The Comparison of Electrical Energy and the Economics of T8 LED bulbs with Spherical LED bulbs
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Abstract
This research compares T8 LED bulbs electrical energy and economics and Spherical LED bulbs used in pedestrian walkways. It aims to identify the advantages/disadvantages in terms of electricity consumption and economics. The voltage phase angle control circuit was designed and built for use with 5 adjustable brightness Spherical LED bulbs in the testing process. The Arduino Uno R3 microcontroller board was used for processing. It is then deployed to pedestrian walkways with PIR sensors to detect pedestrians. Setting the usual condition that no one walks through, all the lamps will have low brightness. Conversely, when someone crosses the path, the lamps will gradually increase their brightness simultaneously, all lights until they reach their maximum value and last until the delay time. After that, all the lamps will gradually dim down to the set minimum value again. The researcher recorded the electrical energy used during the period of 6:00 p.m. – 6:00 a.m. for a total of 30 days. The recorded energy values are compared with the energy values used by 3 conventionally installed T8 LED bulbs. The results showed that the energy consumption of Spherical LED bulbs was lower than that of T8 LED bulbs equal 35.7%. Nevertheless, the cost of using Spherical LED bulbs is higher than that of T8 LED bulbs, with a payback period of 4.74 years. However, if considering the long service life or the use of the lamp in a vast area, Spherical LED bulbs with voltage phase angle control technique will save more electricity costs than using T8 LED bulbs lamp work.
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