Practical Designing of an Agitator

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  • 撹拌機の実用的設計法
  • カクハンキ ノ ジツヨウテキ セッケイホウ

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Abstract

In designing an agitator we assume the effect of agitation to be expressed by the function of two terms, Q/V (volumetric discharge flow per unit volume) and P/V (power per unit tank volume).<BR>The heat transfer coefficient may be represented by the following general equation, NNu=f (Q/V, P/y)<BR>where the volumetric discharge flow rate is calculated by using Eq. (1).<BR>In the case where the fluid is water, Fig.4 & Eq. (4). are obtained by the use of Oldshue's general equation, Eq.(3), and these are employed for the computation of the heat-transfer coefficient of coil.<BR>The Mack et al's data on dissolution of benzoic acid in water may be expressed by Eq. (7) This above mentioned method may hold good in many commercial mixing instances in Japan. With an ordinary mixing tank, the values of Q/V & P/V fall within the following range. <BR>moderate mixing Q/V=3-5[1/min.] P/V=0.2-1 [ /m3] <BR>strong mixing Q/V=5-10 [1/min.] P/V=1-3 [ /m3]

Journal

  • Chemical engineering

    Chemical engineering 21 (2), 96-100, 1957

    The Society of Chemical Engineers, Japan

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