skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A computer model for simulation of absorption systems in flexible and modular form

Abstract

A computer code in a flexible and modular form developed for simulation of absorption systems makes it possible to investigate various cycle configurations with different working fluids. The code is based on unit subroutines containing the governing equations for the system's components. The equations are linked by a main program according to the user's specifications to form the complete system. The equations are solved simultaneously, and fluid properties are taken from a property data base. The code is user oriented and requires a relatively simple input containing the given operating conditions and the working fluid at each state point. The user conveys to the computer an image of his or her cycle by specifying the different subunits and their interconnection. Based on this information, the program calculates (1) the temperature, flow rate, concentration, pressure, and vapor fraction at each state point in the system and (2) the heat duty at each unit, from which the coefficient of performance may be determined. The program has been used successfully to simulate a variety of single-stage, double-stage, and dual-loop heat pumps and heat transformers, with the working fluids LiBr-H{sup 2}O,H{sub 2}O-NH{sub 3}, LiBr/H{sub 2}O-NH{sub 3}, LiBr/ZnBr{sub 2}-CH{sub 3}OH, and more. 23 refs., 10more » figs., 13 tabs.« less

Authors:
; ;
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Technion-Israel Inst. of Tech., Haifa (Israel). Faculty of Mechanical Engineering
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
5242145
Report Number(s):
ORNL/Sub-90-89673
ON: DE92000384
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; 36 MATERIALS SCIENCE; ABSORPTION REFRIGERATION CYCLE; COMPUTER CODES; COMPUTERIZED SIMULATION; HEAT PUMPS; AMMONIA; FLOW RATE; HEAT EXCHANGERS; HEAT TRANSFER; LITHIUM BROMIDES; METHANOL; MIXTURES; TEMPERATURE DEPENDENCE; WATER; WORKING FLUIDS; ZINC BROMIDES; ALCOHOLS; ALKALI METAL COMPOUNDS; BROMIDES; BROMINE COMPOUNDS; DISPERSIONS; ENERGY TRANSFER; FLUIDS; HALIDES; HALOGEN COMPOUNDS; HYDRIDES; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; LITHIUM COMPOUNDS; LITHIUM HALIDES; NITROGEN COMPOUNDS; NITROGEN HYDRIDES; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; SIMULATION; ZINC COMPOUNDS; ZINC HALIDES; 320106* - Energy Conservation, Consumption, & Utilization- Building Equipment- (1987-); 990200 - Mathematics & Computers; 360603 - Materials- Properties

Citation Formats

Grossman, G, Gommed, K, and Gadoth, D. A computer model for simulation of absorption systems in flexible and modular form. United States: N. p., 1991. Web. doi:10.2172/5242145.
Grossman, G, Gommed, K, & Gadoth, D. A computer model for simulation of absorption systems in flexible and modular form. United States. https://doi.org/10.2172/5242145
Grossman, G, Gommed, K, and Gadoth, D. 1991. "A computer model for simulation of absorption systems in flexible and modular form". United States. https://doi.org/10.2172/5242145. https://www.osti.gov/servlets/purl/5242145.
@article{osti_5242145,
title = {A computer model for simulation of absorption systems in flexible and modular form},
author = {Grossman, G and Gommed, K and Gadoth, D},
abstractNote = {A computer code in a flexible and modular form developed for simulation of absorption systems makes it possible to investigate various cycle configurations with different working fluids. The code is based on unit subroutines containing the governing equations for the system's components. The equations are linked by a main program according to the user's specifications to form the complete system. The equations are solved simultaneously, and fluid properties are taken from a property data base. The code is user oriented and requires a relatively simple input containing the given operating conditions and the working fluid at each state point. The user conveys to the computer an image of his or her cycle by specifying the different subunits and their interconnection. Based on this information, the program calculates (1) the temperature, flow rate, concentration, pressure, and vapor fraction at each state point in the system and (2) the heat duty at each unit, from which the coefficient of performance may be determined. The program has been used successfully to simulate a variety of single-stage, double-stage, and dual-loop heat pumps and heat transformers, with the working fluids LiBr-H{sup 2}O,H{sub 2}O-NH{sub 3}, LiBr/H{sub 2}O-NH{sub 3}, LiBr/ZnBr{sub 2}-CH{sub 3}OH, and more. 23 refs., 10 figs., 13 tabs.},
doi = {10.2172/5242145},
url = {https://www.osti.gov/biblio/5242145}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Aug 01 00:00:00 EDT 1991},
month = {Thu Aug 01 00:00:00 EDT 1991}
}