CAJ | 학술논문

分析了回热器对跨临界CO_2压缩循环效率等的影响,推导出回热器对系统的制热效率影响的判别式.在带回热器和不带回热器两种情况下完成了跨临界CO_2水源热泵系统的实验.实验结果表明:带回热器的跨临界CO_2水源热泵系统的制热效率和制冷效率略高于不带回热器时系统的效率;带回热器时热泵系统的制热效率比不带回热器系统的制热效率高约4%~8%.
분석료회열기대과림계CO_2압축순배효솔등적영향,추도출회열기대계통적제열효솔영향적판별식.재대회열기화불대회열기량충정황하완성료과림계CO_2수원열빙계통적실험.실험결과표명:대회열기적과림계CO_2수원열빙계통적제열효솔화제랭효솔략고우불대회열기시계통적효솔;대회열기시열빙계통적제열효솔비불대회열기계통적제열효솔고약4%~8%.
The influence on the COP_h of transcritical CO_2 compression cycle was analyzed when internal heat exchanger was used. A criterion was presented. A comparison was made between two compression cycles, namely, the compression cycle with intenal heat exchanger (IHX) and the compression cycle without IHX. Experiment was made at different working conditions. Experimental results show IHX can improve COP of transcritical CO_2 heat pump system. Employment of IHX slightly increases the COP_h of the system by 4%~8%.