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Recent content by pvwander

  1. pvwander

    Compressor B31.3 or Sec. VIII

    This is my take on the subject. My actual experience for Compressor unit, Manufacturer has applied ASME U stamp for all the auxiliary process equipment integral to the unit like K.O. drum, Inter cooler & Bypass Cooler as part of the overall unit. They are stand alone equipment connected to the...
  2. pvwander

    Area Moment of Thin-Walled Cylinder, I

    @ Jamesl & Prex; Thank you very much for your replies. I now figured-out which (I) I computed. It is the Polar moment of Inertia, Ip = 2*pi*R^3*t (approx. only) for thin walled cylinder (t < 0.1R). The (I) which I am looking for is the inertia along X or Y axis. Since Ip = Ix + Iy and Ix is...
  3. pvwander

    Area Moment of Thin-Walled Cylinder, I

    Hello All, I was asked by my immediate superior to calculate the area moment of Inertia for the thin-walled cylinder to be used in the calculation of Wind axial stress, S = Mc / I. I am not sure if my calculated I is correct, I = 2 pi R^3 t, using the general eq. I = y^2 dA. Can anyone...
  4. pvwander

    Heat Exchanger U-bend Under External Pressure

    I forgot to include the design temperature, it will be evaluated at 400 deg.C -pvwander
  5. pvwander

    Heat Exchanger U-bend Under External Pressure

    Thank you for your responses guys about my question. sorry my reply is a bit late. I have checked the book of Harvey "Theory and design of Pressure Vessel" and I saw the photo of flatten cylinder legs while its U-bend was still intact. But the book still has not mentioned about the reason why...
  6. pvwander

    Heat Exchanger U-bend Under External Pressure

    Hi All, I am just new in this forum and I have these questions; Currently, I am calculating the max. span of U-tube under external pressure (shell side press.) 1. Do I need to add the U-bend length to the straight length for the computation of L/Do? 2. Can we consider the U-bend as...

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