Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations SDETERS on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by billhen

  1. billhen

    Heat exchanger preformance testing

    Much of basic information is missing. That is needed to understand the question. Water fouling is based on velocity, temperature, metallurgy, and composition. By 'simulating' you might mean by raising water temperature as far as you can and maintain required cooling. You need to know the actual...
  2. billhen

    grooving on tube sheet for expansion

    Beyond TEMA, metallurgy and high pressure have lead to having a groove in the cladding of the shellside of a tubesheet. That is seen as a less expensive alternative to all alloy tubesheets, double tubesheets, and alloy sealwelded tube hole sleeve inserts. This is because tube rolling...
  3. billhen

    Equation for calculation boiling & condensing inside vertical tube

    Boiling or condensing inside vertical tube are not evaluated by any single equation today. Both directions of phase change go through 'flow regimes' in which the each phase may be turbulent, transition, or laminar by velocity or annular, bubble, sheer, flooded (ect.) by shape. These condition...
  4. billhen

    Heat removal

    I think MintJulep is on the right track. I suspect the insulation is for personnel protection and could be removed and replaced with a wire screen permitting the heat to leave the system faster and gain time to max. heat up. Just how much would require all of the shape, material, fluid...
  5. billhen

    Ratio of window to cross flow velocity

    These ratios were in general design practice for single phase flow prior to about 1970. With the development of appropriate software for incremental analysis to equalize pressure drop in the various flow paths through and around baffles, such generalized design practice became obsolete to the...

Part and Inventory Search