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Constructal design of a shell-and-tube condenser with ammonia-water working fluid
International Communications in Heat and Mass Transfer ( IF 7 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.icheatmasstransfer.2020.104867 Huijun Feng , Cunguang Cai , Lingen Chen , Zhixiang Wu , Giulio Lorenzini
International Communications in Heat and Mass Transfer ( IF 7 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.icheatmasstransfer.2020.104867 Huijun Feng , Cunguang Cai , Lingen Chen , Zhixiang Wu , Giulio Lorenzini
Abstract A shell-and-tube condenser with ammonia-water as the working fluid is studied in this paper. Based on constructal theory, constructal design of the condenser is conducted. A complex function (CF) formed by entropy generation rate (EGR) and total pumping power (TPP) is minimized, and the tube diameter is optimized. The parameter influences on the optimal results are researched. The result reveals that the EGR, TPP and CF are respectively diminished by 0.92%, 20.60% and 1.18% in the comparative calculation example. Therefore, the CF reflects a trade-off between EGR and TPP. The gained results have certain guiding significances for the condenser designs with mixed refrigerants.
中文翻译：
氨水工质管壳式冷凝器的结构设计
摘要 本文研究了一种以氨水为工质的管壳式冷凝器。基于构造理论，对凝汽器进行了构造设计。由熵产生率 (EGR) 和总泵送功率 (TPP) 形成的复杂函数 (CF) 被最小化，并优化了管径。研究了参数对优化结果的影响。结果表明，在比较计算实例中，EGR、TPP和CF分别减少了0.92%、20.60%和1.18%。因此，CF 反映了 EGR 和 TPP 之间的权衡。所得结果对混合制冷剂的冷凝器设计具有一定的指导意义。
更新日期：2020-11-01
中文翻译：
氨水工质管壳式冷凝器的结构设计
摘要 本文研究了一种以氨水为工质的管壳式冷凝器。基于构造理论，对凝汽器进行了构造设计。由熵产生率 (EGR) 和总泵送功率 (TPP) 形成的复杂函数 (CF) 被最小化，并优化了管径。研究了参数对优化结果的影响。结果表明，在比较计算实例中，EGR、TPP和CF分别减少了0.92%、20.60%和1.18%。因此，CF 反映了 EGR 和 TPP 之间的权衡。所得结果对混合制冷剂的冷凝器设计具有一定的指导意义。
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