heat transfer coefficients
heat transfer coefficients
(OP)
Hi,
I am trying to calculate the rate of condensation of Propane vapor at night in a carbon steel pipe due to temp drop. Is there any link that would show me the heat transfer coefficient for the propane? I would also need the heat transfer coefficient for butane (same situation). In addition to this I would like to find out the convective heat transfer coefficient for light wind on carbon steel pipe.
Thanks alot
I am trying to calculate the rate of condensation of Propane vapor at night in a carbon steel pipe due to temp drop. Is there any link that would show me the heat transfer coefficient for the propane? I would also need the heat transfer coefficient for butane (same situation). In addition to this I would like to find out the convective heat transfer coefficient for light wind on carbon steel pipe.
Thanks alot





RE: heat transfer coefficients
Good luck,
Latexman
RE: heat transfer coefficients
Radiation+convection ht coefficients from horizontal black pipes depend on their temperature, diameter, and ΔT with their surroundings. Enhancing effects such as by wind or a clear sky at nights may increase these values.
Indicative values (Btu per hr.ft2.oF) for pipes at 80oF in rooms (still air) I took from one source:
ΔT, oF → 100 200 400
pipe dia., in.
4 2.2 2.7 4.0
8 2.1 2.6 3.9
12 2.0 2.5 3.8