| Title |
Simulation Study on the Performance Improvement of a Transcritical Carbon Dioxide Cycle |
| Keywords |
Carbon dioxide ; 이산화탄소 ; Transcritical cycle ; 초월임계 사이클 ; Expander ; 팽창기 ; Internal heat exchanger ; IHX, 내부열교환기 ; 2-stage compression-intercooling cycle ; 2단압축-중간냉각 사이클 |
| Abstract |
The performance of a heat pump using CO2 is predicted and analyzed by using a cycle simulation model developed in this study. Cycle simulations are conducted by varying design parameters and operating conditions with the applications of advanced techniques to improve system performance. The applied systems in the simulations are internal heat exchanger, expander, and 2-stage compression with intercooling. As a result, the applications of advanced techniques improve the heating and cooling performances of the transcritical CO2 cycle by 8～26% and 20～30%, respectively, over the basic cycle. |