Kajian Performansi Pengering Surya Metode Tidak Langsung (Indirect Solar Dryer) Kolektor Plat Datar Bersirip

Abstract

Solar energy is an energy source that never runs out, so it becomes a potential energy source for a variety of needs. One use of solar enery is in drying. To increase the feasibility of solar energy can be done by using indirect solar dryer. This research is aim to study the performance of indirect solar dyer with finned flat plate collector with openings varying collector, to calculate the range of the average intensity of solar radiation, and average efficiency of solar collector that can be achieved and to study the factors of that influence. The main equipment to be used is a solar dryer with a drying chamber and solar collector. The solar collector consists of four layers, namely wood, styrofoam, rockwoll, and absorber plate. The variable change in this research is an aperture collector open 100%, open 15%, open 75%, closed 100%. This research done under the sun lasted from 09.00-17.00 WIB. The result retrieved intensity of solar radiation on average during the research consecutive to the variation open 100%, open 15%, open 75%, closed 100% is 390 W/m2 , 429 W/m2 , 376 W/m2 , dan 359 W/m2 . The highest increase of plate temperature occurred in closed 100%. The highest efficiency of collector is in open 100%. The result shows the efficiency of collector influenced by intensity of solar radiation accepted by collector and the plate temperature at the collector.