Appropriate assessment of disparity in some electrical parameters of selected bulbs

Ikwunze Okechukwu S Ikwunze Okechukwu S,Okparaku Victor I Okparaku Victor I,Igbokwe Kelechi K Igbokwe Kelechi K

doi:10.30574/gjeta.2021.9.2.0153

Ikwunze Okechukwu S Ikwunze Okechukwu S, Okparaku Victor I Okparaku Victor I + Show 1 more

Open Access

https://doi.org/10.30574/gjeta.2021.9.2.0153

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Abstract

The complaints, worries and dissatisfactions accrued to bulb users prompted the quest of this research. The objective of the research is to suitably assess few electrical parameters of bulbs available in the market in order to have an experimental proof of the disparity in their ratings. In the research experimental data, incandescent bulbs (100W and 200W), LED bulb (5W) and CFL bulb (40W) (of different powers) were selected for evaluation. The power and lux of the bulbs were measured and compared correspondingly using the incandescent bulbs as reference bulbs for lux comparison. The new double T8 full range & ac/dc power meter with dimmer was instrument used to measure power and other associated electrical parameters (current and voltage) of the bulbs. The measurement results show that incandescent bulb of 100W measured 60.1W and the 200W measured 184.0W. The power of the 5W LED and 40W CFL bulbs measured 7.2W and 22.2W respectively. On this note, it is invariably obvious that there exists disparity in power rating of the bulbs accessible in our present day market. The digital luxmetre was used to measure lux (luminous flux per unit area or lumen per metre square) of the bulbs. In the lux measurement, the luxmetre’s sensor was placed 50cm away from the bulb’s position to obtain exact or close values to original bulbs’ lux. Consequential to the bulbs lux comparisons, the lux value of 5W LED and 40W CFL bulbs have illuminances of 507lm/m2 and 568lm/m2 respectively higher than lux of 100W incandescent bulb. Hence, lux values of the LED and CFL bulbs measurements fall in-between lux values of 100W and 200W incandescent bulbs. Critical evaluation of the results tends to establish that luminosity (luminous flux per area) of bulb does not depend on power.

Highlights

The understanding of the world around us is achieved with the help of information reaching our five sense instruments, namely: eyes, ears, nose, tongue and skin
Lumen represented by lm is the SI derived unit of luminous flux that measures the total quantity of visible light emitted by a source per unit of time
The following are results of the experiments recorded of 100 watts and 200 watts’ incandescent bulbs, 5 watts light-emitting diodes (LEDs) bulb and 40 watts compact fluorescent lamp (CFL) bulb

Summary

Introduction

The understanding of the world around us is achieved with the help of information reaching our five sense instruments (organs), namely: eyes, ears, nose, tongue and skin. There are situations where the value of the emitted flux by a certain source of lighting is not part of the nominal data and is necessary to be determined. Lumen represented by lm is the SI derived unit of luminous flux that measures the total quantity of visible light emitted by a source per unit of time. In a CFL, an electric current is driven through a tube containing argon and a small amount of mercury vapor This generates invisible ultraviolet light that excites a fluorescent coating (called phosphor) on the inside of the tube, which emits visible light [4]. Digital Luxmetre The value of the luminous flux can be measured using the photometer integrator known as Ulbricht lumen meter, which consists of an empty metal or fiberglass sphere, painted in interior with matt, very fine grain white colour, that produces a multiple diffuse reflectance. With fuse in power sockets, it could protect load short circuit

Step 1

Step 2

Discussion of power disparity of the selected bulbs

Discussion of comparative nature of the selected bulbs’ lux

Conclusion