Application of transparent insulation materials in improved flat-plate collectors and integrated collector storages

Journal Article · Sun Nov 01 04:00:00 EST 1992 · Solar Energy (Journal of Solar Energy Science and Engineering); (United States)

DOI:https://doi.org/10.1016/0038-092X(92)90109-N· OSTI ID:7149209

Rommel, M; Wagner, A ^[1]

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1. 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), Journal Name: Solar Energy (Journal of Solar Energy Science and Engineering); (United States) Vol. 49:5; ISSN SRENA; ISSN 0038-092X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140907 -- Solar Thermal Utilization-- Water Heating
141000* -- Solar Collectors & Concentrators
APPLIANCES
CARBON COMPOUNDS
CARBONATES
ENERGY TRANSFER
EQUIPMENT
FLAT PLATE COLLECTORS
HEAT TRANSFER
HEATERS
OPTICAL PROPERTIES
OXYGEN COMPOUNDS
PASSIVE SOLAR WATER HEATERS
PHYSICAL PROPERTIES
POLYCARBONATES
RADIANT HEAT TRANSFER
SOLAR COLLECTORS
SOLAR EQUIPMENT
SOLAR WATER HEATERS
THERMAL CONDUCTION
THERMAL ENERGY STORAGE EQUIPMENT
THERMAL INSULATION
THERMODYNAMIC PROPERTIES
WATER HEATERS