Application of transparent insulation materials in improved flat-plate collectors and integrated collector storages
- Fraunhofer Inst. for Solar Energy Systems, Freiburg (Germany)
Within the work on new collector designs for the Central European climate, investigations on two different collector systems using Transparent Insulation Materials (TIMs) are presented in this paper. The thermal and optical properties of a polycarbonate honeycomb material are discussed with respect to the design of improved flat-plate collectors and integrated storage collectors with TIMs. Measurements on a collector with this material proved the good collector performance in the temperature range of 80 to 140C. But the collector is not stagnation proof, as the honeycombs start melting at 120C. The paper also describes a collector with newly developed, temperature resistant glass capillaries, with which a stagnation temperature of 261C was measured. Finally, new measurements of an integrated collector storage with polycarbonate honeycomb are reported which confirm the good performance of this simplified solar domestic hot water system.
- OSTI ID:
- 7149209
- Journal Information:
- Solar Energy (Journal of Solar Energy Science and Engineering); (United States), Vol. 49:5; ISSN 0038-092X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FLAT PLATE COLLECTORS
THERMAL INSULATION
PASSIVE SOLAR WATER HEATERS
POLYCARBONATES
OPTICAL PROPERTIES
THERMODYNAMIC PROPERTIES
RADIANT HEAT TRANSFER
THERMAL CONDUCTION
THERMAL ENERGY STORAGE EQUIPMENT
APPLIANCES
CARBON COMPOUNDS
CARBONATES
ENERGY TRANSFER
EQUIPMENT
HEAT TRANSFER
HEATERS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR WATER HEATERS
WATER HEATERS
141000* - Solar Collectors & Concentrators
140907 - Solar Thermal Utilization- Water Heating