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Simulation of a hybrid dew-point evaporative cooling system |
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| รหัสดีโอไอ | |
| Creator | 1. R. Somsanuk 2. T. Kamonsan 3. E. Schulz 4. A. Koonsrisuk |
| Title | Simulation of a hybrid dew-point evaporative cooling system |
| Publisher | Thai Society of Mechanical Engineers (TSME) |
| Publication Year | 2563 |
| Journal Title | Journal of Research and Applications in Mechanical Engineering (JRAME) |
| Journal Vol. | 8 |
| Journal No. | 2 |
| Page no. | 114-134 |
| Keyword | HDPEC, evaporative cooling, TRNSYS, 7-Eleven, air-conditioning, hybrid |
| URL Website | https://tci-thaijo.org/index.php/jrame/index |
| Website title | Journal of Research and Applications in Mechanical Engineering (JRAME) |
| ISSN | 2229-2152 |
| Abstract | This article aims to investigate the factors influencing the performance of a hybrid dew-point evaporative cooling system (HDPEC) in a 7-Eleven store in Thailand. Those factors are the channel length, channel gap, air flow rate, and operational strategy of the system. The simulations were conducted using the TRNSYS program. The hybrid system consists of a dew-point evaporative cooler and a vapor-compression air-conditioning system (VAC). Three operational strategies were examined. The first is that both evaporative cooler and VAC operate 24 hours simultaneously. The second is that the cooler and VAC are on when the room temperature is higher than 25?C and they are off when the room temperature is less than 23?C. The third is that only the VAC operates and it is on when the room temperature is higher than 25?C and is off when the room temperature is less than 23?C. It was revealed that the second strategy consumes the least electricity compared to the others. In addition, the performances of HDPEC in the provinces of Bangkok, Nakhon Ratchasima, Sakon Nakhon, and Chiang Mai were compared. It was found that the annual power consumption of a 7-Eleven store with HDPEC in Bangkok is 39.62% less than that of the store with VAC alone. This is the largest reduction of power consumption among the provinces studied. The wet-bulb effectiveness and the payback period of the system in Bangkok are 1.37 and 3.5 months, respectively. |
