摘要
给出了CO2 跨临界循环地源热泵的系统流程 ,并在考虑输气系数和绝热效率的基础上 ,与R2 2和R134a等进行了循环性能比较。结果表明 ,用于需要较高供水温度的空调系统或热水供应系统时 ,CO2 可具有和常规工质相当的性能。同时对于一特定的CO2 地源热泵 ,分析了在热水流量和热水温度变化时的运行特性 ,并讨论了CO2
The layout of CO2 transcritical cycle ground source heat pump system was presented. The CO2 ground source heat pump system was compared with the cycle of R22 and R134a account of the volumetric efficiency and isentropic efficiency. The results showed that the performance coefficient of CO2 ground source heat pump system can approach to that of the conventional refrigerants, when it is applied to the air-conditioning systems that needs high temperature of outlet water or tap heating systems. The operating characteristics of CO2 ground source heat pump system at the various water temperatures and fluxes were studied. In addition, the methods of capacity control of the CO2 ground source heat pump system were discussed.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2003年第1期41-45,共5页
Acta Energiae Solaris Sinica
基金
国家自然科学基金资助项目 ( 5 98760 2 8)
教育部高等学校博士学科点专项科研基金项目 (D0 2 0 0 10 5 )
天津大学"2 11工程"重点学科建设项目 (TD2 11 95 0 10 6)
