TY - JOUR
T1 - Study on the impact of a novel honeycomb gas cooler on the performance and discharge pressure control of a transcritical CO2 heat pump system
AU - Zhang, Pengfei
AU - Wang, Zhihua
AU - Zhang, Yujia
AU - Wang, Fenghao
N1 - Publisher Copyright:
© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2025.
PY - 2025/3
Y1 - 2025/3
N2 - For improving the performance of transcritical CO2 air source heat pump (ASHP), in our previous work, a new type honeycomb gas cooler with high compactness, pressure bearing capacity, and heat exchange capacity was proposed. To investigate the impact of the honeycomb gas cooler on the performance of transcritical CO2 ASHP system, a steady-state mathematical model of the system is established in this paper. Also, the effects of key parameters on the coefficient of performance (COP) and optimal discharge pressure of the system are studied. The results indicate that the influence weight of evaporation temperature, outlet/inlet water temperature and pinch point temperature difference on the optimal discharge pressure accounts for more than 94.36 %. In addition, a correlation formula of optimal discharge pressure is established with these four parameters as independent variables, and the maximum deviation between theoretical and simulated values of optimal pressure and COP is 10.74 % and −11.80 %, respectively.
AB - For improving the performance of transcritical CO2 air source heat pump (ASHP), in our previous work, a new type honeycomb gas cooler with high compactness, pressure bearing capacity, and heat exchange capacity was proposed. To investigate the impact of the honeycomb gas cooler on the performance of transcritical CO2 ASHP system, a steady-state mathematical model of the system is established in this paper. Also, the effects of key parameters on the coefficient of performance (COP) and optimal discharge pressure of the system are studied. The results indicate that the influence weight of evaporation temperature, outlet/inlet water temperature and pinch point temperature difference on the optimal discharge pressure accounts for more than 94.36 %. In addition, a correlation formula of optimal discharge pressure is established with these four parameters as independent variables, and the maximum deviation between theoretical and simulated values of optimal pressure and COP is 10.74 % and −11.80 %, respectively.
KW - Discharge pressure
KW - Honeycomb gas cooler
KW - Supercritical carbon dioxide
KW - Transcritical CO heat pump
UR - https://www.scopus.com/pages/publications/105001090064
U2 - 10.1007/s12206-025-0239-9
DO - 10.1007/s12206-025-0239-9
M3 - 文章
AN - SCOPUS:105001090064
SN - 1738-494X
VL - 39
SP - 1487
EP - 1501
JO - Journal of Mechanical Science and Technology
JF - Journal of Mechanical Science and Technology
IS - 3
ER -