Performance of double effect H2O–LiCl absorption refrigeration systems and comparison with H2O–LiBr systems, Part 1: Energy analysis

Autor: T.K. Gogoi, D. Konwar
Rok vydání: 2018
Předmět:
Zdroj: Thermal Science and Engineering Progress. 8:184-203
ISSN: 2451-9049
DOI: 10.1016/j.tsep.2018.08.008
Popis: In this article, exergy analysis is carried out to evaluate and compare the thermodynamic performances of the series, parallel and reverse parallel configurations of double effect H2O–LiCl vapour absorption refrigeration system (VARS). A comparison between double effect H2O–LiCl and H2O–LiBr systems is also provided to compare their exergetic performances under identical conditions. Initially, in Part 1 of this article, a detailed analysis was provided to identify the optimal operating conditions for the H2O–LiCl VARS configurations within the possible operational limits under certain fixed temperatures in the other VARS components. In this study, the exergy analysis is performed by evaluating the exergy efficiency and total system irreversibility of the double effect VARS configurations through parametric variations of component temperatures and distribution ratio. The present exergy based results conform well to the previously analyzed energy based results in Part 1. The optimal operating conditions, identified through energy analysis in Part 1, with respect to maximum COPs are almost identical with the ones corresponding to maximum exergy efficiencies and minimum total system irreversibility. Further, the exergy based performance comparison between the double effect H2O–LiCl and H2O–LiBr systems confirm superior performances of the H2O–LiCl systems not only with higher COP but also with higher exergy efficiency and comparatively lower total system irreversibility.
Databáze: OpenAIRE
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