Experimental Study of a 2-stage Parabolic Dish-Stirling Engine in Thailand

Krissadang SOOKRAMOON; Pracha BUNYAWANICHAKUL; Bancha KONGTRAGOOL

Authors

Krissadang SOOKRAMOON Department of Mechanical Engineering, Faculty of Engineering, Srinakarinwirot University, Ongkharak, Nakhon Nayok 26120
Pracha BUNYAWANICHAKUL Department of Mechanical Engineering, Faculty of Engineering, Srinakarinwirot University, Ongkharak, Nakhon Nayok 26120
Bancha KONGTRAGOOL Department of Energy Technology, Faculty of Engineering, North-Chiang Mai University, Hangdong, Chiang Mai 50230

Keywords:

-stage parabolic dish, solar concentrator, solar-powered Stirling engine

Abstract

This paper conducted an experimental study of a laboratory-scaled 2-stage parabolic dish-Stirling engine. Experimental investigation of the system was performed, using an actual sun and a 2-stage parabolic dish concentrator as a heat source. Results from the performance testing by using a generator with a solar radiation and a double reflection parabolic dish solar concentrator in May 2014 indicated that the maximum concentrator efficiency is 26.291 %, the engine produced a maximum power of 0.359 W at 55.6 rpm, electrical power of 0.27 W, the generator efficiency at the maximum of 79.021 %, and the maximum overall brake thermal efficiency of 0.25033 %, approximately. The average heat input to concentrator is 1936.07 W and to the engine in an average of 180.28 W, respectively. The gross solar-to-electric conversion efficiency is 3.71 %.

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Author Biographies

Krissadang SOOKRAMOON, Department of Mechanical Engineering, Faculty of Engineering, Srinakarinwirot University, Ongkharak, Nakhon Nayok 26120

I work as an instructor at Valaya Alongkorn since 1998 in the position of assistance professor in mechanical technology.I am now a PHD.candidate in department of mechanical engineering faculty of engineering Srinakarinwirot university.

Pracha BUNYAWANICHAKUL, Department of Mechanical Engineering, Faculty of Engineering, Srinakarinwirot University, Ongkharak, Nakhon Nayok 26120

I work as an instructor at Valaya Alongkorn since 1998 in the position of assistance professor in mechanical technology.I am now a PHD.candidate in department of mechanical engineering faculty of engineering Srinakarinwirot university.

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