Performance test of air input control system for paddy grain drying using in-store dryer

Abstract

The control system is e series of a system that is very important in today's technology. Wherewith control system can make the human job easy and get a good result. This study used a controlled In-Store Dryer to dry 100 kg of grain with an initial moisture content of 17,77% to reach 14%. The study results using a control system, the average ambient temperature of the three tests ranged from 32°C to 33°C, and the RH ranged from 64,8 % to 68,6%. At the same time, the average temperature was 36,7°C to 37,5°C, and the average RH was 49,9% up to 64,7%. The drying airflow speed at the fan input is 6,2 m/s and at the chimney 9,2 m/s. Moisture content during drying differs for each thickness depending on the location, with an average drying rate of 0,92%. During drying, the moisture content varied for each consistency depending on the site, with the drying rate at an average ISD of 0.92% w/hr. total electrical energy consumption of 32.57 kWh and energy in biomass combustion 1,416,600 kJ. The quality during rice drying starts from the initial moisture content of 17.78% to reach the final moisture content of 10.44%.