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Title: Simulation of a double-effect LiBr/H{sub 2}O absorption cooling system

Abstract

Since commercially-available, double-effect, absorption cooling systems give relatively high performance for using solar energy or other medium-temperature sources, their performance was simulated and studied. To evaluate the cooling system performance, two objective functions were established: the system performance (COP) and the system cost. The system cost was used as the objective function to determine the optimum design of the system, while the COP was used to evaluate the effects of each variable on the system performance. The system optimization shows that there is an economic optimum heat-transfer area for each heat exchanger. Further study shows that this is a global minimum cost of the system. The best COPs that could be achieved by changing the heat-transfer areas and the inlet hot water temperature vary between 1.4 and 1.5. Higher COPs of approximately 1.6 were achieved if higher chilled water inlet temperatures or lower cooling water temperatures are used. These conditions are not desirable since higher chilled water inlet temperatures are not useful for cooling, and lower cooling water inlet temperatures are not usually available.

Authors:
 [1];  [2]
  1. P.T.Boma Bisma Indra, Surabaya (Indonesia). Technology Center
  2. Iowa State Univ., Ames, IA (United States)
Publication Date:
OSTI Identifier:
509323
Resource Type:
Journal Article
Resource Relation:
Journal Name: ASHRAE Journal; Journal Volume: 38; Journal Issue: 10; Other Information: PBD: Oct 1996
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; SOLAR COOLING SYSTEMS; ABSORPTION REFRIGERATION CYCLE; COMPUTERIZED SIMULATION; DESIGN; COEFFICIENT OF PERFORMANCE; COST

Citation Formats

Wardono, B., and Nelson, R. Simulation of a double-effect LiBr/H{sub 2}O absorption cooling system. United States: N. p., 1996. Web.
Wardono, B., & Nelson, R. Simulation of a double-effect LiBr/H{sub 2}O absorption cooling system. United States.
Wardono, B., and Nelson, R. Tue . "Simulation of a double-effect LiBr/H{sub 2}O absorption cooling system". United States.
@article{osti_509323,
title = {Simulation of a double-effect LiBr/H{sub 2}O absorption cooling system},
author = {Wardono, B. and Nelson, R.},
abstractNote = {Since commercially-available, double-effect, absorption cooling systems give relatively high performance for using solar energy or other medium-temperature sources, their performance was simulated and studied. To evaluate the cooling system performance, two objective functions were established: the system performance (COP) and the system cost. The system cost was used as the objective function to determine the optimum design of the system, while the COP was used to evaluate the effects of each variable on the system performance. The system optimization shows that there is an economic optimum heat-transfer area for each heat exchanger. Further study shows that this is a global minimum cost of the system. The best COPs that could be achieved by changing the heat-transfer areas and the inlet hot water temperature vary between 1.4 and 1.5. Higher COPs of approximately 1.6 were achieved if higher chilled water inlet temperatures or lower cooling water temperatures are used. These conditions are not desirable since higher chilled water inlet temperatures are not useful for cooling, and lower cooling water inlet temperatures are not usually available.},
doi = {},
journal = {ASHRAE Journal},
number = 10,
volume = 38,
place = {United States},
year = {Tue Oct 01 00:00:00 EDT 1996},
month = {Tue Oct 01 00:00:00 EDT 1996}
}