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Dave41A, I have already calculated the approximate temperature of the tubing to be 45 degF at the bottom of the tubing where the 10" space location and 53 degF at the 2" space location (on drawing, top view). These temperatures are a result of a calculated temperature distrubution via...

I am trying to find a way to calculate the heat (Btu's) transferred from a vertical surface to a horizontal surface via convection currents. This is a difficult scenario to explain in words, so I took a moment to create a picture showing the details. Basically I have a tank with a shell...

The +460 is to convert to degrees Rankine to accomadate the form of the Stefan-Boltzman constant I used. This conversion from degrees Fahrenheit to degrees Rankine is accurate.

Okay, I have used the following formula to find T2. I have tried every temperature between 216 degF and 40 degF and the two sides do not equal out. Still not sure what I am doing wrong here. I have written below exactly what I have been using to try and solve for T2. Please review and let me...

Corus, That is a bit clearer, thank you. Do you just determine the area of the ambient using the view factor reciprocity rule and then iterate the beam Temp that zeros out the Qnet balance?

Hacksaw, I have assumed equal emissivities, I am not sure if you talking about the structural steel beam when you wrote bottom plate. The beam is a square tube (10x10), so I think what you are saying is that I have ignored any heat flows already existing in the beam which is also true. I am...

Could you please elaborate? Are you saying that my Qnet should be: Qconvection1 + Qrad(F1-2) + Qrad (1-F1-2) = Qrad(1-F2-1)+ Qrad(F2-1) + Qcovection2 And solve for the temperature of the structural steel that way?

I am trying to calculate the temperature of the closest side of a structural steel frame (10"x10"x.5", 304ss) to a 304ss vessel wall that is at 216 degF and 10" away. |Outer vessel T | \ 216 degF / <--- Rudimentary vessel...

I didn't think the rate of Btu's generated by conduction was equal to the rate of Btu's generated by convection. I was under the impression that Q convection was much less... Otherwise this method and gave a very realistic lug temperature. Please confirm my question about Q conduction = Q...

I just have to mathmatically prove that the frame will not exceed 140 degrees F. The cross sectional area and surface area change several times as the distance increases, mostly due to the frame the lug is resting on. The average cross sectional area of the first fifteen inches from the vessel...

When an insulated tank of 306 degrees F has an uninsulated lug sitting on an uninsulated frame. I am trying to determine how far, inch by inch, from the lug to the frame and down, will the temperature decrease. I have been studying the heat transfer equations for conduction, convection, and...

I am reviewing a German flow meter diagram. Many of the dimensions on this drawing have the typical plus or minus tolerances. Several others have a superscript or subscript tolerance. I am trying to determine the minimum thickness. If the outer diameter of this pipe component is 114mm with a...

I am reviewing a German flow meter diagram. Many of the dimensions on this drawing have the typical plus or minus tolerances. Several others have a superscript or subscript tolerance. I am trying to determine the minimum thickness. If the outer diameter of this pipe component is 114mm with a...