低温地热水有机朗肯循环发电工质的优化 optimization of working fluids for low temperature geothermal water power generation based on organic rankine cycles.pdfVIP
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低温地热水有机朗肯循环发电工质的优化 optimization of working fluids for low temperature geothermal water power generation based on organic rankine cycles
低温地热水有机朗肯循环发电工质的优化 胡颢然,吴俐俊,张历华 (同济大学机械与能源工程学院,上海市201408) rankine 摘要:有机朗肯循环(organiccycle,ORC)是利用地热发电的重要途径之一,而有机工质的物性是影响ORC 发电效率的主要因素。针对地热水的特点,筛选了R134a、R245fa等6种有机工质,并对每种工质的余热发电系统进行 计算。从系统的热效率、不可逆损失、压力水平及环保性等方面综合分析,得出R245fa是低温地热水ORC发电系统比 较适合的有机工质。 关键词:地热发电;有机朗肯循环(ORC);工质;低温地热水 of for FluidsLow GeothermalWater OptimizationWorking Temperature PowerGenerationBasedon Rankine Organic Cycles HU Lihua Haoran.WU Lijun,ZHANG ofMechanical (School Engineering,TongjiUniversity,Shanghai201408,China) of Rankine onethe to with ABSTRACT:OrganicCycle(ORC)isimportantwaysgenerateelectricitygeothermalresource, andthe of fluidisthemainfactorthatinfluencesthe ofORC physicalpropertyorganicworking efficiencypowergeneration. of of andR245fa tothecharacteristics kinds asR134a were According geothermalwater,6 organicworkingfluids,such thewasteheat witheachselectedfluidswerecalculated the selected,and powergenerationsystem repectively.Through and of thermal level environmental comprehensiveanalysissystem’S efficiency,irreversibleloss,pressure protection,R245fa isfoundsuitable fluidforORC withlow water. organicworking powergenerationsystem temperaturegeothermal ranldne fluids;low
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