Investigation of Energy Conservation Potential for Convenience Stores in Thailand
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Abstract
The convenience stores in Thailand presents its continuing growth in both urban and rural areas. The stores possess various electric equipment for refrigeration, air-conditioning, lighting, cooking, with 7/24 service; resulting in high electricity demand. Those stores have been persistently conducted energy conservation; however, there is still a great potential for energy consumption reduction.
This research conducted detailed energy auditing to investigate the energy usage and its influencing factors. Nine convenience stores participated in the study. The results showed that the stores consumed electricity at 173,284 kWh/year, average peak power 20 kW, energy intensity 823 kWh/m2.year. The refrigeration shares 59–64% of the total energy consumption. The air-conditioning came the second with the consumption of 26-28% while the electric lighting consumed about 5%. This study proposed eight energy conservation measures including (1) Reflective ceramics painted roof, (2) Insulated roof for heat resistance, (3) Solar photovoltaic rooftop, (4) Reduction of glazed area, (5) inverter air-conditioner, (6) Inverter compressor for refrigerated open showcase, (7) Inverter compressor for walk-in cold room, and (8) 3-layers glass for walk-in cold room.
A mathematical model was developed for the store to present the energy usage in each system and the whole shop. For Thailand, the estimated conserved energy in the standalone and the commercial building’s store, implementing particular measure and combined measures, from 2019 – 2027 is about 9.9%. Therefore, these measures should be further evaluated for their investment worthiness.
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