化工进展2018，Vol.37Issue(5)：1781-1788,8.DOI:10.16085/j.issn.1000-6613.2017-1352
太阳能有机朗肯-闪蒸循环工质选择
Working fluid selection for solar binary-flashing cycle
摘要
Abstract
As a research hotspot in the renewable energy field,low-temperature solar thermal power technologies have attracted more and more attention in recent years. A mathematical model for the binary-flashing cycle(SBFC)driven by flat-plate solar collectors was developed based on EES (engineering equation solver)software. The potential of seven refrigerants,including R601,R601a, R1233zd(E),R600,R1234ze(Z),R600a and R1234ze,used as working fluid in the SBFC had been examined. The effect of hot water temperatures at solar collector outlet ranging from 80℃ to 100℃ on the thermodynamic performance of the SBFC had also been analyzed under the conditions of maximum net power output. In the analysis,the net power output,thermal efficiency,exergy efficiency,exergy loss,thermal conductivity of heat exchanger(UA,the product of overall heat transfer coefficient and heat transfer area),and the net power output per unit solar collector area were selected as performance indicators. Results showed that under the given working conditions,the increase in the hot water temperature at solar collector outlet can significantly improve the thermodynamic performance of the SBFC system. The systems with the working fluids having higher normal boiling temperature would yield the better thermodynamic performance. Among the working fluids examined, R601 produced relatively high net power output,thermal efficiency as well as exergy efficiency and had relatively low total exergy loss. So it is recommended to use R601 as an ideal working fluid for the SBFC system.关键词
低温太阳能热发电/太阳能平板集热器/有机朗肯-闪蒸循环/热力性能Key words
law-temperature solar thermal power generation/flat-plate solar collector/binary-flashing cycle/thermodynamic performance分类
能源科技引用本文复制引用
刘茜,李华山,卜宪标,王令宝,龚宇烈..太阳能有机朗肯-闪蒸循环工质选择[J].化工进展,2018,37(5):1781-1788,8.基金项目
国家重点研发计划(2017YFB0903201)、广东省自然科学基金(2016A030313174)、中国科学院可再生能源重点实验室基金(Y607j11001)、广州市科技计划(201607010106)及中国科学院青年创新促进会项目(2017402). （2017YFB0903201）
