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在不同冷凝温度条件下,以氨作为比较对象,选取R245ca、R245fa、R236ea、R236fa、正丁烷、异丁烷、正戊烷和异戊烷8种干有机工质,基于热力学第一定律和第二定律对其热力循环性能进行计算分析,并对工质的净功、热效率、气耗率和损失等进行比较。结果表明:在所选有机工质中,正戊烷具有最高的热效率和效率,最大的净功及最小的气耗率,且产生的系统损失较小;从净功方面比较,氨的做功能力远强于有机工质。
Under different condensing temperature conditions, eight kinds of dry organic compounds such as R245ca, R245fa, R236ea, R236fa, n-butane, isobutane, n-pentane and isopentane were selected as the comparative objects. Based on the first law of thermodynamics and The second law of its thermal cycling performance of the calculation and analysis of working fluid net work, thermal efficiency, gas consumption rate and loss compared. The results show that n-pentane has the highest thermal efficiency and efficiency, the largest net work and the lowest gas consumption rate in the selected organic working medium, and produces less system loss. Compared with net work, Far stronger than the organic working fluid.