Studi Eksperimen Rumah Pengering Umbi Porang Sistem Hibrid (Energi Surya–Biomassa) dengan Variasi Tebal Irisan Chip

Abstract

This study aims to determine the effect of the thickness of the porang tuber chips on the distribution of temperature and humidity in the drying chamber of a hybrid system solar dryer (solar energy-biomass) on the drying rate of porang tubers. The research method is an experimental method in a drying chamber using ultra violet plastic to absorb radiant heat from sunlight and thermal energy from a biomass combustion furnace and then flowing into the drying chamber through a heat exchanger. The results showed that the average temperature in the drying chamber with porang tuber chip thickness of 3 mm, 4 mm and 5 mm, respectively, was 47.030C, 48.740C and 49.730C. The final moisture content of porang tuber chips after drying was 11.74% wb with the highest drying rate of 0.330 kg/hour and 5 hours of drying time at 3 mm thickness. Drying efficiency and drying housing efficiency were respectively obtained at 3 mm chip thickness, namely 17.86% and 6.06%.