| Title |
Experimental Study on the Performance of Heat Recovery Heat Pump System using R245fa Refrigerant |
| Authors |
Hyuntaek Kim ; Yongchan Kim ; Dongan Cha ; Ohkyung Kwon |
| DOI |
http://dx.doi.org/10.6110/KJACR.2016.28.10.408 |
| Keywords |
성능계수 ; 건조기 ; 열펌프 ; 배열회수 ; 냉매 COP ; Dryer ; Heat pump ; Heat recovery ; Refrigerant |
| Abstract |
The objective of this study is to investigate the performance of a heat recovery heat pump dryer using a R245fa refrigerant experimentally. In this study, the main components of the heat pump dryer were an evaporator, a compressor, a condenser, and an expansion valve. As a result, when the amount of refrigerant varied from 15 kg to 16 kg, the hot air outlet temperature in the condenser and the heat transfer rate were almost kept constant. Therefore, the amount of refrigerant at 16 kg was considered to be a suitable amount in the heat pump. As the air inlet velocity varied from 0.5 m/s to 1.5 m/s, the highest temperature in the condenser could be obtained when the air inlet velocity was 0.5 m/s. The heat transfer rate, system (COP), and hot air outlet temperature were 5.6 kW, 3.4, and 102.5℃, respectively, when the bypass ratio and water temperature were 0% and 60℃ |