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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한기계학회 Journal of Mechanical Science and Technology Journal of Mechanical Science and Technology Vol.19 No.7
- 발행연도
- 2005.7
- 수록면
- 1,478 - 1,487 (10page)
이용수
초록· 키워드
오류제보하기
A small mixed-type turbine with a diameter of 19.9 mm has been substituted for a rotational part of pencil-type air tool. Usually, a vane-type rotor is applied to the rotational part of the air tool However, the vane-type rotor has some problems, such as friction, abrasion, and necessity of accurate assembly etc.,. These problems make the life time of the vane-type air tool short, but air tools operated by mixed-type turbines are free of friction and abrasion because the turbine rotor dose not contact with the casing. Moreover, it is assembled easily because of no axis offset. These characteristics are merits for using air tools, but loss of power is inevitable on a non-contacting type rotor due to flow loss, tip clearance loss, and profile loss etc.,. In this study, four different rotors are tested, and their characteristics are investigated by measuring the specific output power. Additionally, optimum nozzle location against the rotor is studied. Output powers are obtained through measured pressure, temperature, torque, rotational speed, and flow rate. The experimental results obtained with four different rotors show that the rotor blade shape greatly influences to the performance, and the optimum nozzle location exists near the mid span of the rotor.
목차
Abstract
1. Introduction
2. Rotor Blade Profile and Apparatus
3. Results and Discussions
4. Conclusions
Acknowledgments
References
참고문헌 (11)
참고문헌 신청
Balje, O. E. and Binsley, R. L., 1968, "Axial Turbine Performance Evaluation Part A - Loss Geometry Relationships," J. of Eng. for Power, pp.341~348.
Bohn, D., Drexler, Chr. and Emunds, R., 1993, "Experimental and Theoretical Investigations into the Non-uniform Flow of a Partial Admission Turbine with a Multistage Blading," VCR Kraftwerkstechnik 73, No.8, pp.610~608.
Bohn, D., Gier, J. and Ziemann, M., 1998, "Influence of the Cross-Over Channel Geometry on the Flow Equalization in Partial-Admission Turbines," VCR PowerTech 2, pp.49~54.
Boulbin, F., Hetet, J. F. and Chesse, P., 1994, "Non-steady Flow in the Partial Admission," VDl Berichte NR, 1109, pp.395~401.
Cho, S. Y. and Kim, E. S., 2003, "Study on Measuring the Performance of an Air Tool Operating at 100,000RPM Class," J. of Fluid Machinery, Vol.6, No.3, pp.44~50.
Bohn, D., Drexler, Chr. and Emunds, R., 1993, "Experimental and Theoretical Investigations into the Non-uniform Flow of a Partial Admission Turbine with a Multistage Blading," VCR Kraftwerkstechnik 73, No.8, pp.610~608.
Bohn, D., Gier, J. and Ziemann, M., 1998, "Influence of the Cross-Over Channel Geometry on the Flow Equalization in Partial-Admission Turbines," VCR PowerTech 2, pp.49~54.
Boulbin, F., Hetet, J. F. and Chesse, P., 1994, "Non-steady Flow in the Partial Admission," VDl Berichte NR, 1109, pp.395~401.
Cho, S. Y. and Kim, E. S., 2003, "Study on Measuring the Performance of an Air Tool Operating at 100,000RPM Class," J. of Fluid Machinery, Vol.6, No.3, pp.44~50.
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