The influence of diffusion absorption refrigeration cycle configuration on the performance
2007
Abstract Based on a full thermodynamic model for ammonia–water diffusion absorption refrigeration (DAR) cycle with hydrogen as the auxiliary inert gas, the performance of two fundamental configurations of a DAR cycle, with and without condensate sub-cooling prior to the evaporator entrance, were studied and compared. The performances of the two cycles were examined parametrically by computer simulations. Mass and energy conservation equations were developed for each component of the cycles and solved numerically. It was found that the DAR cycle without condensate sub-cooling shows higher COP of 14–20% in compare with the DAR cycle with the condensate sub-cooling, but it occurs at higher evaporator temperature of about 15 °C.
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