Experimental investigation on the low-temperature solar Rankine cycle system using R245fa
Experimental investigation on the low-temperature solar Rankine cycle system using R245fa
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DOI：
10.1016/j.enconman.2010.08.022
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发表时间：
2011-02
影响因子：
10.4
通讯作者：
Xiangxiang Wang;Li Zhao;Jun Wang
中科院分区：
文献类型：
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作者：
Xiangxiang Wang;Li Zhao;Jun Wang
以R245fa为工质，对低温太阳能朗肯循环系统的性能进行了实验研究。实验装置由平板集热器、节流阀、工作液泵、风冷冷凝器等组成。针对天津地区典型的10月份天气条件，实验结果表明，平板集热器的最高集热效率约为50%。由于工作流体的过热、过冷和实验样机的热损失，系统的朗肯循环效率低于理论值。在实验结果的基础上，提出了一种采用R245fa的太阳能朗肯循环系统内换热器，可以明显提高朗肯循环效率。
An experimental study is conducted to investigate the performance of a low-temperature solar Rankine cycle system using working fluid R245fa. The experimental installation consists of a flat plate collector, a throttling valve, a working fluid pump and an air cooled condenser, etc. For the typical weather conditions of October in Tianjin, the experiment results show that the highest heat collecting efficiency of the flat plate collector is about 50%. The measured Rankine cycle efficiency of the system is lower than the theoretical value, due to superheating, subcooling of the working fluid and heat loss of the experimental prototype. Based on the experimental results, an internal heat exchanger is proposed in the solar Rankine cycle system using R245fa, which can obviously improve the Rankine cycle efficiency.