First and second law analysis of ammonia/salt absorption refrigeration systems
First and second law analysis of ammonia/salt absorption refrigeration systems
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DOI：
10.1016/j.ijrefrig.2013.11.006
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发表时间：
2014-04
期刊：
影响因子：
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通讯作者：
L. G. Farshi;C. Ferreira;S. Mahmoudi;M. Rosen
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文献类型：
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作者：
L. G. Farshi;C. Ferreira;S. Mahmoudi;M. Rosen
氨/LiNO 3和氨/NaSCN吸收式制冷循环是氨/水循环的替代品，适用于温度低于0 °C的制冷应用。它们具有更高的性能系数（COP）值，并且不需要净化制冷剂蒸气。熵的数据，这样的解决方案计算使用他们最近发表的热物理性质的数据，我们研究和比较的周期。模拟结果被用来检查各种操作参数对性能的影响和在这些周期中结晶的可能性。结果表明，在低温下，氨/LiNO 3循环具有较好的性能。对于高的发生器温度，氨/NaSCN循环具有更好的性能，但是对于这种混合物，允许的发生器温度的范围非常有限。
Ammonia/LiNO3and ammonia/NaSCN absorption refrigeration cycles are alternatives to ammonia/water cycles for refrigeration applications at temperatures below 0 °C. They exhibit higher coefficient of performance (COP) values and do not require purification of the refrigerant vapor. Entropy data for such solutions calculated using their most recently published thermophysical property data; we study and compare the cycles thermodynamically. The simulation results are used to examine the influence of various operating parameters on performance and the possibility of crystallization in these cycles. It is shown that, for low generator temperatures, ammonia/LiNO3cycles have better performance. For high generator temperatures, ammonia/NaSCN cycles have better performance, but the range of allowable generator temperatures is quite limited for this mixture.