Abstract:
The objective of this research was to decrease electrical consumption of an office building of an oil and gas platform construction factory located at Laem Chabang Industrial Estate to at least 10%. According to the consumption data in 2022, this building consumed 660,101.0 kWh while the whole organization consumed 1,710,145.0 kWh, or this building used 38.6% of the whole consumption of this organization. After the detailed study of the consumption, it was concluded that most of the consumption in this building was from the air conditioning and lighting systems, accounting for 69.4% and 24.3%, respectively. Brain storming of related persons found that the causes of the problems were (1) the use of 226 T5 and 367 T8 fluorescent lamps, (2) the lighting system in the 8 restrooms were never turned-off during the working time, and (3) the lack of maintenance of 88 split-type air conditioning systems. Therefore, three measures were implemented. They were (1) changing to LED T5 and T8 to replace the whole fluorescent lamps, (2) installing 8 motion capture switches to turn on and turn off lighting in the 8 restrooms, and (3) preventive maintenance of the 88 air conditioning systems. After practicing all of the measures, the electrical saving and break-even points were as follows: 51.2% and 0.8 year for the measure (1), 50% and 11.2 years for the measure (2) and 7.6% and 0.6 year for the measure (3), respectively. The consumption of this building in 2023 was 544,072.1 kWh, less than the previous year of 116,028.9 kWh or 17.6% reduction.
Keywords: electrical power consumption, air conditioning system, lighting system