摘要
基于热力学第一、第二定律,建立热回收型太阳能分级溶液集热/再生系统的能量与(火用)分析数学模型。通过对比分析系统的(火用)效率和再生效率,揭示各种因素对系统热力学性能的影响,结果发现系统的(火用)效率高于再生效率,说明系统对能量“质”的利用程度高于对能量“量”的利用程度。通过系统各部件(火用)损系数分析得到这些参数的最佳范围,优化后的系统再生效率和(火用)效率分别为27.3%、29.4%。通过系统(火用)损率分析可知,系统中的薄弱环节在一级太阳能集热/再生器、二级太阳能集热/再生器以及填料式除湿器。
Based on the first and second laws of thermodynamics,a mathematical model of energy and exergy analysis of the solar graded solution heat collection/regeneration system with heat recovery is established.Exergy efficiency and regeneration efficiency of this system are compared to reveal the influence of various factors on the thermodynamic performance of the system.It is found that exergy efficiency of the system is higher than regeneration efficiency,indicating that the utilization degree of energy quality is higher than that of energy quantity.The optimal ranges of these parameters are obtained by analyzing the exergy loss coefficients of all components of the system.The regeneration efficiency and exergy efficiency of the optimized system are 26.6%and 32.3%,respectively.The analysis on exergy loss rate of the system shows that the weak links in the system are the first-grade solar collector/regenerator,the second-grade solar collector/regenerator and the packed dehumidifier.
作者
彭冬根
詹镇通
Peng Donggen;Zhan Zhentong(School of Infrastructure Engineering,Nanchang University,Nanchang 330031,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2023年第9期241-248,共8页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51766010)
南昌市高效制冷技术创新团队(2018-CXTD-004)。
关键词
太阳能
热回收
能量
(火用)
溶液再生
solar energy
heat recovery
energy
exergy
liquid regeneration
