Model/experiment comparisons for TES (thermal energy storage) in phase-change materials (PCM's)
- Union Carbide Corp.
Melting and freezing experiments were made with paraffin wax, used as a PCM for potential TES applications, in a laboratory apparatus designed for high-precision measurements of temperature profiles and phase boundaries. The experiments were carried out under the conditions of minimum natural convection. A microcomputer system was used to control the temperature in the heating and cooling coils and to collect average and standard deviation values from eight thermocouples. The measured temperature distributions were compared with those predicted from five different mathematical models describing heat transfer processes in PCM's. Each of the models was reliable if the solid thermal conductivity was about three times that of the liquid. The Plexiglas wall of the device effectively transferred heat around the wax, creating an observed bending of the phase front at the wall. Experiments were also made with calcium chloride hydrate as PCM.
- OSTI ID:
- 6473025
- Report Number(s):
- CONF-791108-
- Journal Information:
- 72nd AIChE Annu. Meet. Prepr.; (United States), Journal Name: 72nd AIChE Annu. Meet. Prepr.; (United States) Vol. 85B
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thermal behavior of mixtures of perlite and phase change material in a simulated climate
Heat transfer enhancement for thermal energy storage using metal foams embedded within phase change materials (PCMs)
Related Subjects
250600* -- Energy Storage-- Thermal
ALKANES
COMPARATIVE EVALUATIONS
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
DATA
ENERGY STORAGE SYSTEMS
ENERGY SYSTEMS
ENERGY TRANSFER
EXPERIMENTAL DATA
FREEZING
HEAT TRANSFER
HEATING
HYDROCARBONS
INFORMATION
MATERIALS
MATHEMATICAL MODELS
MELTING
NUMERICAL DATA
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARAFFIN
PHASE CHANGE MATERIALS
PHASE TRANSFORMATIONS
TEMPERATURE DISTRIBUTION
TESTING
WAXES