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박일수(I. S. Park),옥철호(C. H. Ok) 한국동력기계공학회 2007 한국동력기계공학회 학술대회 논문집 Vol.- No.-
The purpose of this research is to study the torsional vibration characteristics of form shaft by experiment. An experimental investigated the rotational speed from 600rpm to 1500rpm through torsional vibration meter and two channel signal analyzer. The phenomenon of angular vibration displacement in small size had on stable region and that angular vibration velocity in big size had on stable region. Each points of angular vibration displacement in ф45 had on stable region and that angular vibration velocity in ф40 had on unstable region.
Disk가 부착된 회전축의 비틀림진동 특성에 관한 연구
박일수(I. S. Park) 한국동력기계공학회 2007 한국동력기계공학회 학술대회 논문집 Vol.- No.-
This paper presented experimental results of angular vibration velocity and angular vibration displacement for the rotating shaft which is rotates below 1500rpm. A laser system of non-contact method was used, and the model of torsional vibration was horizontal rotating shaft which was attached three disks with uniformed distance. ; The distance between the disks was fixed then, diameter of disks was changed. The measured angular displacement and angular velocity in their torsional vibration were analyzed. This results will provide information for lightening, exactness and the control about rotating shafts with variable shapes.
냉각 응축에 의한 음식물 쓰레기 처리장치 악취제거에 관한 실험적 연구
박일수(I. S. Park),김재돌(J. D. Kim),윤정인(J. I. Yoon) 한국동력기계공학회 2007 한국동력기계공학회 학술대회 논문집 Vol.- No.-
An experimental basis a use deodorize stink of food-waste in order to cooling condensation are considered in this paper. For the analysis and cooling condensation design, the governing equation of the deodorize system is derived. For a good performance of the system, the cooling condensation design, the cooling controller and the sensor control are included of the deodorize system. In order to reduce the exactly experimental dat. The experimental results are presented to show the validity of the control method.
급속 진공 동결 건조에 의한 드라이플라워 및 장치 특성 평가
김재돌(J. D. Kim),박일수(I. S. Park),윤정인(J. I. Yoon) 한국동력기계공학회 2007 한국동력기계공학회 학술대회 논문집 Vol.- No.-
The paper deals with the characteristics of dry flower and equipment by vacuum freezing dryer. The equipment needs to be operated by the technology related with super low temperature, high vacuum and dry. The vacuum freezing equipment used in this experiment consists of the super low temperature part, high vacuum measurement part and hot gas supplier. The temperature in the chamber, cold trap and hot gas injection was set as -30℃, -50℃ and -15℃. The time which reach to the steady state increased as the temperature in the chamber and cold trap. The operating characteristics of main part of experimental apparatus was changed according to the condition variation. Also, the condition of flower such as size and color after dry was superior comparing with natural dry.