USE OF LOW-TEMPERATURE ENERGY-SOURCES IN AQUA-AMMONIA ABSORPTION-REFRIGERATION SYSTEMS

In this study, the use of low temperature (85-110 degrees C) energy so urces in ammonia-water absorption refrigeration systems was investigat ed, and a thermodynamic analysis of the ARS was performed. The system consists of the condenser (drum), evaporator, absorber (drum), pump ex pansion valves, reboiler, distillation column (top, bottom, feed) with refrigerant and mixture heat exchangers. Using the mathematical model , the system variations of circulation ratio and coefficient of perfor mance of the cycle with design and working parameters are obtained. Th e results are compared with results given in the literature, and optim um working conditions are determined. (C) 1997 Elsevier Science Ltd.