A characteristic dimensionless time in phase change problems
Journal Article
·
· J. Sol. Energy Eng.; (United States)
In this paper a comparison is made between an approximate analytical solution and the numerical finite difference solution for the one dimensional solidification of a phase change material of finite size. The analytical model is not only capable of handling materials with a fixed melting temperature but is also extended to cope with materials with a transition range. In the approximate analytical model, use is made of the well known Neumann solution for the solidification in a semi-infinite region. A characteristic dimensionless time has been derived that can be used in a simplified description of the solidification of a phase-change material. With this description the testing of latent heat storage devices can be simplified and the results can also be used in simulation programs of solar energy installations with a latent heat storage.
- Research Organization:
- Delft Univ. of Technology, Applied Physics Dept., 2600 GA Delft
- OSTI ID:
- 6908099
- Journal Information:
- J. Sol. Energy Eng.; (United States), Journal Name: J. Sol. Energy Eng.; (United States) Vol. 108:4; ISSN JSEED
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
142000* -- Solar Energy-- Heat Storage-- (1980-)
ANALYTICAL SOLUTION
COMPUTER CODES
COMPUTERIZED SIMULATION
ENERGY STORAGE
EQUIPMENT
FINITE DIFFERENCE METHOD
HEAT STORAGE
ITERATIVE METHODS
LATENT HEAT STORAGE
MATERIALS
MATHEMATICAL MODELS
MELTING POINTS
NUMERICAL SOLUTION
ONE-DIMENSIONAL CALCULATIONS
PHASE CHANGE MATERIALS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SIMULATION
SIZE
SOLAR EQUIPMENT
SOLIDIFICATION
STORAGE
THERMAL ENERGY STORAGE EQUIPMENT
THERMODYNAMIC PROPERTIES
TIME DEPENDENCE
TRANSITION TEMPERATURE
142000* -- Solar Energy-- Heat Storage-- (1980-)
ANALYTICAL SOLUTION
COMPUTER CODES
COMPUTERIZED SIMULATION
ENERGY STORAGE
EQUIPMENT
FINITE DIFFERENCE METHOD
HEAT STORAGE
ITERATIVE METHODS
LATENT HEAT STORAGE
MATERIALS
MATHEMATICAL MODELS
MELTING POINTS
NUMERICAL SOLUTION
ONE-DIMENSIONAL CALCULATIONS
PHASE CHANGE MATERIALS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SIMULATION
SIZE
SOLAR EQUIPMENT
SOLIDIFICATION
STORAGE
THERMAL ENERGY STORAGE EQUIPMENT
THERMODYNAMIC PROPERTIES
TIME DEPENDENCE
TRANSITION TEMPERATURE