• 제목/요약/키워드: Pulse air jet

검색결과 32건 처리시간 0.047초

집진기의 공기소모량과 백 필터내의 압력전파에 대한 실험적 연구 (Experimental Investigation on Air Consumption and Pressure Wave Propagation inside A Filter Bag of A Dust Collector)

  • 정원락;홍성철
    • 한국산학기술학회논문지
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    • 제9권4호
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    • pp.886-891
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    • 2008

  • 이 연구는 필터 백을 사용하는 집진기에서 펄스밸브에 부착된 솔레노이드 밸브의 통전 시간과 공기소모량 사이의 관계를 실험적으로 규명하였으며 이 때 필터 백에 작용하는 압력파의 전달과정을 고찰하였다. 펄스당 공기소 모량이 집진기 운전비용의 주요 요소이므로 펄스제트의 전파과정을 관찰하고 압력파형과 공기소모량을 측정하였다. 또 주어진 조건하에서 필터 백의 길이의 영향을 고찰하고 효율적인 탈진작용을 할 수 있는 통전시간과 충격량 사이의 관계를 규명하였다 주어진 실험조건 범위에서는 통전시간이 짧을수록 더 큰 충격량을 얻을 수 있으며 동일한 통전 시간에 대하여는 여러 번의 짧은 펄스를 발생시키는 것이 더 효율적인 것으로 나타났다.

  • https://doi.org/10.5762/KAIS.2008.9.4.886 인용 PDF

Vibration control of a framed structure by an air-pulse actuator

  • Fujimoto, T.;Fengying, Cao;Mori, Y.
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2001년도 ICCAS
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    • pp.152.3-152
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    • 2001

  • This paper describes an application of an air-pulse actuator for vibration control of a framed structure. Dynamic characteristics of the prototype actuator that utilizes an air-jet reaction force pulsated by an electromagnetic valve were investigated to use it as a control actuator. Using a control law based on the sliding mode control theory, experiments of the vibration control were carried out. The experimental results verified the validity of the actuator performance.

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충격기류식 여과집진장치의 펄스간격 밀 분사거리에 따른 압력손실변화에 관한 기초 연구 (A Study on the Pressure drop Variance of Pulse interval, injection distance in Pulse Air Jet Type Bag Filter)

  • 서정민;최금찬;박정호
    • 한국환경과학회지
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    • 제13권3호
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    • pp.223-232
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    • 2004

  • The change of pressure drop according to the change in the inlet concentration, pulse interval, and injection distance of pulse air jet type bag filters, and the effect of venturi installation are as follows. The pressure drop with the range of 30 to $50mmH_2O$ varies according to the injection distance with 30, 50, 70, 90sec and the inlet concentration of venture built-in fabric filters. For the lower concentration of 0.5g/㎥ and 1g/㎥, the pressure $drop(\DeltaP)$ was stable 60 to 90minutes after operation. For the higher concentration of 3g/㎥, as $\DeltaP$ continues to go up, pulse interval should be set shorter than 30 seconds. The pressure drop with the injection distance of 1l0mm, when inlet dust concentration is 0.5g/㎥ or 1g/㎥, is 1.3 to 2 lower than with the injection distance of 50, 160, and 220mm, which means that the inflow amount of the secondary air by the instant acceleration is large. The injection distance of 2g/㎥ and 3g/㎥ has the similar pressure distribution. The higher inlet concentration is, the more important pulse interval is than injection distance. The pressure drop has proved to be larger when inlet concentration is lower and injection distance closer, on condition that the venturi is installed. The change in the pressure drop was smallest when injection distance was 50mm, followed by 220mm, 160mm, and 110mm.

  • https://doi.org/10.5322/JES.2004.13.3.223 인용 PDF KSCI

충격기류식 여과집진기에서 경험모델을 이용한 최소압력손실의 분사거리 예측 (The Prediction of Injection Distances for the Minimization of the Pressure Drop by Empirical Static Model in a Pulse Air Jet Bag Filter)

  • 서정민;박정호;임우택
    • 한국환경과학회지
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    • 제20권1호
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    • pp.25-34
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    • 2011

  • The new empirical static model was constructed on the basis of dimension analysis to predict the pressure drop according to the operating conditions. The empirical static model consists of the initial pressure drop term (${\Delta}P_{initial}$) and the dust mass number term($N_{dust}=\frac{{\omega}_0{\nu}_f}{P_{pulse}t}$), and two parameters (dust deposit resistance and exponent of dust mass number) have been estimated from experimental data. The optimum injection distance was identified in the 64 experimental data at the fixed filtration velocity and pulse pressure. The dust deposit resistance ($K_d$), one of the empirical static model parameters got the minimum value at d=0.11m, at which the total pressure drop was minimized. The exponent of dust mass number was interpreted as the elasticity of pressure drop to the dust mass number. The elasticity of the unimodal behavior had also a maximum value at d=0.11m, at which the pressure drop increased most rapidly with the dust mass number. Additionally, the correlation coefficient for the new empirical static model was 0.914.

  • https://doi.org/10.5322/JES.2011.20.1.25 인용 PDF KSCI