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박선용 ( Sunyong Park ),이상열 ( Sangyeol Lee ),주상연 ( Sangyeon Joo ),조라훈 ( Lahoon Cho ),오광철 ( Kwagcheol Oh ),이서현 ( Seohyeon Lee ),정인선 ( Inseon Jeong ),이충건 ( Chunggeon Lee ),홍수진 ( Soojin Hong ),김석준 ( Seokjun 한국신·재생에너지학회 2017 신재생에너지 Vol.13 No.4
In this study, a mass reduction model during the torrefaction process was established and characteristics as fuel were analyzed. A naturally-dried pepper stem sample was crushed and thermogravimetric analysis was performed. Based on the experimental results, activation energy and frequency factor were induced and then the rate constant was driven. Mass decrease was predicted at 200℃, 230℃, 270℃ by mathematical model and compared with the experimental results. To investigate the properties of pepper stem as fuel, elementary analysis (EA) and Calorimetric measurement were performed. Result of elementary analysis, composition of carbon was increased from 40.11% at raw material to 57.3% at 270℃ 40min process, but case of oxygen and hydrogen, they were decreased from 35.12%, 5.7% at raw materials to 20.5%, 5.7% at 270℃ 40min process respectively. Caloric value was increased from 4,405 cal/g to 6,038 cal/g. But higher caloric value, less energy yield was shown by mass reduction during process.