単管熱交換器の動特性と共振現象 : 第3報, 過渡応答

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  • Dynamic Response and Resonance Phenomenon of a Single-Solid, Single-Fluid Heat Exchangers : Part III, Transient Response
  • タンカン ネツコウカンキ ノ ドウトクセイ ト キョウシン ゲンショウ 3

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This paper considers the indicial response of the temperature of the heat transfer surface and the bulk temperature of the fluid in a single-pipe heat exchanger. Step-wise disturbances imposed on the heat exchaner are : (i) the uniformly distributed, internal heat generation in the solid wall, (ii) the uniform wall temperature, (iii) the uniformly distributed, internal heat generation in the flowing fluid, (iv) the inlet temperature of the fluid, while a constant rate of heat is uniformly generated in the solid wall, and (v) the appropriate combinations of (i), (ii), (iii) and (iv). Analytical results have been obtained through the use of the Laplace transform technique. These results are presented such that the surface and fluid temperatures may be computed as a function of space and time, using three dimensionless mathematical functions.

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