Keywords: solar refrigeration, water–lithium bromide, irreversibility, exergy destruction, exergy analysis, energy analysis, absorption cooling, solar collectors, thermodynamic models, modelling
Parametric study and exergy analysis of solar water–lithium bromide absorption cooling system
This paper presents the energy and exergy analysis of single–effect water–lithium bromide absorption cooling system driven by the heat supplied by a field of solar thermal collectors with a cooling capacity of 10 kW. The work is devoted to the study, the evaluation and distribution of the destroyed exergy for each component constituting this kind of system. The thermodynamic models have been derived using the first and second laws of thermodynamics. These models are employed in a computer program using the engineering equation solver (EES) software to perform the calculations and a sensitivity analysis to parameters is also presented. The results indicate that the contribution of some components to the overall exergy loss is very important. Exergy analysis also illustrates that the distribution of the destroyed exergy in the system between components depends strongly on the working temperatures.