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

Conference · Mon Jun 01 00:00:00 EDT 1987 · ASHRAE Trans.; (United States)

OSTI ID:6234589

Grossman, G; Gommed, K; Gadoth, D

A computer code has been developed for simulation of absorption systems in a flexible and modular form, which 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 systems's components. Those are linked together 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 database. 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 cycle by specifying the different subunits and their interconnection. Based on this information, the program calculates the temperature, flow rate, concentration, pressure, and vapor fraction at each state point in the system and 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/sub 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.

• OSTI ID: 6234589
• Report Number(s): CONF-870620-
• Journal Information: ASHRAE Trans.; (United States), Vol. 93:2; Conference: Annual meeting of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Nashville, TN, USA, 28 Jun 1987; Other Information: Technical Paper NT-87-29-2
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
COMPUTER CODES
HEAT EXCHANGERS
COMPUTERIZED SIMULATION
HEAT PUMPS
ABSORPTION REFRIGERATION CYCLE
AMMONIA
COEFFICIENT OF PERFORMANCE
LITHIUM BROMIDES
METHANOL
WATER
WORKING FLUIDS
ZINC BROMIDES
ALCOHOLS
ALKALI METAL COMPOUNDS
BROMIDES
BROMINE COMPOUNDS
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-)
990220 - Computers
Computerized Models
& Computer Programs- (1987-1989)