| Title |
Experimental Study on Temperature Stratification in Domestic Hot Water Tank by Using Air Cooled Heat Pump System |
| Authors |
Jin Man Kim ; Tae Hun Lim ; Man Young Ha |
| DOI |
https://doi.org/10.6110/KJACR.2019.31.11.513 |
| Keywords |
온도 성층화; 축열 탱크; 히트 펌프 시스템; 가정용 급탕 Temperature stratification; Thermal storage tank; Heat pump system; Domestic hot water |
| Abstract |
The heat energy storage of the domestic hot water system is an energy management technology that efficiently stores and supplies heat energy when needed. One of these thermal energy storage technologies, the water heat storage method using sensible heat, is a method commonly used for heating water at residential facilities. According to the heat exchange method for accumulating heat, there are indirect heating methods using a heating coil in the tank and the direct heat exchange method from water circulating with the heat pump. In this study, the stratification performance and COP of the heat storage tank were reviewed through experiments. It can change the heat exchange method inside the hot water tank from hot water generated by the heat pump system as the result of the stratification experiment of the hot water tank. It is confirmed that the mixing state was formed in both experiments, and that there was no formation effect of the variable temperature layer. |