Abstract
In the field of refrigeration and air-conditioning, waste heat to energy using the absorption refrigeration cycle has been gradually familiar. Especially, the expectation has increased to the TFE/NMP as a working fluid that is able to be driven below the atmospheric pressure and under zero degrees Celsius as the next generation absorption working fluid. In the previous study, the performance analysis of the absorption refrigeration cycle with TFE/NMP as a working fluid was examined by the cycle simulation. Moreover the concentration and dilution model was constructed to change the solution concentration in the absorption cycle. In this study, in order to predict the generator outlet vapor concentration related to rectifying process which is necessary for the TFE/NMP, the calculation model which considered the heat and mass transfer was constructed and some calculations were made changing the solution flow rate, inlet concentration of solution, the heat transfer coefficient and the mass transfer coefficient in the generator. Results showed that the calculation model was effective to predict the outlet vapor and solution concentrations.
