25 kW碟式太阳能热发电系统建模和性能分析

Modeling and performance evaluation of 25 kW dish-stirling solar thermal power generation

以一套25 kW碟式太阳能热发电系统为研究对象,对系统的各个部件进行数学建模并计算在典型工作条件下各个部件的热效率和效率;评估各个部件的性能,并串联成整个系统;分析整个碟式太阳能热发电系统的性能状况,并与实际碟式太阳能发电站的运行状况作比较,据此来判断模型的可行性,找出系统能量损失的关键环节,并为今后系统的改进提供依据。

A set of 25kW dish-stirling solar thermal power generation system was adopted as the research object.First of all,each part of the system was modeled mathematically.Thermal efficiency and exergy efficiency of each component were calculated under the typical working conditions.Secondly,the performance of each component was evaluated and connected in series to the whole system.Finally,the performance of the whole dish-stirling solar thermal power generation system was analyzed and compared with the actual dish solar power station operating conditions.Through these works,to judge the feasibility of the model,the key link of the system energy loss was found out,which could and provide the basis for the improvement of the system in the future.