Pipe length for tank for heating
Pipe length for tank for heating
(OP)
I am specifying a heater for a new tank. My bright idea was to use the glycol available at 180 F and route it through the interior of the tank in 2" welded pipe and coil it until the appropriate BTU's are transferred. Considering the tank has no mixing, assuming the fluid is stagnant, how do I find the overall resistance. I know Q available from the glycol and the thermal conductivity of the fluid to be heated.





RE: Pipe length for tank for heating
Your heat transfer book will have natural covection correlations for the outside. For the inside, use a correlation for the inside of a tube.
Once you have the two heat transfer coefficients (the outside will be controlling), you can calculate the size of the coil you need.
RE: Pipe length for tank for heating
1. typ. fluid water like, approx. U=25-60btu/hr/ft^2/deg.F
2. typ. fluid oil like, approx. U=5-10btu/hr/ft^2/deg.F
For other fluids interpolate.
Hope this helps.
saxon
RE: Pipe length for tank for heating
RE: Pipe length for tank for heating
I wouldn't mind having a copy of that for documentation. Mind sending a fax or snail mail?
Mrepp
RE: Pipe length for tank for heating
RE: Pipe length for tank for heating
Don't have that book. My fax is 907-273-3990 if you can spare a copy.
RE: Pipe length for tank for heating
You are from which country.
Let me check which one will workout cheaper-Scaning or Fax.
Provide your MAIL ID
RE: Pipe length for tank for heating