Heat transfer additives for absorption cooling system fluids. Annual report, October 1989-September 1990
The work was directed towards developing an analytical and physical understanding of the various phenomena, reported in the public literature, that could effect the heat and mass transfer in the absorber of an absorption chiller. Emphasis during this first year of a 3 year study was placed on compiling a comprehensive property data base and doing some simple exploratory experiments. Significant accomplishments this past year include: compilation of the thermophysical properties of aqueous LiBr solutions; compilation of interfacial tension, solubility and vapor pressure for various surfactant candidates; completion of a number of flow visualization experiments using the rotating disk apparatus to investigate solid/liquid interface for aqueous LiBr, aqueous LiBr + n-octanol and aqueous LiBr + hexadecyltrimethyl ammonium bromide (CTAB); surface tension measurements for aqueous LiBr with and without additives and for solutions of water and n-octanol; flow visualization experiments to observe the surface patterns for a number of aqueous solutions and additions; summary of theories for enhanced heat and mass transfer with additives; and compilation of a falling film bibliography of open literature for (1) experimental measurements for gas absorption by sorbents, (2) numerical and analytical calculations for gas absorption by falling film sorbents and (3) enhanced heat and mass transfer mechanisms.
- Research Organization:
- Arizona State Univ., Tempe, AZ (USA). Center for Energy Systems Research
- OSTI ID:
- 5677627
- Report Number(s):
- PB-91-182998/XAB; ASU-CR-R-91030; CNN: GRI-5089-260-1874
- Resource Relation:
- Other Information: Sponsored by Gas Research Inst., Chicago, IL
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
HEAT TRANSFER FLUIDS
ADDITIVES
LITHIUM BROMIDES
THERMODYNAMIC PROPERTIES
REFRIGERATING MACHINERY
ABSORPTION REFRIGERATION CYCLE
ADSORPTION HEAT
COOLING
COOLING SYSTEMS
FLOW VISUALIZATION
HEAT PUMPS
HEAT TRANSFER
MASS TRANSFER
SOLUBILITY
SURFACE TENSION
WORKING FLUIDS
ALKALI METAL COMPOUNDS
BROMIDES
BROMINE COMPOUNDS
ENERGY SYSTEMS
ENERGY TRANSFER
ENTHALPY
FLUIDS
HALIDES
HALOGEN COMPOUNDS
LITHIUM COMPOUNDS
LITHIUM HALIDES
MACHINERY
PHYSICAL PROPERTIES
SURFACE PROPERTIES
420400* - Engineering- Heat Transfer & Fluid Flow
360603 - Materials- Properties