<p style="text-align: justify">U radu su prikazani rezultati ispitivanja energetske efikasnosti ravnih PSE. Cilj istraživanja je uvodenje i definisanje konstruktivnih, fizickih i radnih karakteristika ravnih,<br />niskotemperaturnih prijemnika sunceve energije sa aspekta povecanja energetske efikasnosti. Ispitana je mogucnost efikasnijeg prenosa toplote sa povr&scaron;ine apsorbera na radni medijum cime se smanjuju ukupni toplotni gubici.</p> / <p>In the paper are presented the result of energetic efficiency test of<br />flat plate solar collectors. The aim of test is introduction and<br />definition of constructive, physical and working characteristics of<br />flat plate low-temperature solar collectors from the incresing<br />energetic efficiency aspect. Possibility of higher efficiency of heat<br />transmision from the surface of absorber to the working fluid was<br />tested, with decresing of summary heat losses.</p>