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The research paper deals with performance evaluation of a triple effect vapour absorption machine based on lithiumbromide solution. The triple effect VAM at the National Institute of Solar Energy also has a provision of storage ofheat and cool in PCM (phase change material) where excess heat from the solar field at peak hours is stored and theexcess cooling effect generated at part load is stored in different PCM chambers when no radiation is available,especially at night time. The water in this mixture is the absorbent or refrigerant and Lithium Bromide is theabsorber. The required heat source temperature is usually above 80°C for single-effect machines and the COP is in therange of 0.6 to 0.7. In triple effect systems, COP of 1.7 has been demonstrated at 2100C.

Performance evaluation and COP calculation of Triple effect vapour Absorption machine working on Solar Thermal energy