Thermodynamic Analysis of Solar Absorption Cooling System

Jasim Abdulateef; Sameer Dawood Ali; Mustafa SabahMahdi

Authors

Jasim Abdulateef Mechanical Engineering Department, University of Diyala, 32001 Diyala, Iraq
Sameer Dawood Ali Mechanical Engineering Department, University of Diyala, 32001 Diyala, Iraq
Mustafa SabahMahdi ChemicalEngineeringDepartment, University of Diyala, 32001 Diyala, Iraq

Keywords:

Refrigeration, absorption, solar collector, entropy generation, irreversible losses

Abstract

This study deals with thermodynamic analysis of solar assisted absorption refrigeration system. A computational routine based on entropy generation was written in MATLAB to investigate the irreversible lossesof individual component and the total entropy generation stot of the system.The trend incoefficient of performance COP and stot with the variation of generator, evaporator, condenser and absorber temperatures and heat exchanger effectivenesses have been presented. The results show that, both COP and Ṡtot proportional with the generator and evaporator temperatures. The COP and irreversibilityare inversely proportional to the condenser and absorber temperatures. Further, the solar collector is the largest fraction of total destructionlosses of the system followed by the generator and absorber.The maximum destruction losses of solar collector reachup to 70 percent and within the range 6-14 percent in case of generator and absorber. Therefore, these components require more improvements as per the design aspects.