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I would like know the dew point in a pneumatic conveying duct and plan to measure this by reading the wet bulb temperature at the inlet to the fan. Can I get a fairly accurate reading with a moist wick and thermocouple. I am learning that air speed past the sensor can be important I suppose I...

I would like to keep dust buildup off of conduit. Does anyone know of a coating available that I can apply to existing equipment that will make the surface "slippery"? I've heard there may be a silicon product that is applied to high tension wires for this reason. Does anyone have further...

I would like to limit dust buildup in a paper mill on horizontal and vertical surfaces to improve housekeeping. In humid areas of the mill fans tend to cause fine paper dust to stick to vertical surfaces and make buildup quite an issue. We are looking into air treatment to limit humidity but...

I don't see a required grip ratio for clamping type connections in ASME BTH-1-2005. Am I missing something or is this left open for "good engineering practices"?

I would really like to stay under the creep threshold so is this 1500F per note G5 or 1150F per note T15? I am getting more concerned with the T15 because it is somewhat ambiguous and affects that vessel at a lower temperature. Yes, I have learned quite quickly the cost of alloy 230! The...

I would be the first to say that I am over my head, and will greatly rely on the experience of the vessel designer. The task for me is to take the operation requirements and fit them into a vessel and get something close to what the end product will look like. On this project this intermediate...

Sound like my next task is to find some info on creep for nickel alloys. Note G5 states creep fatigue and thermal ratcheting set in at 1500F and must be considered in the design. Is there another part of the code that deals with this? or does the code leave it up to the engineer to apply...

I am working on a preliminary design of a pressure vessel with design paramaters of 100 psi and 1600F. Once I get something that seems workable then I will turn it over to a Code shop to have them run the ASME Sect. 8 Div. 1 calcs on it. I am looking at Nickel based super alloys for...

I am designing a high temperature pressure vessel (100psi, 1400F). A portion of the vessel is "cooled" through an external cooling jacket. The cooling medium is ambient air. If I have a 30deg F air flow localized at the inlet to the cooling jacket will I induce significant thermal stresses...

I am designing a slip shaft with a spline connection between a pipe and a solid shaft. I need to transmit torque and am looking for a standard spline. The highest number of teeth I see in the Machinery's Handbook is 16. this connection on a 3-1/2" shaft can transmit 8426 in*lbs per inch of...