Keywords: absorption refrigeration, simulation, COP, ECOP, dual cycle, ammonia-water, vapour liquid equilibrium, low temperature heat, exergy, exergetic coefficient of performance
Simulation of dual Ammonia Absorption Refrigeration cycle for effective utilisation of low temperature heat source
The aim of the work is to study absorption refrigeration cycle so that low temperature heat sources can be utilised for producing refrigeration. A dual cycle, which is a combination of two separate AAR cycles, is simulated, where the evaporator of the first cycle is coupled with the condenser or absorber of the second cycle. Such a dual cycle enables utilisation of low temperature heat source. Optimisation of the dual cycle was performed on the basis of COP and ECOP. Results reveal that a dual cycle with condenser-vaporator combination gives higher overall COP than a dual cycle with absorber-evaporator combination.