Test of flat solar collector

The research was performed on the flat solar collector. Tests were executed on the laboratory stand that contains solar simulator, collector, fluid circulator, heat exchanger and measuring system. Experiments were performed with glass and polycarbonate covers and without covers. Energy conversion factors on the collector with glass cover were higher than with polycarbonate cover and without covers. Fluid flow rate had less influence on the energy conversion factors of the solar collectorVytauto Didžiojo universitetasŽemės ūkio akademij