【摘要】 对单级加热与双级加热两种形式的CO2跨临界循环热泵热水系统进行分析对比,并对CO2跨临界循环热泵双级加热热水系统进行了运行参数的分析.发现双级加热系统有不同于单级加热系统的规律,前者更为灵活,通过增加预热器,还可适当地提高能效比.在实际应用中应根椐使用要求采用不同的热水循环系统和运行参数,使系统达到最佳状态.更多还原

【Abstract】 CO2 transcritical heat pump singlestage water heating system and doublestage water heating system are studied and compared, and their performance properties are analyzed, which indicates that the operation rule of doublestage water heating system is different from that of the single. The former, which is more flexible than the latter, can improve the coefficient of the system performance by installing a preheater. In practical applications, different water heating systems and operation parameters are chosen in order to reach the optimum state.更多还原