to use such lighting sources that may produce more illumination from less energy consumption. This is called efficacy. Efficacy can be measured by dividing number of lumens by rate of electricity consumption (lumens per watt). The new lightening elements used in compact fluorescent light (CFL) produce more illumination in less electricity consumption hence a unit of lesser capacity is capable of producing more illumination than a higher watt incandescent bulb.
Archive → June, 2011
If you are really concerned about the energy consumption in your house, office or building and want to reduce it not only to cut the cost of your electric bills but also to protect environment, here are some tips that you can easily implement in your premises and live healthy and happy life for long.
1. Make the best possible use of natural lights and airs in your house or offices. Make sure that you have proper windows and skylight arrangements in rooms that let the light in for most hours of the day but keep the heat out. This is possible by installing windows into south or north directions so that it will not let the direct heat enter your house and help you maintain cooling / heating effects amicably.
If you are wondering about the lighting solutions in your house or office and are confused about the uses and availability of different types of lights and fixtures, lets have a look at three most popular and usable technologies.
Incandescent bulbs which we have been using for years so far create light by passing electricity through a metal filament until it becomes so hot that it glows. Incandescent bulbs release 90% of their energy as heat.