RELIABILITY ASSESSMENT OF INCANDESCENT LIGHT BULBS IN NIGERIA MARKET AND CASE FOR ENERGY SAVING ALTERNATIVE

Incandescent lamps have been observed to have low manufacturing cost when compared to other types of light sources. They are the least expensive to buy, but relatively inefficient and burdened with short lifespan hence at the long-run the most expensive to operate. The established fact that about 90 to 95 per cent of the power consumed by an incandescent light bulb is emitted as heat, rather than as visible light implies that just about 5 to 10 per cent of the power is given out as light indicating that only little amount of energy is needed to give intensity large enough for domestic illumination. This research explores the durability of some incandescent bulbs, in the Nigeria market, with response to voltage fluctuations, temperature and mechanical vibrations. The need for low power, efficient, and reliabl