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 othertypes of light sources. They are the least expensive to buy, but relatively inefficient and burdenedwith short lifespan hence at the long-run the most expensive to operate. The established fact thatabout 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 aslight indicating that only little amount of energy is needed to give intensity large enough fordomestic illumination. This research explores the durability of some incandescent bulbs, in theNigeria market, with response to voltage fluctuations, temperature and mechanical vibrations.The need for low power, efficient, and reliable energy-saving alternative bulb for indoor andoutdoor lightning was discussed in this paper.