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  1. pharoofthermo

    Heat Transfer in Process Piping

    Do any of you guys have a recommendation or know of a calculator for deteming total heat loss in a length of process piping? Basically, I have Natural Gas flowing from a regulating station to a gas turbine. Some of the pipe is above ground, while some of it is below ground. I have all the...
  2. pharoofthermo

    pressure measurement in air duct system with U-tube manometer

    MVD, I agree with BRT549. You only need a static pressure gauge for the application. At the velocity/area values provided I would only expect pressures in the range of 0-10 inches of water. Pharo of Thermo
  3. pharoofthermo

    Starting Torqure et. al.

    Thanks for the help guys! I now see a path to the answer. Pharo of Thermo
  4. pharoofthermo

    Starting Torqure et. al.

    Hey Guys, I typically answer Thermal Science questions on this forum, but now find myself being the one who needs to ask a question. It's in the physics/dynamics area, so I'm a little out of my area of expertise. Here's the problem: I have a paper roll 7 feet in diameter x 9 feet long...
  5. pharoofthermo

    Valve Stem Friction

    jabsab, Does the valve have a rotary actuator that pushes and pulls the valve stem via a rack-and-pinion or similar device? I would like to see this valve. I don't know that I've seen a gate valve where the stem friction wasn't due to the interface between the valve stem and the valve...
  6. pharoofthermo

    How do they do it in a coal-fired power plant?

    These are all accurate responses. Virtually all modern combined cycle and coal fired facilities use a Turbine Bypass System. This system utilizes a valve sized to take the pressure drop that exists in the event of a turbine trip. Furthermore, an attempurator (desuperheater) is installed...
  7. pharoofthermo

    Any comments on Piping Stress Analysis Software?

    Caesar II.....there is no substitute.

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