低温有机工质朗肯循环发电系统的设计研究  

DESIGN AND RESEARCH ON LOW-TEMPERATURE ENERGY CONVERSION SYSTEM BASED ON ORGANIC RANKINE CYCLES(ORCs)

作　　者：魏莉莉[1,2] 张于峰[1] 陈信鑫[1] 穆永超[1] 杨晓晨[1] 马洪亭[1] 

机构地区：[1]天津大学环境科学与工程学院,天津300072 [2]宁波工程学院建筑工程学院,宁波315016

出　　处：《太阳能学报》2012年第5期821-826,共6页Acta Energiae Solaris Sinica

基　　金：国家重点基础研究发展(973)计划(2009CB219907);长江学者和创新团队发展计划(IRT0936)

摘　　要：设计建造了以有机工质朗肯循环为基础的低温热能发电系统。机组采用"壳管式预热器+满液式蒸发器"来提供饱和蒸汽,推动双螺杆膨胀机完成能量转换。系统的理论能量转换效率为10.0%～12.6%,系统实际效率为3.6%～6.0%,偏差源自不可逆损失和转动部件消耗的动能。样机的测试结果证明了低温热能发电系统的可行性,为大型机组的设计提供了实验基础和设计依据。A low-temperature energy conversion system was designed, to make full use of low-grade renewable en- ergy, like solar energy, geothermal energy, and the waste heat from industrial processes. In this prototype, shell and tube heat exchanger, which provides long path for the organic fluid, was adopted as the pre-heater. Flooded heat exchanger was taken as the evaporator. Screw expander is pushed by the saturated organic steam, converting heat energy into power. The ideal energy conversion efficiency is 10.00%-12.60% , while the test efficiency is 3.60%-6.00%. The difference comes from irreversible loss and the energy consumption of the gearing device. This prototype verifies the feasibility of low-temperature heat-to power energy conversion. For the design of industrial unit, it provides theoretical and experimental guideline.

关 键 词：低温热能 发电 有机工质 朗肯循环 

分 类 号：X382.1[环境科学与工程—环境工程]