| Title |
A Dynamic Characteristic of the Multi-Inverter Heat Pump with Frosting |
| Authors |
박병덕 ; 이주동 ; 小山繁 ; 황일남 ; 장세동 ; 황정하 |
| Keywords |
Frosting ; 착상 ; Multi-inverter heat pump ; 멀티 인버터 열펌프 ; Transient ; 비정상 |
| Abstract |
In the case of heat exchangers operating under frosting condition, the growth of frost layer causes the heat exchanger to increase the thermal resistance and pressure loss of the air flow. In this paper, a transient characteristic prediction model of the heat transfer for multi inverter heat pump with frosting on its surface was presented taking into account the change of the fin efficiency due to the growth of the frost layer. In this dynamic simulation program, which was performed for a basic air conditioning system model, such as evaporator, condenser, compressor, linear electronic expansion valve(LEV) and bypass circuit. The theoretical model was driven from the obtained heat transfer coefficient and mass transfer coefficient, independently. And we consider heat transfer performance was only affected by a decrease of the wind flow area. The calculated results were compared with some cases of experiments for frosting conditions. |