| Title |
Simulation on a Residential Heat Pump System Using CO2 |
| Keywords |
Carbon dioxide ; 이산화탄소 ; Transcritical cycle ; 초월임계 사이클 ; Heat pump ; 열펌프 |
| Abstract |
The performance of a residential heating and cooling system with CO2 is predicted by using a cycle simulation model. The simulations are conducted by varying design parameters and operating conditions. The efficiency of the transcritical cycle can be improved by utilizing the advantages in heat transfer characteristics of CO2 and developing microchannel indoor and outdoor heat exchangers. For the designed system of this study, the predicted COP of the heat pump system is approximately 3.5 in the heating mode and 3.0 in the cooling mode. The predicted optimal discharge pressure for the heat pump system is approximately 11MPa in the heating mode and 9MPa in the cooling mode. |