Experimental evaluation of a single-stage heat transformer operating with the water/Carrol (TM) mixture

This paper describes experimental results obtained with a single-stage heat transformer (SSHT). Many combinations of fluid pairs have been proposed al though only the water/lithium bromide mixture has been widely used. The exp erimental work was done using the water/Carrol(TM) mixture, where Carrol(TM ) is a mixture of LiBr and ethylene glycol [(CH2OH)(2)] in the ratio 1:4.5 by weight. Flow ratios, gross:temperature lifts, useful heat, and coefficie nts of performance are plotted for the heat transformer vs temperatures and solution concentrations. Because the water/Carrol(TM) mixture has higher s olubility than water/lithium bromide and high experimental values are obtai ned for the gross temperature lift, it is a preferred mixture. (C) 1999 Els evier Science Ltd. All rights reserved.