• Journal of Biosystems Engineering
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• 제33권6호
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• pp.371-378
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• 2008

Bio-diesel applications seem to be extended due to bio-diesel policies and changes of agricultural environment. This study was conducted to develop a rapeseed reaping equipment attachable to the conventional combine. This paper was intended to report concept design, process and manufacturing of the prototype rapeseed reaping equipment. For concept design, physical properties of "SUNMANG", which is a typical rapeseed as bio-diesel materials, were considered. The designed prototype rapeseed reaping equipment consisted of wide-width plates, finger type knifes, side cutter knifes and drive equipments. The wide-width plate is 2.1 m wide, 0.7 m long, and 0.002 m thick. The finger type cutter knifes have 14.5 fingers, 30 knifes, and the specification was 7.6 cm of pitch, 8.3 cm of length and $21^{\circ}$ of cutting angle. The side cutter knifes consisted of a hydraulic pump, a hydraulic motor, a flow control and a relief valve, a hydraulic hose, a driving equipment and a reciprocating cutter knife. The 18 reciprocating cutter knifes were 137 cm long and knife pitch, knife length and cutting angle were 7.7 cm, 10.5 cm, and $18^{\circ}$. Prototype weight of the rapeseed reaping equipment was heavier by 272 kg when compared with the manual reaping equipments. Load distributions of left and right side showed 50% and 49%, and those of front and rear side showed 64% and 36%. Static turn-over angles in left and right of the prototype were $38.1^{\circ}$ and $38.7^{\circ}$, respectively. The designed prototype rapeseed reaping equipment was properly mounted at the front of a conventional combine.

• 한국환경농학회지
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• 제39권4호
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• pp.319-326
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• 2020

BACKGROUND: Measurement equipment was developed for inorganic nutrient concentration inside the hydroponic culture medium with several macro- and micro compositions, and applied for measuring the compositions of conventional medium. METHODS AND RESULTS: Before the equipment development, sonicator and heater were utilized to control temperature around of the module mixing with color reagents and target samples among the inorganic compositions. The measurement module and multi-sampler were also manufactured based on the COMS (Complementary Metal-Oxide Semiconductor) and installed inside the measurement equipment. Concentration of standard solution, value measured by the equipment, standard deviation or measured average value were used for estimating the accuracy and average recall of the equipment. Yamazaki solutions with EC of 0.5, 1.5, and 2.5 dS/m were offered to confirm the equipment accuracy and standard error. CONCLUSION: It was suggested that the developed equipment could be automatically applied for measurement with accuracy of over 96% and standard errors of less than 5% on 12 macro- and micro compositions such as a NO3-N, PO43- or Fe.

• 드라이브 ㆍ 컨트롤
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• 제12권4호
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• pp.105-111
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• 2015

• 생물환경조절학회지
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• 제26권4호
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• pp.242-248
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• 2017

작업 편이성을 높일 수 있는 원통형 종이포트를 일정한 크기로 생산하여 연속적 공급이 가능한 원통형 종이포트 제조장치를 개발하고, 장치의 성능시험을 수행하였다. 원통형 종이포트 제조장치는 상토공급부, 종이 공급부, 종이 접착부, 종이포트 절단부로 구성되어 종이포트제조를 위한 상토공급부터 종이포트 절단까지의 공정이 연속적으로 이루어지도록 하였다. 상토 함수율에 따른 적정 상토공급압력시험에서는 상토를 공급하는 진공압이 높을수록 종이포트의 경도와 가밀도가 높게 나타났으며, 수분 함수율이 높아질수록 경도와 가밀도는 증가하다가 낮아지는 경향을 나타내어 포트제조부로 상토를 공급하기 위한 적정 함수율 및 공기압은 50%~60%와 0.5 Mpa인 것으로 판단된다. 제조장치의 성능과 고형접착제에 의한 종이 접착시간을 고려하였을 때, 종이의 원통성형이 이루어지고 가이드부와의 유착없이 연속적인 공정이 이루어질 수 있는 적정 온도는 $150^{\circ}C^{\sim}160^{\circ}C$인 것으로 판단된다. 원통형 종이포트 절단칼날의 최적 절단각도를 구명하기 위한 시험에서는 절단 속도와 작업의 안전성을 고려하여 최소 기울기인 $30^{\circ}$에서 깨끗한 단면을 나타내는 일자칼날을 사용하는 것이 적합할 것으로 판단된다. 원통형 종이포트 제조장치의 성능시험에서 종이포트의 길이는 설정한 길이로 균일하게 제조되었으며, 종이접착 및 상토공급 등 준비 시간을 제외한 종이포트(직경: 40mm, 길이: 40mm) 제조 작업성능은 3300개/hr로 나타났다.

• 드라이브 ㆍ 컨트롤
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• 제17권1호
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• pp.68-75
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• 2020

• 드라이브 ㆍ 컨트롤
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• 제17권1호
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• pp.62-67
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• 2020

• 한국식품저장유통학회:학술대회논문집
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• 한국식품저장유통학회 2002년도 창립 10주년 기념 국제학술심포지움
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• pp.86-98
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• 2002

When the quality and cooking characteristics of wash free rice was compared with those of control milled rice during storage, smaller quality change during storage and more easy to cook was found in wash free rice than control. The wash free rice equipment manufactured in foreign country was carefully investigated and commercial wash free rice equipment with 1metric ton per hour capacity was made considering the characteristics of domestic rice cultivar. Modification of the equipment was made through the repeated field test, and the technique on wash free rice equipment was transferred to the RICETECH. These systems were manufactured in RICETECH will be exported to China next year.

• 한국생물환경조절학회:학술대회논문집
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• 한국생물환경조절학회 2003년도 추계학술대회 논문집
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• pp.209-212
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• 2003

• 한국식품저장유통학회:학술대회논문집
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• 한국식품저장유통학회 2002년도 창립 10주년 기념 국제학술심포지움
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• pp.72-85
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• 2002

When the quality and cooking characteristics of wash free rice was compared with those of control milled rice during storage, smaller quality change during storage and more easy to cook was found in wash free rice than control. The wash free rice equipment manufactured in foreign country was carefully investigated and commercial wash free rice equipment with 1metric ton per hour capacity was made considering the characteristics of domestic rice cultivar. Modification of the equipment was made through the repeated field test, and the technique on wash free rice equipment was transferred to the RICETECH. These systems were manufactured in RICETECH will be exported of China next year.

• Journal of Biosystems Engineering
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• 제33권6호
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• pp.396-403
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• 2008

Because thermal non-uniformity of transported agricultural products is mainly affected by cooling air flow pattern in the cold transport equipment, the analysis and control of flowfield is key to optimization of cold transport equipment. The objectives of this study were to estimate the effects of geometric and operating parameters of cold container on the air flow and heat transfer, and find the optimum design parameters for the low temperature level and its uniformity in given cold container with CFD simulations. Existences of ducts, gaps between pallets and geometries of exit as geometric parameters and fan blowing velocity as operating parameter were investigated. CFD simulations were carried out with the FLUENT 6.2 code. The result showed that optimum design condition was bulk loading with no duct, wall exit and 8.0 m/s of fan blowing velocity.