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The influence of falling film heat and mass transfer on the cycle of compression/absorption machines

Technical Report:

Abstract

We look at the operation of compression/absorption cycle machines in order to produce a high-temperature heat pump. The useful effect of the machine lies in the absorber during absorption of vapour with a high refrigerant content by the solution with a low refrigerant content. We create a thermodynamic model of falling film absorber, which includes a difference at equilibrium. This model involves a mass transfer at the interface, and a heat transfer in the film. Based on this model, we create a global model (with analytical integration) of the transfer equations, a local model (with numerical integration) and an intermediate model. The local model can be used for accurate plotting of the operating curve (the operating curve represents the changing thermodynamic state at the heart of the film). It also enables the calculation assumptions of the global model to be validated, or not. Finally, we perform a parametric study of the local model, which gives more exact information on the operation of the absorber. (author). 3 refs., 12 figs., 3 tabs.
Authors:
Publication Date:
Dec 01, 1992
Product Type:
Technical Report
Report Number:
EDF-93-NM-00022
Reference Number:
SCA: 320303; PA: FRC-94:000148; EDB-94:013033; NTS-94:008299; ERA-19:006871; SN: 94001122940
Resource Relation:
Other Information: PBD: Dec 1992
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; HEAT PUMPS; HEAT EXCHANGERS; FILM COOLING; COMPRESSION; ABSORPTION; HEAT TRANSFER; MASS TRANSFER; THERMODYNAMIC MODEL; PARAMETRIC ANALYSIS; WORKING FLUIDS; AMMONIA; NUMERICAL DATA; 320303; EQUIPMENT AND PROCESSES
OSTI ID:
10114298
Research Organizations:
Electricite de France (EDF), 92 - Clamart (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Other: ON: DE94728743; TRN: FR9400148
Availability:
OSTI; NTIS (US Sales Only)
Submitting Site:
FR
Size:
18 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Hivet, B. The influence of falling film heat and mass transfer on the cycle of compression/absorption machines. France: N. p., 1992. Web.
Hivet, B. The influence of falling film heat and mass transfer on the cycle of compression/absorption machines. France.
Hivet, B. 1992. "The influence of falling film heat and mass transfer on the cycle of compression/absorption machines." France.
@misc{etde_10114298,
title = {The influence of falling film heat and mass transfer on the cycle of compression/absorption machines}
author = {Hivet, B}
abstractNote = {We look at the operation of compression/absorption cycle machines in order to produce a high-temperature heat pump. The useful effect of the machine lies in the absorber during absorption of vapour with a high refrigerant content by the solution with a low refrigerant content. We create a thermodynamic model of falling film absorber, which includes a difference at equilibrium. This model involves a mass transfer at the interface, and a heat transfer in the film. Based on this model, we create a global model (with analytical integration) of the transfer equations, a local model (with numerical integration) and an intermediate model. The local model can be used for accurate plotting of the operating curve (the operating curve represents the changing thermodynamic state at the heart of the film). It also enables the calculation assumptions of the global model to be validated, or not. Finally, we perform a parametric study of the local model, which gives more exact information on the operation of the absorber. (author). 3 refs., 12 figs., 3 tabs.}
place = {France}
year = {1992}
month = {Dec}
}