A second law analysis and entropy generation minimization of an absorption chiller
KAUST DepartmentWater Desalination and Reuse Research Center (WDRC)
Biological and Environmental Sciences and Engineering (BESE) Division
Water Desalination & Reuse Research Cntr
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AbstractThis paper presents performance analysis of absorption refrigeration system (ARS) using an entropy generation analysis. A numerical model predicts the performance of absorption cycle operating under transient conditions along with the entropy generation computation at assorted heat source temperatures, and it captures also the dynamic changes of lithium bromide solution properties such as concentration, density, vapor pressure and overall heat transfer coefficients. An optimization tool, namely the genetic algorithm (GA), is used as to locate the system minima for all defined domain of heat source and cooling water temperatures. The analysis shows that minimization of entropy generation the in absorption cycle leads to the maximization of the COP. © 2011 Elsevier Ltd. All rights reserved.
SponsorsThe authors express their gratitude to the following agencies for their financial support, namely (i) the A*STAR (Singapore Grant No. R265-000-287-305) and (ii) the World Class University (WCU) Program of Korea R-33-2009-000-10101660, Jeju National University, Korea.
JournalApplied Thermal Engineering