Open AccessDevelopment of solar and gas hybrid energy bed dryer with implementing multivariable expert system controls
Author(s) -
Budiya Surya Putra,
Abdul Waris,
Mohammad S. Iqbal
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/486/1/012066
Subject(s) - liquefied petroleum gas , solar energy , environmental science , waste management , combustor , gas burner , hybrid system , solar dryer , process engineering , automotive engineering , engineering , chemistry , computer science , electrical engineering , organic chemistry , machine learning , combustion
This study aims to develop a bed dryer prototype with optimum use of energy sources (solar and Liquified Petroleum Gas (LPG) hybrid). The material used in this study was fresh cocoa beans (Sulawesi 2 clones) purchased directly from Pattalassang Village, Tompobulu Subdistrict, Bantaeng Regency. The energy sources used were solar energy panels combined with an LPG burner. The tests conducted consisted of: a) control system test, b) drying test, and c) energy consumption test. In the drying test, the setting point was 60°C and two methods of energy supply were (1) Solar and LPG hybrid energy, (2) LPG energy only. The test results show that the control system works well, and the flame of the burner can be set automatically at low, medium, and high along with the temperature in the drying chamber and the collector. The temperature of the dryer was very stable, and no overshoot, The settling time is quite short, which is only 5 minutes. Hybrid furnace operation was more efficient (gas usage was about 64.8% compared to non-hybrid). Hybrid furnace operation consumed only 0.116 kg/hour of gas while non-hybrid operation consumed LPG of about 0.179 kg/hour.