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Objective . With the decreasing use of refrigerants with a high global warming potential, increasing efficiency refrigeration machines using natural working fluids is very urgent task. The CO2 booster refrigerant cycle may be optimal for fields commercial refrigeration, climate engineering and heat pumps, but needs to adapted regions hot climates. purpose study also systematize possible ways im...

This study aims experimentally to investigate the performance parameters of R134a and alternative R516A refrigerant in two evaporator ejector cooling system (DEES) at different air velocities evaporator#1. Firstly, tests were carried out with under steady-state conditions then repeated low GWP refrigerant. As R134a, higher capacity was achieved velocity values. When value 1.1, 1.7, 2.2, 2.7 m s...

The aim of this work is to carry out a thermoeconomic analysis of a single and double-effect LiBr/H2O absorption refrigeration system. The methodology of functional analysis with negentropy is used. The exergetic cost of the main product, the cooling cost, was calculated as a function of the exergy of the heat source. Two cases were analyzed for each system: the first considers a direct-fired s...