Development of an insulated glass solar thermal collector

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Giovannetti, F.; Kirchner, M.; Kliem, F.; Hoeltje, T.: Development of an insulated glass solar thermal collector. In: Energy Procedia 48 (2014), S. 58-66. DOI:

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Sum total of downloads: 64

Insulated glass solar thermal collectors result from the insertion of a solar absorber into the outer gap of a multiple glazed unit. Taking advantages from the manufacturing technology of the glass and window industry, a flexible and highly automated production as well as an easier and architecturally more appealing integration into the building envelope is expected. Ensuring long-term functionality, on the other hand, represents a very challenging development task due to high temperatures and to the thermally induced deformations of the solar absorber. The paper analyzes the behavior of this new kind of collector by means of theoretical calculations and experiments, focusing on both the performance and the reliability aspects. Efficiency measurements according to EN 12975 on prototypes with a slim design report specific values comparable to those of standard flat plate collectors (η0 = 0.78, a1 = 3.77 W/m2K, a2 = 0.011 W/m2K2 for a 50 mm thick, argon-filled prototype). Prolonged exposure to stagnation temperature and internal thermal shock-tests attest the durability of collector configurations featuring temperatureresistant components and suitable constructions, able to reduce and compensate the absorber deformation.
License of this version: CC BY-NC-ND 3.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2014
Appears in Collections:An-Institute

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pos. country downloads
total perc.
1 image of flag of Germany Germany 30 46.88%
2 image of flag of United States United States 12 18.75%
3 image of flag of No geo information available No geo information available 5 7.81%
4 image of flag of Italy Italy 3 4.69%
5 image of flag of China China 3 4.69%
6 image of flag of Vietnam Vietnam 2 3.12%
7 image of flag of Malaysia Malaysia 2 3.12%
8 image of flag of Belgium Belgium 2 3.12%
9 image of flag of Singapore Singapore 1 1.56%
10 image of flag of Russian Federation Russian Federation 1 1.56%
    other countries 3 4.69%

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