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


Author : Nasir Ul Rasheed Rather, S K Singh and Umair Nazir

Pages : 61-65, DOI:https://doi.org/10.14741/ijcet.v8i01.10890
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Abstract

The research paper deals with performance evaluation of a triple effect vapour absorption machine based on lithium bromide solution. The triple effect VAM at the National Institute of Solar Energy also has a provision of storage of heat and cool in PCM (phase change material) where excess heat from the solar field at peak hours is stored and the excess 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 the absorber. The required heat source temperature is usually above 80°C for single-effect machines and the COP is in the range of 0.6 to 0.7. In triple effect systems, COP of 1.7 has been demonstrated at 2100C.

Keywords: Vapour absorption machine, triple effect VAM, COP, performance, evaluation, Lithium Bromide, Thermodynamics, parabolic trough collectors, solar energy, Phase change material

Article published in International Journal of Current Engineering and Technology, Vol.8, No.1 (Jan/Feb 2018)

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