Characteristics of radiative energy collection by a fine-particle semitransparent suspension (FPSS) used as a vehicle and storage medium of a ''volume heat-trap'' type solar collector
The effects of suspension concentration, depth of layer and boundary optical condition on the rate and efficiency of radiative energy collection of a volume heat-trap type solar collector in which a FPSS is used as a heat vehicle and storage medium were studied experimentally and theoretically. Experiments were conducted for the stagnant layer of a graphite-diethylphthalate suspension, heated stepwise by a Xe-lamp from the upper side. The theoretically calculated results were in satisfactory agreement with the experimental data, and it was shown that the efficiency of radiative, energy collection in this type of solar collector could surpass easily that in the surface heat-trap collector. In addition, peak efficiency was observed at a certain suspension concentration, and the optical thickness at the peak was almost constant regardless of the depth of the suspension layer.
- Research Organization:
- Dept. of Chemical Engineering, Nagoya Univ.
- OSTI ID:
- 6562566
- Journal Information:
- Heat Transfer - Jpn. Res.; (United States), Vol. 15:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
GRAPHITE
THERMODYNAMIC PROPERTIES
PHTHALATES
SOLAR COLLECTORS
THERMAL ENERGY STORAGE EQUIPMENT
SUSPENSIONS
BOUNDARY CONDITIONS
HEAT STORAGE
HEAT TRANSFER FLUIDS
LAYERS
OPACITY
OPTICS
PARTICLE SIZE
PHASE CHANGE MATERIALS
RADIANT HEAT TRANSFER
THERMODYNAMICS
CARBON
CARBOXYLIC ACID SALTS
DISPERSIONS
ELEMENTAL MINERALS
ELEMENTS
ENERGY STORAGE
ENERGY TRANSFER
EQUIPMENT
FLUIDS
HEAT TRANSFER
MATERIALS
MINERALS
NONMETALS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SIZE
SOLAR EQUIPMENT
STORAGE
141000* - Solar Collectors & Concentrators
142000 - Solar Energy- Heat Storage- (1980-)
360603 - Materials- Properties