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.

scholarly journals Temperature Control of the 25kW Parabolic Dish-Stirling Engine System

2016 ◽  
Vol 14 (3) ◽  
pp. 800 ◽  
Author(s):  
Liaw Geok Pheng ◽  
Mohd Ruddin Ab Ghani ◽  
Chin Kim Gan ◽  
Tole Sutikno
Keyword(s):  
Temperature Control ◽  
Stirling Engine ◽  
Parabolic Dish ◽  
Engine System

scholarly journals A Review of Parabolic Dish-Stirling Engine System Based on Concentrating Solar Power

2014 ◽  
Vol 12 (4) ◽  
pp. 1142 ◽  
Author(s):  
Liaw Geok Pheng ◽  
Rosnani Affandi ◽  
Mohd Ruddin Ab Ghani ◽  
Chin Kim Gan ◽  
Zanariah Jano ◽  
...  
Keyword(s):  
Solar Power ◽  
Stirling Engine ◽  
Concentrating Solar Power ◽  
Parabolic Dish ◽  
Engine System

scholarly journals Multiphase Stirling Engines

2009 ◽  
Vol 131 (2) ◽  
Author(s):  
Artin Der Minassians ◽  
Seth R. Sanders
Keyword(s):  
Mathematical Formulation ◽  
Surface Friction ◽  
Design Analysis ◽  
Stirling Engine ◽  
Multiphase System ◽  
Wire Screen ◽  
Stirling Engines ◽  
Solar Thermal Collectors ◽  
Engine System ◽  
Main Components

Analysis, design, fabrication, and experimental assessment of a symmetric three-phase free-piston Stirling engine system is discussed in this paper. The system is designed to operate with moderate-temperature heat input that is consistent with solar-thermal collectors. Diaphragm pistons and nylon flexures are considered for this prototype to eliminate surface friction and to provide appropriate seals. In addition, low loss diaphragm pistons, etched and woven-wire screen heat exchangers, and plastic flexures, as the main components of the system, are outlined. The experimental results are presented and compared with design analysis. Experiments successfully confirm the design models for heat exchanger flow friction losses and gas spring hysteresis dissipation. Furthermore, it is revealed that gas spring hysteresis loss is an important dissipation phenomenon for low-power Stirling engines and should be carefully addressed in design. Analysis shows that the gas hysteresis dissipation is reduced drastically by increasing the number of phases in a multiphase Stirling engine system. It is further shown that for an even number of phases, half of the engine chambers could be eliminated by utilizing a reversing mechanism within the multiphase system. The mathematical formulation and modal analysis of multiphase Stirling engine system are then extended to a system that incorporates a reverser. By introducing a reverser to the fabricated prototype, the system successfully operates in engine mode. The system proves its self-starting capability and validates the computed start-up temperature.

Solar parabolic dish Stirling engine system design, simulation, and thermal analysis

2016 ◽  
Vol 126 ◽  
pp. 60-75 ◽  
Author(s):  
A.Z. Hafez ◽  
Ahmed Soliman ◽  
K.A. El-Metwally ◽  
I.M. Ismail
Keyword(s):  
Thermal Analysis ◽  
System Design ◽  
Stirling Engine ◽  
Parabolic Dish ◽  
Engine System

Experimental Validation of Hybrid Photovoltaic-Thermal (PV/T) Greenhouse Dryer under Forced Mode

2011 ◽  
Vol 6 (6) ◽  
Author(s):  
P. Barnwal ◽  
G.N. Tiwari
Keyword(s):  
Experimental Data ◽  
Energy Balance ◽  
Air Temperature ◽  
Thermal Efficiency ◽  
Thermal Model ◽  
Experimental Validation ◽  
New Delhi ◽  
Climatic Parameters ◽  
Experimental Validations ◽  
Analytical Expressions

In this communication, a thermal model has been developed to predict the performance of hybrid photovoltaic-thermal (PV/T) greenhouse (roof type even span) dryer under forced mode. Based on energy balance, analytical expressions for temperatures of greenhouse air and produce (grape) surface as a function of design and climatic parameters have been developed. The analytical expressions for instantaneous and overall thermal efficiencies have also been developed. The experimental validations have also been carried out for greenhouse room air temperature, crop produce temperature and moisture evaporated etc. under composite climate of New Delhi (28°35'N, 77°12'E, 216 m above MSL). It has been observed that the developed thermal model was in well agreement with experimental data. It has been found that the overall thermal efficiency of hybrid PV/T greenhouse dryer varies from 33 percent to 37.8 percent.

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
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