Improving the Performances of a Solar Cylindrical Parabolic Dual Reflection Fresnel Miror (Experimental Part)

Improving the Performances of a Solar Cylindrical Parabolic Dual Reflection Fresnel Miror (Experimental Part)

Maria Hannane REGUE Toufik BENCHATTI Ahmed MEDJELLED Ahmed BENCHATTI

Laboratory of Mechanics, Department of Mechanics, University of Laghouat, Laghouat 03000, Algeria

Corresponding Author Email: 
maria.hanane@hotmail.fr
Page: 
171-178
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DOI: 
https://doi.org/10.18280/ijht.320124
Received: 
N/A
| |
Accepted: 
N/A
| | Citation

OPEN ACCESS

Abstract: 

The use of solar energy is not only related to its economic benefits, but also for its role in environment protection, for which we have to find solutions to pollution problems (Clean energy). In nature, there are several sources of renewable energy including the solar. Nowadays, thermal Solar is technically reliable and many achievements have been accomplished (solar water heaters, solar homes, solar collectors...etc.). For the realisation of a solar thermal concentrator, we have tried to minimise losses in order to increase performance. The work done focuses on an experimental study, which consists of converting solar radiation into thermal energy using a cylindrical parabolic solar concentrator. The experiment has been conducted on a sample prototype for concentration with an opening of 4m2. This prototype is set up in the laboratory of mechanics using local means. In the first experiment, we have tested the focal line of two cylindrically shaped iron receivers of 1.8 cm in diameter and 1m in length, located in the focal line the collector to accumulate concentrated solar power. The first receiver is covered by an auxiliary reflector (2nd reflector), the second with a free opening. The development of a simple theoretical model can estimate the global solar irradiance at the reflector. To measure the wind speed, we have used an anemometer. The other parameters have been measured, including the temperatures (thermocouple). The overall system is the subject of a numerical computer simulation. The software (myPCLab) is designed for this purpose. It controls the whole device and ensures the acquisition of certain parameters by means of a recorder communicating with a computer. In the second experiment, we have focused on the temperature differences (input - output) of water and oil (SAE 15W40 Total quartz), the temperature variation obtained is of the order of 75C°. The developed theoretical model involves a number of parameters such as the average monthly solar radiation that allows us to estimate the direct radiation at the reflector, the geometrical concentration and exchange of heat between the opening of the collector and the the receiver, allows the evaluation of the temperature at the latter. This model of concentration leads to levels of temperatures between 70C° to 200C°.

Keywords: 

solar energy, cylindrical parabolic concentrator double reflection, Thermal solar

1. Introduction
2. Operation of a Solar Collector Parabolic
3. Experimental Study
4. Experimental Procedure
5. Numerical Simulation on Lansys [10]
6. Conclusion
Nomenclature
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