Levetid for solfangere i solvarmecentraler

The aim of the project is to measure the collector efficiency and investigate the state of a few old solar collectors for solar heating plants. The investigated collectors were produced by ARCON/Sunmark and have been in operation for many years.

The efficiency of the first HT solar collector which was tested at Vattenfall’s research institute in Sweden in 1983, will be measured. Further, solar collectors from the solar heating plants in Ottrupgaard and in Marstal will be investigated in the solar collector test facility at the Technical University of Denmark. Both the collector efficiencies and the incidence angle modifiers will be determined. The state of the collectors will also be investigated. The focus will be on corrosion in the absorber tubes. Based on the investigations the life time of the collectors, both for solar heating plants with constant flow rates as in Ry and with variable flow rates as in Marstal, will be estimated.