Theoritical Analysis of Nh3-H2o Refrigeration System Coupled With Diesel Engine: A Thermodynamic Study

Abstract

In this paper theoretical investigation of NH3-H2O refrigeration system running on waste heat extracted from diesel engine has been carried out. Thermodynamic property at each point of the proposed system has been calculated using related equations at that state. Heat transfer rate of various components and various performance parameters are also calculated using first law analysis and applying mass and energy balance. Here variations in generator temperature, condenser temperature, absorber temperature and evaporator temperature are examined and its effect on coefficient of performance and circulation ratio is observed. From the results obtained with the help of EES software and enthalpy concentration diagram of NH3- H2O it is observed that with increase in generator temperature coefficient of performance of the system increases and it also increases with increase in evaporator temperature but with increase in condenser and evaporator temperature its starts decreasing. Effect of circulation ratio is also analysed it observed that circulation ratio decreases with increase in generator temperature, evaporator temperature and absorber temperature while it increases with increase in generator temperature.