outdoor experiments on a once-through single glazed solar air heater with perforated metal absorber plate were conducted to determine the practical effect of absorber plate porosity as well as suction air flow rate on the collector thermal efficiency and its total pressure drop. three aluminum absorber plates were made perforated by drilling circular holes with different diameter/pitch ratios i...

the use of solar collectors in combination with heat pipes is rapidly growing in recent years.heat pipes, as heat transfer components, have undeniable advantages in comparison with other alternatives. the most important advantage is their high rate of heat transfer at minor temperature differences. although there have been numerous studies on the heat analysis or first thermodynamic analysis of...

Investigating the thermal and electrical gains efficiencies influence designed photovoltaic hybrid collector (PVT) under different weather conditions. The system was manufactured by attaching a fabricated cooling made of serpentine tubes to single PV panel connecting it an automatic controlling for measuring, monitoring, simultaneously collecting required data. A removable glass cover had been ...