摘要
本文借助TRNSYS软件建立了具有辅助锅炉,无蓄热和回热系统的典型槽式太阳能有机朗肯循环热发电系统,采用西安地区的气象参数作为输入,分析讨论了槽式集热器不同跟踪方式的差异、有机工质和蒸发温度对有机朗肯循环的效率和输出功率的影响、循环冷却水流量与输出功率的关系。模拟结果表明:在全年大部分时期,槽式集热器的南-北轴跟踪效率优于东-西轴跟踪;在相同条件下,采用蒸发温度高的有机工质,系统的输出功率和循环效率较好;对于不同的运行参数,存在一个最佳循环冷却水流量,使系统的净输出功率最大。
A typical parabolic trough solar thermal generation with organic rankine cycle model has been developed using the software TRNSYS in this paper. Meteorological data of city Xi＇an is used for the model＇s input. Then the effects of different tracking modes, organic fluids and the mass flow rate of the cooling water on the output power and efficiency of the model are analyzed. It is shown that choosing the N-S tracking model makes the generation having a higher efficiency during the period from March to October. The efficiency of the generation using organic fluids which have a high evaporating temperature is higher than using the organic fluids which have a lower evaporating temperature under the same operating condition. There is a best mass flow rate of the cooling water which makes the generation having the most net output power under different operating condition.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2010年第10期1631-1634,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金重点项目(No.50736005)
国家重点基础研究发展计划资助(973项目)(No.2010CB227102)
