平板型太阳集热器优化研究  

EXERGETIC OPTIMIZATION RESEARCH OF FLAT PLATE SOLAR COLLECTORS

作　　者：葛众[1] 王辉涛[1] 王华[1] 张凇源[1] 关欣[2] 

机构地区：[1]昆明理工大学冶金节能减排教育部工程研究中心,昆明650093 [2]上海理工大学能源与动力工程学院,上海200093

出　　处：《太阳能学报》2015年第7期1684-1689,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51066002);NSFC-云南联合基金(U0937604);云南省科技强省计划(2008KA002);云南省发改委项目(2008CD001);云南省应用基础研究(KKSY201252024)

摘　　要：基于热力学第一、二定律,采用拉格朗日条件极值法,以平板型太阳集热器的效率为目标函数,对平板型太阳集热器进行优化,在给定集热器结构参数以及环境条件的情况下,得到优化后的工质质量流量、进口温度以及效率。实验结果与计算结果吻合较好。讨论工质质量流量、工质进口温度、太阳辐射强度以及环境温度对效率的影响。对优化前后的效率进行比较,结果显示优化后的效率有显著提高。Based on the first law of thermodynamics and the second law of thermodynamics, exergetic optimization of fiat plate solar collectors was conducted with exergy efficiency as the objective function by means of Lagrange conditioned extreme value method, optimized mass flow, optimized inlet temperature and optimized exergy efficiency were obtained as structural parameters of solar collector and environmental conditions were given. The results of this model are in good agreement with the experimental data. The effect of mass flow, inlet temperature, solar radiation intensity, ambient temperature on the exergy efficiency were discussed. The results showed that optimized exergy efficiency has improved significantly.

关 键 词：平板型太阳集热器 [火用]效率 优化 拉格朗日条件极值法 

分 类 号：TK512[动力工程及工程热物理—热能工程]