Experimentally determined correlations for solar collector/regenerator heat and mass transfer
Conference
·
OSTI ID:5467903
Local and overall performance measurements were taken on a prototype (11 x 11 m) solar collector/regenerator component of an open-cycle absorption refrigeration system. The data taken included local solution temperatures and inlet and exit concentrations. An interative method was used to solve a series of energy balances, over small finite distances in the flow direction, for local concentrations and local heat and mass transfer coefficients. Experimental convection coefficients were compared to those predicted by established correlations used in previous collector performance models. Established correlations underpredict heat transfer coefficients by a factor of 1.3 to 2.5 and underpredict mass transfer coefficients by a factor of 1.5 to 3.5. Local combined heat and mass transfer correlations were derived from the data. The correlations express nondimensional heat and mass transfer coefficients as functions of parameters describing forced convection, free convection heat transfer and free convection mass transfer. These correlations were integrated into a collector/regenerator performance model. The present model is a significant improvement over previous models and accurately predicts experimentally measured performance for a wide range of solar/meteorological conditions.
- OSTI ID:
- 5467903
- Report Number(s):
- CONF-851125-
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140909* -- Solar Thermal Utilization-- Miscellaneous Solar Applications-- (1980-)
141000 -- Solar Collectors & Concentrators
ABSTRACTS
ACCURACY
COMPARATIVE EVALUATIONS
CONVECTION
COOLING SYSTEMS
DATA ANALYSIS
DOCUMENT TYPES
ENERGY SYSTEMS
ENERGY TRANSFER
EQUIPMENT
FLUIDS
FORCED CONVECTION
FUNCTIONAL MODELS
HEAT TRANSFER
ITERATIVE METHODS
LEADING ABSTRACT
MASS TRANSFER
MATHEMATICAL MODELS
MEETINGS
METEOROLOGY
NATURAL CONVECTION
OPEN-CYCLE COOLING SYSTEMS
PERFORMANCE TESTING
PROCESS DEVELOPMENT UNITS
RADIATIONS
REFRIGERATORS
REGENERATORS
SOLAR COLLECTORS
SOLAR COOLING SYSTEMS
SOLAR EQUIPMENT
SOLAR RADIATION
SOLAR REFRIGERATORS
SOLAR REGENERATORS
STELLAR RADIATION
TEMPERATURE MEASUREMENT
TESTING
WORKING FLUIDS
140909* -- Solar Thermal Utilization-- Miscellaneous Solar Applications-- (1980-)
141000 -- Solar Collectors & Concentrators
ABSTRACTS
ACCURACY
COMPARATIVE EVALUATIONS
CONVECTION
COOLING SYSTEMS
DATA ANALYSIS
DOCUMENT TYPES
ENERGY SYSTEMS
ENERGY TRANSFER
EQUIPMENT
FLUIDS
FORCED CONVECTION
FUNCTIONAL MODELS
HEAT TRANSFER
ITERATIVE METHODS
LEADING ABSTRACT
MASS TRANSFER
MATHEMATICAL MODELS
MEETINGS
METEOROLOGY
NATURAL CONVECTION
OPEN-CYCLE COOLING SYSTEMS
PERFORMANCE TESTING
PROCESS DEVELOPMENT UNITS
RADIATIONS
REFRIGERATORS
REGENERATORS
SOLAR COLLECTORS
SOLAR COOLING SYSTEMS
SOLAR EQUIPMENT
SOLAR RADIATION
SOLAR REFRIGERATORS
SOLAR REGENERATORS
STELLAR RADIATION
TEMPERATURE MEASUREMENT
TESTING
WORKING FLUIDS