Experimental study on the effect of ceiling mechanical smoke extraction system on transverse temperature decay induced by ceiling jet in the tunnel

Solvent extraction experiment of Sc was investigated.The extraction system consisted of 25% TBP+60% sulfonated kerosene +15% reforming agents. The results show that the extraction rates of Sc can reach up to 95%.The removing of Fe，Mn and Ti can be reached 99.1%, 99.4% and 99.5% respectively.The anti-extraction rates from organic phase with NaOH reach up to 99.7 % with effective separation from Fe，Mn and Ti.

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Experimental study on the longitudinal temperature decay beneath ceiling in ventilated tunnel fires

Journal of Thermal Analysis and Calorimetry ◽

10.1007/s10973-019-08692-w ◽

2019 ◽

Vol 139 (5) ◽

pp. 3179-3184 ◽

Cited By ~ 1

Author(s):

Lei Chen ◽

Fei Tang

Keyword(s):

Experimental Study ◽

Tunnel Fires ◽

Temperature Decay ◽

Longitudinal Temperature

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Experimental study on heat exhaust coefficient of transversal smoke extraction system in tunnel under fire

Tunnelling and Underground Space Technology ◽

10.1016/j.tust.2015.05.002 ◽

2015 ◽

Vol 49 ◽

pp. 268-278 ◽

Cited By ~ 25

Author(s):

Liang Yi ◽

Ran Wei ◽

Jinzhi Peng ◽

Tianxiao Ni ◽

Zhisheng Xu ◽

...

Keyword(s):

Experimental Study ◽

Extraction System

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The Influence of Various Exhaust Geometrical Parameters on the Effectiveness of an Aero-Engine Intake Thermal Anti-Icing System

Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration ◽

10.1115/94-gt-275 ◽

1994 ◽

Cited By ~ 1

Author(s):

S. J. Riley ◽

E. H. James

Keyword(s):

Experimental Study ◽

Geometrical Parameters ◽

Exit Plane ◽

Aircraft Engines ◽

Blowing Ratio ◽

Hot Air ◽

Maintenance Factors ◽

Temperature Decay ◽

Aero Engine ◽

Acoustic Liner

Anti-icing air from the internal nose cowl regions of aircraft engines exits via an exhaust slot to join the engine intake air upstream of the compressor. It is important that this still hot air be used efficiently downstream of the exhaust slot to effect heating of the downstream surface (acoustic liner) to facilitate the prevention of ice build-up at this point. To this end, various exhaust slot geometry designs have been investigated in an experimental study to provide guidelines to assist in this aim. The most significant variables were found to be assembly length, slot depth, exit plane width and exhaust angle. Surface heating effectiveness does not appear to be affected by “blowing ratio” differences between exhaust geometries. Equations are derived and suggested to predict the skin temperature decay downstream of the exhaust slot for a range of “blowing ratios” but the benefits in anti-icing performance must be considered ultimately against weight, cost, reliability, maintenance factors and in-service experience.

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Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010013955x ◽

1995 ◽

Vol 53 ◽

pp. 636-637

Author(s):

Norio Baba ◽

Norihiko Ichise ◽

Syunya Watanabe

Keyword(s):

Experimental Study ◽

Spherical Aberration ◽

Incident Beam ◽

Optical Parameters ◽

Beam Tilting ◽

Illumination Method ◽

Restoration Method ◽

Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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