The exergy investigation of a R 410 a mechanical vapor compression chiller for residential cooling

The high global warming potential refrigerant R410a is being phased out under the Kigali Amendment. However, it is still a common refrigerant in residential units for most developing nations. Thus to provide an insight into the potential areas of improvement for the cooling system and for future comparisons with environmentally friendly refrigerants, the first and second laws of thermodynamics is used to analyze a 2.0 kW chiller. The optimum charge is determined to be 0.84 kg. Exergy analysis highlights the high irreversibilities in the compressor. The exergetic efficiency illustrates the effects of evaporator temperature and reiterates the deduction of the optimum charge amount and areas for improvement.