A model of an ammonia-water falling film absorber
Conference
·
OSTI ID:5487722
This paper describes a model of the absorption process in a falling film ammonia-water absorber. The model consists of two ordinary, first-order differential equations with suitable inlet and interface conditions. The model was validated by comparing its predictions to experimental data. The objective of the work was to define strategies to enhance the absorption process in order to downsize absorbers. It was found that in most situations of practical interest, the mass transfer process in the falling film controls the absorption rate. The possibility of water evaporation and migration in the absorber is discussed, outlining how it can degrade performance. 16 refs., 5 figs., 4 tabs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5487722
- Report Number(s):
- CONF-880128-3; ON: DE88004477
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
ABSORPTION
AMMONIA
COOLING SYSTEMS
DIFFERENTIAL EQUATIONS
ENERGY SYSTEMS
ENERGY TRANSFER
EQUATIONS
FILMS
HEAT TRANSFER
HYDRIDES
HYDROGEN COMPOUNDS
MASS TRANSFER
MATHEMATICAL MODELS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXYGEN COMPOUNDS
THIN FILMS
WATER
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
ABSORPTION
AMMONIA
COOLING SYSTEMS
DIFFERENTIAL EQUATIONS
ENERGY SYSTEMS
ENERGY TRANSFER
EQUATIONS
FILMS
HEAT TRANSFER
HYDRIDES
HYDROGEN COMPOUNDS
MASS TRANSFER
MATHEMATICAL MODELS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXYGEN COMPOUNDS
THIN FILMS
WATER