Journal
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
Volume 40, Issue -, Pages 111-121Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrefrig.2013.11.006
Keywords
Enthalpy; Entropy; Exergy; Ammonia/LiNO3; Ammonia/NaSCN; Absorption refrigeration
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Ammonia/LiNO3 and ammonia/NaSCN absorption refrigeration cycles are alternatives to ammonia/water cycles for refrigeration applications at temperatures below 0 degrees 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/LiNO3 cycles 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. (C) 2013 Elsevier Ltd and IIR. All rights reserved.
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