Analysis of compression-absorption cascade refrigeration cycles
Analysis of compression-absorption cascade refrigeration cycles
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DOI：
10.1016/j.applthermaleng.2012.02.035
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发表时间：
2012-07-01
影响因子：
6.4
通讯作者：
Ozturk, Ilhan Tekin
中科院分区：
文献类型：
--
作者：
Cimsit, Canan;Ozturk, Ilhan Tekin
本研究首次将lib - h2o对用于压缩吸收级联制冷循环的吸收段。对这些循环进行了理论分析，并与在压缩段和吸收段使用不同制冷剂进行了比较。叶栅吸收段采用lib - h2o和NH3- h2o作为流体对，叶栅循环蒸汽压缩段采用R134a、R-410A和NH3流体对。结果表明，在蒸发器温度为263 K，冷凝器温度为313 K的条件下，与以R134a、R-410A和NH3为工质的经典蒸汽压缩制冷循环相比，串级制冷循环的电能消耗降低了48-51%。结果表明，与NH3-H2O对相比，采用lib - h2o对作为吸收段，可使梯级制冷循环的热能消耗降低35%，总性能系数（COPcyclegen）提高33%。(C) 2012 Elsevier Ltd.版权所有。
In this study, LiBr-H2O pair was used for the first time for absorption section of compression absorption cascade refrigeration cycles. These cycles were analyzed theoretically and compared with using different refrigerants in the compression and absorption sections. While LiBr-H2O and NH3-H2O are used as fluid pair in cascade absorption section, R134a, R-410A and NH3 fluids were used in the vapour compression section of cascade cycle. It was presented that electrical energy consumption in the cascade refrigeration cycle is 48-51% lower than classical vapour compression refrigeration cycles that use R134a, R-410A and NH3 as working fluids under the same operating conditions, that are an evaporator temperature of 263 K and a condenser temperature of 313 K. Separately the results show that by using LiBr-H2O pair for absorption section the thermal energy consumption of cascade refrigeration cycle could be reduced by 35% and also general coefficient of performance (COPcyclegen) could be improved by 33% compared to the NH3-H2O pair. (C) 2012 Elsevier Ltd. All rights reserved.