Design and Fabrication of Gamma-Type Stirling Engine on Parabolic Dish of Solar Concentrator by a Compression Ratio Method

2016 ◽  
Vol 851 ◽  
pp. 383-388 ◽  
Author(s):  
Khanuengchat Saenyot ◽  
Kitsakorn Locharoenrat ◽  
Sarai Lekchaum
Keyword(s):  
Compression Ratio ◽  
Solar Collector ◽  
Total Pressure ◽  
Weather Conditions ◽  
Stirling Engine ◽  
Ratio Method ◽  
Solar Concentrator ◽  
External Work ◽  
Parabolic Dish ◽  
Solar Tracker

In this article, we have designed and fabricated the gamma-type Stirling engine based on the compression ratio technique. This engine is attached on a parabolic dish of a solar collector. The engine shows a good performance in terms of compression ratio, external work, total pressure, and engine’s speed. Our engine offers the thermal efficiency of 30.59 % so that it can reach the output mechanical power of 0.934. The temperature difference of 137 K can maintain very well for the heat collection of the solar collector even when the weather conditions are poor. Furthermore, our materials are environmentally friendly and this design is expected to be in the applications of the solar tracker in the future.

scholarly journals Study on a Mid-Temperature Trough Solar Collector with Multisurface Concentration

2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Zhengliang Li ◽  
Mingxian Chen ◽  
Husheng Meng ◽  
Zehui Chang ◽  
Hongfei Zheng
Keyword(s):  
Solar Collector ◽  
Tracking System ◽  
Tracking Error ◽  
Weather Conditions ◽  
Multiple Reflection ◽  
Solar Concentrator ◽  
Deviation Angle ◽  
Solar Concentrators ◽  
Collecting Efficiency

A new trough solar concentrator which is composed of multiple reflection surfaces is developed in this paper. The concentrator was analyzed firstly by using optical software. The variation curves of the collecting efficiency affected by tracking error and the deviation angle were given out. It is found that the deviation tolerance for the collector tracking system is about 8 degrees when the receiver is a 90 mm flat. The trough solar concentrators were tested under real weather conditions. The experiment results indicate that, the new solar concentrator was validated to have relative good collecting efficiency, which can be more than 45 percent when it operated in more 145°C. It also has the characteristics of rdust, wind, and snow resistance and low tracking precision requirements.

ANALYSIS OF A SOLAR PARABOLIC DISH STIRLING ENGINE USING BRAZILIAN NORTHEAST SOLARIMETRIC DATA

2018 ◽  
Author(s):  
Felipe Pinheiro Maia ◽  
Nícolas M. F. T. S. Araújo ◽  
Gabriel Ivan Medina Tapia
Keyword(s):  
Stirling Engine ◽  
Parabolic Dish ◽  
Brazilian Northeast

Stirling Engine Technology for Parabolic Dish-Stirling System Based on Concentrating Solar Power (CSP)

2015 ◽  
Vol 785 ◽  
pp. 576-580 ◽  
Author(s):  
Liaw Geok Pheng ◽  
Rosnani Affandi ◽  
Mohd Ruddin Ab Ghani ◽  
Chin Kim Gan ◽  
Jano Zanariah
Keyword(s):  
High Efficiency ◽  
Combustion Engine ◽  
Renewable Energy Sources ◽  
Stirling Engine ◽  
Energy Sources ◽  
Heat Engines ◽  
Stirling Engines ◽  
Parabolic Dish ◽  
Mechanical Devices ◽  
And Control

Solar energy is one of the more attractive renewable energy sources that can be used as an input energy source for heat engines. In fact, any heat energy sources can be used with the Stirling engine. Stirling engines are mechanical devices working theoretically on the Stirling cycle, or its modifications, in which compressible fluids, such as air, hydrogen, helium, nitrogen or even vapors, are used as working fluids. When comparing with the internal combustion engine, the Stirling engine offers possibility for having high efficiency engine with less exhaust emissions. However, this paper analyzes the basic background of Stirling engine and reviews its existing literature pertaining to dynamic model and control system for parabolic dish-stirling (PD) system.

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