Experiment and analysis of practical-scale solar pond stabilized with salt gradient
- Kitami Inst. of Tech., Hokkaido (Japan)
A large-scale solar pond with salty water was constructed in the suburbs of Kitami in 1985. Its performance has been measured and analyzed by the authors after that. The solar pond body is circular of 44 m diameter, and the pond water is of 3 min total depth. After, 15 months, the depth of the salt gradient zone (S.G.Z.) was thinned by 10 cm in the top and by 20 cm in the bottom due to convection of the top and bottom zones. The temperature in the convective storage zone (C.S.Z.) reached 70C, its maximum, at the beginning of September in 1985, however, it was not as high in 1986 due to contamination of the pond water. The temperature of the storage zone was reduced from November to April due to ice covering on the pond surface. The collected heat yielded largely and the collection efficiency reached more than 30% in summer, but decreased to negative values in winter. The thermal performance of the solar pond was predicted by a simulation calculation, and the calculated result compared well with the measurements.
- OSTI ID:
- 5085904
- Journal Information:
- Solar Energy (Journal of Solar Energy Science and Engineering); (United States), Vol. 46:6; ISSN 0038-092X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
JAPAN
SOLAR PONDS
THERMAL ANALYSIS
AMBIENT TEMPERATURE
CONVECTION
DEPTH
DESIGN
EFFICIENCY
ENERGY BALANCE
HEAT EXCHANGERS
HEAT EXTRACTION
ICE
MATHEMATICAL MODELS
PERFORMANCE
SALINITY GRADIENTS
SIZE
STABILITY
TEMPERATURE GRADIENTS
THERMAL ENERGY STORAGE EQUIPMENT
ASIA
DEVELOPED COUNTRIES
DIMENSIONS
ENERGY TRANSFER
EQUIPMENT
HEAT TRANSFER
MASS TRANSFER
PONDS
SOLAR COLLECTORS
SOLAR EQUIPMENT
SURFACE WATERS
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