I D M Subrata Primary Author L O Nelwan Primary Author D Wulandani Primary Author mixed material bibliography 2017 en English

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Abstract. One of the main constraints of biomass fuel utilization in a small scale rice drying system is the operating difficulties related to the adjustment of combustion/feeding rate. Use of thermal storage may reduce the problem since combustion operation can be accomplished in a much shorter time and then the use of heat can be regulated by simply adjusting the air flow. An integrated biomass furnace-rock bed thermal storage with a storage volume of 540 L was designed and tested. There were four experiments conducted in this study. Charging was performed within 1-2 hours with a combustion rate of 11.5-15.5 kg/h. In discharging process, the mixing of air passing through the rock bed and ambient air were regulated by valves. Without adjusting the valve during the discharging process, air temperature increased up to 80o C, which is not suitable for rice batch drying process. Charging with sufficiently high combustion rate (14 kg/h) within 1 hour continued by adjusting the valve during discharging process below 60o C increased the discharge-charge time ratio (DCTR) up to 5.33 at average air temperature of 49o C and ambient temperature of 33o C.The efficiency of heat discharging was ranged from 34.5 to 45.8%. From the simulation, as much as 156.8-268.8 kg of rice was able to be dried by the discharging conditions NONE UPT. Perpustakaan UNIMUDA Sorong Universitas Pendidikan Muhammadiyah (UNIMUDA) Sorong P02088S My Library 2683 2021-08-13 12:24:33 2021-08-13 12:24:33 machine generated