A Parametric Investigation on a Solar Dish-Stirling System

被引：0
|
作者：
Gholamalizadeh, Ehsan [1 ]
Chung, Jae Dong [1 ]
机构：
[1] Sejong Univ, Dept Mech Engn, Seoul 05006, South Korea
来源：
INTERNATIONAL CONFERENCE ON CIVIL, MECHANICAL AND MATERIAL ENGINEERING (ICCMME 2018) | 2018年 / 1973卷
关键词：
D O I：
10.1063/1.5041393
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The aim of this study is to analyze the performance of a solar dish-Stirling system. A mathematical model for the overall thermal efficiency of the solar-powered high-temperature-differential dish-Stirling engine is described. This model takes into account pressure losses due to fluid friction which is internal to the engine, mechanical friction between the moving parts, actual heat transfer includes the effects of both internal and external irreversibilities of the cycle and finite regeneration processes time. Validation was done through comparison with the actual power output of the "EuroDish" system. Moreover, the effects of dish diameter and working fluid on the performance of the system were studied. An increase of about 7.2% was observed for the power output using hydrogen as the working fluid rather than helium. Also, the focal distance for any diameter of dish was calculated.
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页数：5
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