天然工质应用于逆向Brayton循环中的理论分析

摘要

通过对逆向布雷顿循环(Brayton cycle)中使用若干种天然工质的理论计算表明：利用部分阻燃性气体(如N2，CO2)等与碳氢化合物(烷烃)的混合物作为制冷工质，是氟里昂工质的一种理想替代物，不仅具有安全、不燃、无公害的特点，使用于两相多元非共沸物膨胀制冷循环中具有制冷系数高、单位质量制冷(热)量大的优点。%Natural working substances,such as CO2,N2,ortho-butane,para-butane,are used.By calculating their state parameters in the cycle we obtained the optimal working substabce constitution and how the cycle is affected by the parameters.Finally we'　ve proved theoretically the advantage and the lovely prospect of Backward brayton cycle.Advanced exprimental proof has been carried out.