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

 
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1991 (EN)

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

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

Thermodynamics (EN)
Refrigerating Machinery (EN)
Coefficient of Performance (EN)
Refrigeration - Thermodynamics (EN)
Heat Exchangers (EN)
Mechanics (EN)
Interface Heat Exchangers (EN)
Energy & Fuels (EN)
Engineering, Mechanical (EN)


Heat Recovery Systems and CHP (EN)

English

1991 (EN)

11 (EN)
495 (EN)
6 (EN)
0890-4332 (EN)
504 (EN)
ISI:A1991GY73800004 (EN)

PERGAMON-ELSEVIER SCIENCE LTD (EN)




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