Modelling of a Stirling engine with parabolic dish for thermal to electric conversion of solar energy

2017 ◽  
Vol 132 ◽  
pp. 119-135 ◽  
Author(s):  
Germilly Barreto ◽  
Paulo Canhoto
Keyword(s):  
Solar Energy ◽  
Stirling Engine ◽  
Parabolic Dish

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.

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.

Thermal Model of the EuroDish Solar Stirling Engine

2007 ◽  
Vol 130 (1) ◽  
Author(s):  
Francisco J. García Granados ◽  
Manuel A. Silva Pérez ◽  
V. Ruiz-Hernández
Keyword(s):  
Experimental Data ◽  
Thermal Efficiency ◽  
Thermal Model ◽  
Stirling Engine ◽  
Good Qualitative Agreement ◽  
Parabolic Dish ◽  
Engine System ◽  
Work Model ◽  
Main Components ◽  
Comparison With Experimental Data

One parabolic dish—Stirling engine system—has been in operation at the Engineering School of Seville since March 2004. The unit, based on the Eurodish system, is one of the several Country Reference Units of the EnviroDish project. The system has achieved a maximum thermal efficiency (solar to electricity) close to 20% during operation. The analysis of the different parameters suggests a high potential for improvement. A thermal model of the main components of the engine package (cavity, receiver, and Stirling engine) can help to evaluate possible modifications of the system and identify the most promising ones. The development of such a thermal model and its comparison with experimental data gathered during this period are reported in this work. Model results exhibit a good qualitative agreement with the available measurements. However, the validation of the model will require measuring more parameters at the cavity, receiver, and engine.

Design Considerations for Heat-Pipe Solar Receivers

1990 ◽  
Vol 112 (3) ◽  
pp. 169-176 ◽  
Author(s):  
Douglas R. Adkins
Keyword(s):  
Solar Energy ◽  
Heat Pipe ◽  
Focal Point ◽  
Liquid Sodium ◽  
Working Fluid ◽  
Concentrated Solar Energy ◽  
Stirling Engines ◽  
Parabolic Dish ◽  
Parabolic Dish Concentrator ◽  
Solar Receiver

Heat pipes are being developed to transfer solar energy from the focal point of a parabolic dish concentrator to the working fluid of Stirling engines. With these receivers, concentrated solar energy that is absorbed on the concave surface of a dome is removed by the evaporation of liquid sodium on the convex side of the dome. Vaporized sodium then condenses on an engine’s heater tubes and transfers energy to the working fluid of the engine. The condensed sodium returns to the absorber surface where it is redistributed across the dome by the capillary action of a wick. Issues concerning the flow of sodium in a heat-pipe solar receiver are investigated in this paper. A comparison is made between various wick options, and general issues concerning the design of heat-pipe receivers are also discussed.

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