基于MATLAB改进的相变蓄热集热器在太阳能制冷系统中的性能分析

为提高太阳能制冷系统的性能参数,建立了集热蓄热一体化集热器模型,以进行应用计算。基于TRNSYS与MATLAB软件联合模拟运行的无辅助热源的太阳能吸收式制冷系统,分别对采用传统集热器的系统和采用改进后的相变蓄热集热器的系统的各部分参数的变化进行分析,对集热器的效率、系统制冷量和性能系数进行了对比。模拟结果表明,在太阳能吸收式制冷系统中,采用改进后的相变蓄热集热器,与传统的集热器相比,其集热效率提高约7.62%,系统制冷量增加约9.99%,系统的COP增加约23.60%。本模型能较好地应用于太阳能吸收式制冷系统的模拟。

Performance analysis based on MATLAB improved phase change thermal storage collectors in solar refrigeration system

Based on TRNSYS and MATLAB, jointly run without auxiliary heat source solar absorption refrigeration system. Analyze the difference and the change of parts of the system parameters which use the phase change traditional collectors and improved regenerative collector. Comparing among the collector efficiency, refrigeration capacity and coefficient of performance. The simulation results show that comparing using the improved phase change thermal storage heat collector with using traditional in the solar absorption refrigeration system, the collection efficiency is about 7.62% higher, the system capacity increases nearly 9.99%, and the COP of the system increases nearly 23.60%.