Abstract
The performance of the thermoelectric heat pump low-temperature water heater was investigated under various operating conditions. The experiment results show that the coefficient of performance decreases and the heating time shortens with the increase of the applied voltage. At low ambient temperatures, the heat absorbed from ambient air may decrease with the increase of the temperature of hot water. However, at high ambient temperatures, the heat absorbed always increases with the increase of the temperature of hot water. The higher the ambient temperature is, the higher the cold side temperature is and the smaller the temperature difference between the hot and cold sides becomes, leading a larger coefficient of performance. Under an applied voltage of 117 V and a hot temperature of 35°C, the coefficient of performance with an ambient temperature of 30°C is 1.68, and the coefficient of performance with an ambient temperature of 5°C is only 1.22.
| Original language | English |
|---|---|
| Pages (from-to) | 1338-1341 |
| Number of pages | 4 |
| Journal | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University |
| Volume | 41 |
| Issue number | 11 |
| State | Published - Nov 2007 |
Keywords
- Coefficient of performance
- Thermoelectric heat pump
- Water heater