Single-stage and advanced absorption heat transformers operating with lithium bromide mixtures used to increase solar pond's temperature

Mathematical models of single-stage and advanced absorption heat transforme rs operating with the water/lithium bromide and water/Carrol (TM) mixtures were developed to simulate the performance of these systems coupled to a so lar pond in order to increase the temperature of the useful heat produced b y solar ponds. Plots of coefficients of performance and gross temperature l ifts are shown against the temperatures of the heat supplied by the solar p ond. The results showed that the single-stage and the double absorption hea t transformer are the most promising configuration to be coupled to solar p onds. With single-stage heat transformers it is possible to increase solar pond's temperature until 50 degreesC with coefficients of performance of ab out 0.48 and with double absorption heat transformers until 100 degreesC wi th coefficients of performance of 0.33. (C) 2001 Elsevier Science BN. All r ights reserved.