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Theoretical comparison of single stage and advanced absorption heat transformers operating with water/lithium bromide and water/Carrol mixtures
Author(s) -
Rivera W.,
Cardoso M. J.,
Romero R. J.
Publication year - 1998
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/(sici)1099-114x(199804)22:5<427::aid-er376>3.0.co;2-j
Subject(s) - lithium bromide , bromide , transformer , ethylene glycol , aquifer , thermodynamics , chemistry , analytical chemistry (journal) , materials science , groundwater , inorganic chemistry , physics , chromatography , geology , organic chemistry , geotechnical engineering , heat exchanger , quantum mechanics , voltage
A thermodynamic analysis was carried out to compare the theoretical performance of single stage, two stage and double‐absorption heat transformers operating with the water/lithium bromide and the water/Carrol mixtures, where Carrol is a mixture of lithium bromide and ethylene glycol [(CH 2 OH) 2 ] in the ratio 1:4·5 by weight. A mathematical model to predict the theoretical performance of single stage and the advanced heat transformers is also described. Coefficients of performance and gross temperature lifts are compared for the different heat transformers and plotted against the main temperatures of the system for both mixtures. The water/Carrol mixture showed in general to have a better performance than the water/lithium bromide mixture. © 1998 John Wiley & Sons, Ltd.