Abstract
The weakness of the solution of flat-air solar collectors in the absence of a turbulence promoter has led researchers to seek other means to improve the performance of the collector. to improve the heat exchange in the air stream from the flat solar collector to the air is the creation of baffles or obstacles to give the longest possible flow path and create a large possible turbulence network. In this article, we studied an air flow around an obstacle field in a flat air solar collector, using the Ansys CFX calculator software, we make a digital 3 D similarity and we give results on the heat exchange in the flat air solar collector and the aim of this study is to show the effect of the obstacles for the fluid flow and the heat transfer in the fluid flow of the flat air solar collector.
Highlights
The improvement of the performances of the flat air solar collector is the interest of several researchers for that there are several works on the increase of the efficiency of the solar collector, I noted some work on this field of research
The author MA Bernier and al [1] studied the air flow in a solar air collector, they made an experimental study to test two air flow rates with different gauge pressure for three possible cases of air passage in the soliare sensor, the efficiency was made by three inlet and outlet mass flow and the enthalpy equilibrium method, they concluded that it is necessary to standardize the inlet gauge when testing them
A bibliographic study on previous work relating to flat air solar collectors enabled us to orient their research towards specific aspects still addressed in the literature
Summary
The improvement of the performances of the flat air solar collector is the interest of several researchers for that there are several works on the increase of the efficiency of the solar collector, I noted some work on this field of research. The author MA Bernier and al [1] studied the air flow in a solar air collector, they made an experimental study to test two air flow rates with different gauge pressure for three possible cases of air passage in the soliare sensor, the efficiency was made by three inlet and outlet mass flow and the enthalpy equilibrium method, they concluded that it is necessary to standardize the inlet gauge when testing them. In the study by Sari Hassoun Zakaria and al [2], is interested in improving the performance of a flat-air solar collector equipped with mini concentrators at the absorber level. The aim of this work is to make a digital simulation of the flow of the air studied, the evolution of the outlet temperature of the sensor. The article of Ole Arborg [3] presents on the use of the solar plane collector with air, he gave several study which presents the importance of the solar collector to produce the heat, the author gave several results like the graph which shows the relation between the energy consumption of the fan and the flow of air flowing into the flat air soliare collector, Power consumption of the fan for a particular air flow and Power consumption in relation to the solar radiation used
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