化工学报2016，Vol.67Issue(6)：2202-2210,9.DOI:10.11949/j.issn.0438-1157.20151803
回质回热吸附式制冷循环的热力学分析与方案优选
Thermodynamic analysis of mass and heat recovery adsorption refrigeration cycles and scheme selection
摘要
Abstract
Adsorption refrigeration is an energy-saving and environmental-friendly refrigerating method, which can utilize low-grade thermal energy. Under air-conditioning working conditions, silica gel-water mass and heat recovery systems are most often used. In order to understand which kind of cycle can improve the performance of the system under specific working conditions, the evaluating indicators of the first and the second laws of thermodynamics were adopted to analyze the COP, the exergetic efficiency and the cycle entropy production of the basic cycle, mass recovery cycle and mass and heat recovery cycle. The analysis showed that only when the heating source temperature was relatively low, the COP of mass recovery cycle was remarkably higher than that of basic cycle. The COP of mass and heat recovery cycle was significantly higher than that of mass recovery cycle only when the heating source temperature was relatively high. Consequently, the mass recovery cycle had its recommended highest heating source temperature and optimum heating source temperature, while the mass and heat recovery cycle had its recommended lowest heating source temperature and optimum heating source temperature. For example, under the typical air-conditioning working condition in summer of 90℃ heating source temperature, 10℃ evaporating temperature and 40℃ condensing temperature, the recommended highest heating source temperature of mass recovery cycle was 93℃, which is higher than the heating source temperature of 90℃. As a result, the mass recovery cycle was more suitable under this working condition and should be chosen rather than the mass and heat recovery cycle. Finally, the analysis of a chiller indicated that the given method and recommended working temperature intervals could provide guidance or advice on the scheme selection and system control for real systems.关键词
吸附式制冷/回质回热/热力学/熵Key words
adsorption refrigeration/mass and heat recovery/thermodynamics/entropy/exergy分类
通用工业技术引用本文复制引用
徐圣知,王丽伟,王如竹..回质回热吸附式制冷循环的热力学分析与方案优选[J].化工学报,2016,67(6):2202-2210,9.基金项目
国家自然科学基金创新研究群体项目（51521004）。Foundation item：supported by the National Natural Science Foundation of China of Innovation Team (51521004) （51521004）
