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Heat and mass transfer studies on a compact bubble absorber in R134a-DMF solution based vapour absorption refrigeration system
Published in
2013
Volume: 36
   
Issue: 3
Pages: 1004 - 1014
Abstract
Experimental investigations have been carried out to study heat and mass transfer characteristics of Tetrafluoro ethane (R134a) in Dimethyl formamide (DMF) solution in a compact bubble absorber of vapour absorption refrigeration system of 1 TR capacity. Plate heat exchangers have been used as system components. Bubble absorption principle is employed in the absorber and hot water supplies heat to the generator. Effect of operating parameters such as circulation ratio, absorber and generator temperatures on heat and mass transfer effectiveness, overall heat transfer coefficient and volumetric mass transfer coefficient are investigated. It is found that heat and mass transfer effectiveness of absorber are better at lower circulation ratios and higher generator temperatures. Experimental results are compared with those obtained from numerical model developed earlier by the authors and the agreement is generally fair. From the experimental data, a correlation has been obtained for volumetric mass transfer coefficient, using multi-linear regression analysis. © 2012 Elsevier Ltd and IIR. All rights reserved.
About the journal
JournalInternational Journal of Refrigeration
ISSN01407007
Open AccessNo
Concepts (17)
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    ABSORPTION SYSTEM
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    Experimental investigations
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    Heat and mass transfer
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    Multi-linear regression
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    Overall heat transfer coefficient
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    PLATE HEAT EXCHANGERS
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    R134a
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    VOLUMETRIC MASS TRANSFER COEFFICIENT
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    ABSORPTION REFRIGERATION
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    Dimethylformamide
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    MASS TRANSFER
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    Optical correlation
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    Regression analysis
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    Vapors
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    Volumetric analysis
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    Water supply
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    Heat transfer