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RISS 인기검색어
- 검색키워드
- 저자 : ( Gyeongmun Choi ) (검색결과 2 건)
- 무료
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Design and Performance Analysis of a Mechanical Baler Cutting Machine
( Deoghyun Lee ),( Junhyeon Lee ),( Frank Gyan Okyere ),( Gyeongmun Choi ),( Hyeontae Kim ) 한국농업기계학회 2019 한국농업기계학회 학술발표논문집 Vol.24 No.1
The use of agro waste for biomass production is on the rise in recent times. To achieve a high surface to volume ratio for efficient biomass production, the agro waste material needs to be chopped or cut into pieces. However machines for such purposes are not readily available. The aim of this research was to design and analyze the performance of a baler cutting machine. A baler cutting machine is used to cut and resize plants for biomass production. A3D Mechanical design software (CATIA) was used for the designing of the machine and was subsequently manufactured at the Woosong Engineering Ltd (Jinju, S. Korea). The machine is made of three (3) main parts; the cutting system, the power source and the control system. The cutting system comprises of a 0.05m shaft with six cutting blades spaced at 0.2m apart. The cutting blades is a 0.5m thick plate bent at angle of 30o to the horizontal with a v- shape end sharpened. The cutting blade is of length 0.3m and width 0.1m. The power source is a 3- phase electric motor which connects to the cutting system through a pulley with a belt. The control system is an automated control board that regulates the speed (ground and bed speed). To analyze the efficiency of the machine, corn stalks of various sizes were used. Three ground speeds were used. The theoretical and practical efficiency of the machine was 97% and 91.2% respectively. The machine gave an impressive output with the cutting system giving a good cutting orientation when the moisture content of the corn stalks were high (>60%). This was achieved when with a rotating speed of 1770 rpm.
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( Jayanta Kumar Basak ),( Fawad Khan ),( Frank Gyan Okyere ),( Elanchezhian Arulmozhi ),( Jihoon Park ),( Deokhyeon Lee ),( Junhyeon Lee ),( Gyeongmun Choi ),( Hyeon Tae Kim ) 한국농업기계학회 2019 한국농업기계학회 학술발표논문집 Vol.24 No.1
An experiment was conducted to determine the heating efficiency of Dimethyl ether (DME) burner and boiler machine in controlled greenhouse. In this study, we assessed the changing pattern of inside ambient environmental temperature by using two types of heating systems. This experiment was performed in three identical greenhouses (width 12 m, length 20 m, height 4 m). In greenhouse-1 (GH-1) and greenhouse-2 (GH-2), heating system was operated by DME burner and boiler machine respectively and no heating system was provided to greenhouse-3 (GH-3) which was left as control. We used DME gas as a fuel for DME burner and kerosene used for boiler machine. For carbon dioxide, temperature and humidity determination Lutron MCH-383SD electrochemical sensors were set at three different heights of greenhouses. Data were checked at 10-min intervals and recorded data were averaged for further analysis and interpretation. We operated the both system in 30 minutes after every one hour interval within a fixed rate from 10:30 to 17.30 in a day. Fuel cost was also estimated for cost benefit analysis of the two systems. The finding of the study showed that the heating performance of the both system was almost same. Average 7 days data on temperature during the experimental period showed that temperature was increased up to 10.7% and 12.4% treated with DME burner and boiler machine respectively compared to control condition during time intervals at 10:30 to 17.00 o’clock. However, the fuel cost for operating boiler was more than 20% compared to DME burner. Even though the current study found that gases produced by the DME burner was not only provide heating facility in greenhouse but also provide sufficient CO2 without any high concentration of toxic gases. Moreover, this study creates a scope for further experiment using DME gas burner in greenhouses to measure growth performance of different crops.
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