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First Thermal and Fluids Engineering Summer Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

PERFORMANCE EVALUATION OF H2O-LiBr ABSORBER OPERATING WITH MICROPOROUS MEMBRANE TECHNOLOGY

DOI: 10.1615/TFESC1.mnt.012726
pages 1721-1732

M. de Vega
Universidad Carlos III de Madrid (UC3M), Avda. Universidad 30, 28911 Leganes, Madrid, Spain

M. Venegas
Unidad Asociada de Ingenieria Termicay de Fluidos CSIC-UC3M; Departamento de Ingenieria Termicay de Fluidos, Universidad Carlos III de Madrid, Avda. Universidad, 30, 28911 Leganes, Madrid, Spain

N. Garcia-Hernando
Universidad Carlos III de Madrid (UC3M), Avda. Universidad 30, 28911 Leganes, Madrid, Spain

U. Ruiz-Rivas
Carlos III University of Madrid, ISE Research Group, Thermal and Fluid Engineering Department, Avda. de la Universidad 30, 28911 Leganés, Madrid, Spain


KEY WORDS: absorption refrigeration, membranes, heat and mass transfer, miniaturization, modeling, absorber

Abstract

With the aim of reducing the size and increasing the energy efficiency of absorption chillers, the use of microporous membrane technology in these systems is at present under study. In particular, the simulation of a H2O-BrLi absorber using porous fibers for the heat and mass transfer between the solution and the vapor phase is considered in the present work. Heat and mass transfer process are modeled by means of selected correlations and data gathered from the open literature. Using the model developed, a simulation of the absorber is performed using typical operating conditions of absorption cooling chillers.

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