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Title: Simulation of a 20-ton LiBr/H{sub 2}O absorption cooling system

Abstract

The possibility of using solar energy as the main heat input for cooling systems has led to several studies of available cooling technologies that use solar energy. The results show that double-effect absorption cooling systems give relatively high performance. To further study absorption cooling systems, a computer code was developed for a double-effect lithium bromide/water (LiBr/H{sub 2}O) absorption system. To evaluate the performance, two objective functions were developed including the coefficient of performance (COP) and the system cost. Based on the system cost, an optimization to find the minimum cost was performed to determine the nominal heat transfer areas of each heat exchanger. The nominal values of other system variables, such as the mass flow rates and inlet temperatures of the hot water, cooling water, and chilled water, are specified as commonly used values for commercial machines. The results of the optimization show that there are optimum heat transfer areas. In this study, hot water is used as the main energy input. Using a constant load of 20 tons cooling capacity, the effects of various variables including the heat transfer ares, mass flow rates, and inlet temperatures of hot water, cooling water, and chilled water are presented.

Authors:
 [1];  [2]
  1. P.T. Boma Bisma Indra, Surabaya (Indonesia)
  2. Iowa State Univ., Ames, IA (United States). Dept. of Mechanical Engineering
Publication Date:
OSTI Identifier:
392438
Report Number(s):
CONF-960254-
Journal ID: ISSN 0001-2505; TRN: IM9647%%292
Resource Type:
Conference
Resource Relation:
Conference: Winter meeting of American Society of Heating, Refrigeration and Air Conditioning Engineers, Atlanta, GA (United States), 17-21 Feb 1996; Other Information: PBD: 1996; Related Information: Is Part Of ASHRAE transactions 1996: Technical and symposium papers. Volume 102, Part 1; PB: 1278 p.
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; AIR CONDITIONING; MASS TRANSFER; SENSITIVITY ANALYSIS; FLAT PLATE COLLECTORS; PERFORMANCE

Citation Formats

Wardono, B., and Nelson, R.M.. Simulation of a 20-ton LiBr/H{sub 2}O absorption cooling system. United States: N. p., 1996. Web.
Wardono, B., & Nelson, R.M.. Simulation of a 20-ton LiBr/H{sub 2}O absorption cooling system. United States.
Wardono, B., and Nelson, R.M.. Fri . "Simulation of a 20-ton LiBr/H{sub 2}O absorption cooling system". United States.
@article{osti_392438,
title = {Simulation of a 20-ton LiBr/H{sub 2}O absorption cooling system},
author = {Wardono, B. and Nelson, R.M.},
abstractNote = {The possibility of using solar energy as the main heat input for cooling systems has led to several studies of available cooling technologies that use solar energy. The results show that double-effect absorption cooling systems give relatively high performance. To further study absorption cooling systems, a computer code was developed for a double-effect lithium bromide/water (LiBr/H{sub 2}O) absorption system. To evaluate the performance, two objective functions were developed including the coefficient of performance (COP) and the system cost. Based on the system cost, an optimization to find the minimum cost was performed to determine the nominal heat transfer areas of each heat exchanger. The nominal values of other system variables, such as the mass flow rates and inlet temperatures of the hot water, cooling water, and chilled water, are specified as commonly used values for commercial machines. The results of the optimization show that there are optimum heat transfer areas. In this study, hot water is used as the main energy input. Using a constant load of 20 tons cooling capacity, the effects of various variables including the heat transfer ares, mass flow rates, and inlet temperatures of hot water, cooling water, and chilled water are presented.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Nov 01 00:00:00 EST 1996},
month = {Fri Nov 01 00:00:00 EST 1996}
}

Conference:
Other availability
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