The equivalence of outdoor and mixed indoor/outdoor solar collector testing

摘要: Abstract An extension of the heat transfer analysis for a flat plate collector is presented in order to provide single equation incorporating effects solar heating cover, variations longwave atmospheric radiation and individual coefficients collector. By considering this it shown that can influence collection efficiency by up 3 per cent, absorption typical cover glasses also has an 2–3 cent. The magnitude factor ( F ′) decrease as temperature increases because function coefficients. In poor collectors effect alter much 10–15 sum these small “good” follows mixed indoor/outdoor test will produce quite representative results these. However, when are large, such case designs, then over-estimate efficiency.