CAJ | 학술논문

本文通过理论计算对CO_2/DME混合制冷剂替代CO_2的跨临界制冷循环特性进行了分析,结果表明:CO_2/DME混合制冷剂的质量配比范围为90/10～100/0时,可实现混合制冷剂的直接充灌.在相同的工况下,CO_2/DME跨临界制冷循环的最优高压侧压力降低了3 MPa,制冷系数提高4.3%;过热度对循环性能的影响,纯质CO_2要大于混合工质CO_2/DME.
본문통과이론계산대CO_2/DME혼합제랭제체대CO_2적과림계제랭순배특성진행료분석,결과표명:CO_2/DME혼합제랭제적질량배비범위위90/10～100/0시,가실현혼합제랭제적직접충관.재상동적공황하,CO_2/DME과림계제랭순배적최우고압측압력강저료3 MPa,제랭계수제고4.3%;과열도대순배성능적영향,순질CO_2요대우혼합공질CO_2/DME.
The performance of a transcritical refrigeration cycle with an alternative refrigerant CO_2/DME for CO_2 is theoretically analyzed and calculated.The results indicated that the mixture refrigerant CO_2/DME is filled directly without changing a refrigeration system with a mass fraction of DME ranging from 0% to 10%.In the similar conditions,the CO_2/DME lowers the discharge pressures by about 3 MPa,and the coefIlcient of performance(COP)iS increased by about 4.3 percent.The influence of superheat on a pure refrigerant CO_2 is larger than that of the mixture refrigerant CO_2/DME.