Analysis of an absorption/absorption-compression refrigeration system for heat sources with large temperature change
Analysis of an absorption/absorption-compression refrigeration system for heat sources with large temperature change
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大温变热源吸收/吸收压缩制冷系统分析
DOI：
10.1016/j.enconman.2016.01.063
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发表时间：
2016-04-01
影响因子：
10.4
通讯作者：
Jin, Hongguang
中科院分区：
文献类型：
--
作者：
Chen, Yi;Han, Wei;Jin, Hongguang
吸收式制冷系统是一种很有前途的降低制冷和冷却领域用电量的方法。为了提高吸收式制冷系统的热能利用性能，提出了一种大工作范围的吸收/吸收压缩式制冷系统。该系统由传统的单效吸收式制冷子循环和吸收压缩式制冷子循环组成，它们共用冷凝器、蒸发器、吸收器等相关部件。从该系统排出的废气的温度可以比来自传统的单效吸收式制冷系统的废气的温度低35摄氏度。当蒸发温度为15 ℃时，单位质量烟气的制冷量达到58.95 kJ kg（-1），比单效吸收式制冷系统提高了28.21%。该系统的火用效率高达25.94%。为了指明系统优化的方向，对新系统进行了进一步的参数分析。新型吸收/吸收-压缩制冷系统为有效利用温度变化大的热源或不同温度的多个热源提供了一种很有前途的方法。(C)2016由Elsevier Ltd.出版
Absorption refrigeration systems are a promising way to reduce electricity consumption in the field of refrigeration and cooling. To improve the thermal energy utilization performance of the absorption refrigeration system, an absorption/absorption-compression refrigeration system with a large working range is proposed in this paper. The new system consists of a conventional single-effect absorption sub cycle and an absorption-compression refrigeration subcycle, and they share the condenser, evaporator, absorber and some other relative components. The temperature of the waste gas exhausted from the system can be 35 degrees C lower than that of the waste gas from a traditional, single-effect absorption refrigeration system. For the proposed system, the cooling capacity per unit mass of flue gas reaches 58.95 kJ kg(-1) when the evaporation temperature is 15 degrees C, which is 28.21% higher than that of the single-effect absorption refrigeration system. The exergy efficiency of the proposed system is as high as 25.94%. To indicate the direction of system optimization, the new system is further studied using a parametric analysis. The new absorption/absorption-compression refrigeration system provides a promising way to efficiently utilize heat sources with large temperature change or multiple heat sources with different temperatures. (C) 2016 Published by Elsevier Ltd.