Parametric study of solar adsorption cooling machine under the climatic conditions of Algeria

Ghrici, Adenane; Benramdane, Mohammed; Ghernaout, Mea

Communication science et technologie
Volume 20, Numéro 1, Pages 9-18
2022-03-14

Parametric Study Of Solar Adsorption Cooling Machine Under The Climatic Conditions Of Algeria

Authors : Ghrici Adenane . Benramdane Mohammed . Ghernaout Mea .

Abstract

A parametric and comparative study was carried out for the simulation of the performance of the adsorption solar refrigeration system and under the climatic conditions of the region of Tlemcen (35.0 ° N / -1.5 ° E, 247m), Algeria. The performance considered in this study was the coefficient of performance COP of the system. The system considered is a solar adsorption cooling machine in its basic configuration. For this, a mathematical model representing the evolution of the solar irradiation and the ambient temperatures was developed and the Dubinin-Astakhov equation was adopted to describe the adsorption rate. We have analysed the influence of the working pair type in parallel with the solar collector area, the adsorption concentration rate, the operating temperatures including the evaporating and the condensing temperatures. The working pairs tested were the AC/methanol and the AC/R134a refrigerant. The temperatures and the solar irradiation profiles were obtained during one day for the four months studied December, April, July and October to analyse the effect of the climatic conditions and mainly the daily solar irradiation on the system performance. The results shows that the COP’s reached by the AC/methanol is higher than those reached by the AC/R134a.it was obtained also that the COP was sensitive the solar collector area and the adsorption rate.it decrease with increase in the solar collector area and increase with the increase in the adsorption rate. The COP was also slightly affected by the operating parameters: the evaporating and the condensing temperatures. The climatic conditions have proved that the COP is more suitable during the month of December and October than the April and July.