Vejen, Niels Kristian1; Furbo, Simon1; Shah, Louise Jivan2
1 Department of Civil Engineering, Technical University of Denmark2 Department of Buildings and Energy, Technical University of Denmark
Theoretical and experimental investigations have elucidated how different changes in the design of the 12.5 m(2) HT flat-plate solar collector from the Danish company ARCON Solvarme A/S influence the solar collector efficiency and the yearly thermal performance. The collector is designed for medium and large solar heating systems. Based on the theoretical findings a prototype of an improved HT solar collector was built and tested side-by-side with the original HT solar collector. The improved HT collector makes use of a changed insulation material, an absorber with improved absorptance and emittance, and a changed antireflection treated glass cover. Calculations based on the measured efficiencies showed that the yearly thermal performance is increased by 23-37% at operation temperatures between 40degreesC and 80degreesC when using the improved HT collector. The cost of the collector was however only increased with about 5%. (C) 2004 Elsevier B.V. All rights reserved.
Solar Energy Materials and Solar Cells, 2004, Vol 84, Issue 1-4, p. 205-223
solar collector efficiency; incidence angle modifier; yearly thermal performance; glass cover with antireflection surfaces; absorber with improved absorptance and emittance
Main Research Area:
World Congress of the International-Solar-Energy-Society, 2004