Investigation of the performance of the dish/stirling solar thermal electricity system  

作　　者：HUANG Hu-lin HAN Dong 

机构地区：[1]Academy of Frontier Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

出　　处：《Journal of Energy and Power Engineering》2007年第1期8-14,共7页能源与动力工程（美国大卫英文）

摘　　要：A dish/stifling solar thermal electricity system consists of two parts： a dish solar concentrator and a Stifling engine. For optimizing the system, in this paper, the mathematical model for concentrator design was established and the effects of those design parameters of concentrator, such as the size and intensity of the focal point, the receiver temperature, on the efficiency of the Stifling engine and output power were numerically simulated. The results of the simulation revealed a close relationship between power and efficiency because of power losses, and there was a maximum for the engine efficiency and power with increasing solar radiation because there was a peak value of system efficiency with increasing receiver temperature. So, in view of our Stifling engine, the 450 rim angle and 6m focal length are optimal design for concentrator and the 800℃receiver temperature is best.

关 键 词：dish concentrator stifling engine intensity of focal point power output system efficiency 

分 类 号：TQ440.51[化学工程—化学肥料工业] TK513.1[动力工程及工程热物理—热能工程]