Design and Development of Wire Mesh Type Solar Air Heater Unit

The Wire mesh type solar air heater is constructed and investigated experimentally for thermal efficiency. The highest daily solar radiation obtained at 12.30 p.m. which was 780 W/m2. At the mass flow rate of 0.00811 kg/s. The highest ambient temperature was obtained at 1.00 p.m. i.e. 33.4Ã?ºC. In general, the input temperature was found to be increasing from the morning to afternoon and then it is decreasing with little fluctuation during evening. The maximum temperature difference ÃŽâ??T was 40Ã?°C at 2.00 p.m. The maximum efficiency i.e. 82.81% was achieved at ambient temp. of 31.3Ã?ºC during the time of 1.30 p.m. with solar radiation of 658W/m2.