化工学报Issue(12)：4958-4964,7.DOI:10.3969/j.issn.0438-1157.2014.12.042
太阳能有机朗肯循环系统的实验特性
Experimental characteristics of solar organic Rankine cycle system
摘要
Abstract
To study the performance of solar organic Rankine cycle (ORC) system, a low temperature solar ORC system is proposed and constructed. The system employs R245fa as the working fluid in the power cycle and WD350 heat transfer oil as the heat transfer fluid in the solar collector. The experimental installation consists of a trough solar collector, a screw expander, a working fluid pump, a heat regenerator, a water cooled condenser, and a vapour generator. When the solar beam radiation is about 400 W·m−2 in the experiment, the thermal oil temperature at the outlet of solar heat collector can reach up to 140℃. The collecting efficiency of the collector is 60% at the outlet oil temperature of 110℃. When the working mode of system changes from basic ORC to regenerative cycle, the calculated efficiency of the system is improved from 9.3% to 10.8%, and the experimental value is improved from 1.57% to 1.67%. The measured exergy efficiency of the system is about 10%. The value under regenerative cycle mode is higher than that under the basic ORC mode. The cycle performance at different working fluid flow rates was also studied. The measured maximum average power output was obtained at 386.27 W and working fluid flow rate of 6.88 kg·min−1. With the increase of working fluid flow rate, both expander inlet pressure and work output increase at fixed heat source temperature. With the increase of heat source temperature, the expander inlet temperature and pressure, and the power output increase at fixed flow rate.关键词
太阳能/有机朗肯循环/实验验证/热发电Key words
solar energy/organic Rankine cycle/experimental validation/thermal power generation分类
能源科技引用本文复制引用
宋建忠,张小松,李舒宏,姚启矿,顾维维..太阳能有机朗肯循环系统的实验特性[J].化工学报,2014,(12):4958-4964,7.基金项目
“十二五”国家科技支撑计划项目(2011BAJ03B05，2011BAJ03B14)。@@@@supported by the 12th Five-year National Science and Technology Support Key Project of China (2011BAJ03B05,2011BAJ03B14) （2011BAJ03B05，2011BAJ03B14）
