Wyniki wyszukiwania - BazTech

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Technical and organizational and legal conditions relating to the power supply of a railway vehicle equipped with automatic train control system

Jacyna M., Kukulski J., Gołębiowski P., Jasiński S., Wychowański W.

Journal of KONES

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2018

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Vol. 25, No. 4

533--545

EN

Railway transport is considered the most environmentally friendly. However, taking into account all factors, (including point pollution associated with the production of energy necessary for the movement of electric traction vehicles); this position is attractive, but a little less. Therefore, it is necessary to ensure that the amount of energy produced for railway transport is sufficient, but the lowest as possible. Creating new systems whose components for correct operation require a supply of electricity, they should be designed in such a way as to consume as little energy but meeting a series of standards. The aim of the article is to review selected requirements for the power supply of a railway vehicle equipped with automatic train control devices and identification of energy demand in the scope of supplying the rmCBTC on-board system, which is being developed by Rail-Mil Computers Company from Warsaw and the Faculty of Transport of the Warsaw University of Technology. The article presents an analysis of formal and legal requirements in the field of traction vehicles. Reference was made to the list of the Office of Rail Transport and the standards not included in it − PN-EN 50155, PN-EN 61000-6 and PN-EN 50125-2. Energy requirements in the field of traction vehicles equipped with an automatic train control system have been identified − e.g. voltage range of the on-board system, permissible decays, voltage dips, disturbances and environmental requirements. The energy requirements for the rmCBTC on-board system were also identified.

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Power characteristics of unsteadily rotating Rushton turbine in aerated vessel

Woziwodzki S., Broniarz-Press L.

Czasopismo Techniczne. Chemia

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2014

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R. 111, z. 2-Ch

155--164

EN

The paper presents an analysis of power requirements for unsteadily rotating Rushton turbine in an aerated vessel. The experiments have shown that the presence of gas phase in liquid results in reduction of power requirements. The effect of oscillation frequency on power requirements for F1 mixing mode was not observed while for FR mode power requirement was inversely proportional to oscillation frequency. The lowest relative power demand (RPD) was equal to 0.49, and the overall power requirements for unsteady mixing modes were higher in comparison to standard unidirectional mixing mode.

PL

W artykule przedstawiono analizę mocy mieszania turbiny Rushtona obracającej się ze zmienną częstością i kierunkiem obrotów. Zgodnie z oczekiwaniami obecność gazu sprzyja zmniejszeniu zapotrzebowania na moc. Dodatkowo analizowano wpływ częstotliwości zmian częstości obrotów. Stwierdzono, że wpływ ten jest uzależniony od charakteru nieustalonego ruchu mieszadła. W przypadku zmiennej częstości i kierunku obrotów mieszadła moc mieszania była odwrotnie proporcjonalna do częstotliwości oscylacji. Z kolei przy zachowaniu tego samego kierunku obrotów mieszadła nie odnotowano wpływu częstotliwości na moc mieszania.

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Badania mieszalnika z przegrodami niestandardowymi własnej konstrukcji

Szaferski W., Broniarz-Press L.

Inżynieria i Aparatura Chemiczna

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2010

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Nr 2

117-118

PL

W pracy przedstawiono wyniki badań wpływu kształtu niestandardowych przegród własnej konstrukcji, rodzaju mieszanej cieczy oraz wysokości zawieszenia mieszadła na nakłady energetyczne w procesie mieszania w zbiorniku ze standardową turbiną Rushtona. Pomiary wykonano w wodnych roztworach wysokocząsteczkowego poliakryloamidu (Rokrysol WF1) oraz w wodzie destylowanej.

EN

This paper reports the results of effect of the geometry of non-standard baffles of own construction, kind of liquid agitated and height of agitator mounting on the mixing energy consumption in a mixer equipped with the standard Rushton disc turbine. Aqueous solutions of high-molecular poly-acrylamide (Rokrysol WF1) and distilled water were used as liquid phase.

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Aspekty poboru mocy w rozdrabniaczach wielokrawędziowych

Macko M.

Inżynieria i Aparatura Chemiczna

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2006

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Nr 4s

103-104

EN

The power and energy consumption in size reduction processes in a multi-edge grinder is a result of simultaneously acting several factors. The grinding effect of drums or plates with holes is accomplished through cutting, impact, scraping and shearing. The multi-edge milling process involves the use of several pairs of wholes in a sequence. A measurement of grinding power via evaluation of mechanical and electrical energy consumption in order to achieve a better recognition of grinding process is proposed in the paper.