Effect of the interface heat exchanger in composite NH3/H2OH2O/LiBr absorption-refrigeration systems

 
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Effect of the interface heat exchanger in composite NH3/H2OH2O/LiBr absorption-refrigeration systems (EN)

Antonopoulos, KA (EN)
Rogdakis, ED (EN)

N/A (EN)

In previous publications, a high-efficiency, composite absorption-refrigeration system has been proposed, which was composed of two co-operating absorption units using NH3/H2O and H2O/LiBr solutions, respectively. The heat output from the NH3/H2O unit was employed to drive the H2O/LiBr unit. In the present work, the real performance of the system is predicted and the effect of the heat exchangers connecting the two co-operating units is examined. Under certain assumptions, the real coefficient of performance and other characteristics of the system are expressed in terms of the ambient temperature and the effectiveness, ε{lunate} of the interface heat exchanger. It is found that the effect of the latter is considerable, being more pronounced at the higher values of ε{lunate}. For example, a system operating under usual conditions at 25°C ambient temperature, obtains a theoretical performance coefficient ranging from 108 to 209% for ε{lunate} ranging from 40% to its theoretical value of 100%. © 1991. (EN)

journalArticle

Refrigerating Machinery (EN)
Coefficient of Performance (EN)
Refrigeration - Thermodynamics (EN)
Heat Exchangers (EN)
Interface Heat Exchangers (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Heat Recovery Systems and CHP (EN)

1991


PERGAMON-ELSEVIER SCIENCE LTD (EN)



*Η εύρυθμη και αδιάλειπτη λειτουργία των διαδικτυακών διευθύνσεων των συλλογών (ψηφιακό αρχείο, καρτέλα τεκμηρίου στο αποθετήριο) είναι αποκλειστική ευθύνη των αντίστοιχων Φορέων περιεχομένου.