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Recent content by ONEPOINT

  1. ONEPOINT

    Transient Heat Transfer from a Storage Tank

    Hi, I am wondering if I can perform a transient state heat transfer analysis with Pro/Mechanica, for a storage tank filled with oil? The initial temperature of the fluid is -22C and the final temperature is 5C. The wind velocity outside the tank is 14m/s(forced convection).The heating of the...
  2. ONEPOINT

    Transient Heat Transfer from a Storage Tank

    Hi, I am wondering if I can perform a transient state heat transfer analysis for a storage tank filled with oil? The initial temperature of the fluid is -22C and the final temperature is 5C. The wind velocity outside the tank is 14m/s(forced convection).The heating of the oil is done outside...
  3. ONEPOINT

    Heat Transfer from a Burried Pipe

    Hi BigInch, Thanks for your time and for your comprehensive answers. In the heat transfer text books that I have got, the rate heat loss calculations from buried pipes is done with the shape factor method that refers only to the conduction transfer mode through the soil.This method does not...
  4. ONEPOINT

    Heat Transfer from a Burried Pipe

    Hi BigInch, Thanks a lot for the suggestion oferred to me regarding the calculation of the heat rate loss from a buried pipe. I still need some more help from you in this regards. Here is the task that I have to solve: The pipe (NPS 24") is buried at 1 meter depth in soil. Ambient...
  5. ONEPOINT

    Suggestions for Modeling a Buried Pipe,

    Dear Mr. Borowski, Thank you very much for your support. As I have mentioned before, I am not quite knowlegeable with ALGOR capabilities. Comparing ALGOR with Pro/Engineer I would say that now as I started working with ALGOR, I do like ALGOR much more then PRO/Engineer. Yes, I am just trying...
  6. ONEPOINT

    Suggestions for Modeling a Buried Pipe,

    Dear Mr.Borowski, Thank you for your suggestions offered to me . I was very impressed with your web site. It seems to me that your level of expertise is quite advanced. I am more of a beginer with ALGOR.I had only some experience with Pro/Mechanica and Pro/Engineer. Unfortunately in my office...
  7. ONEPOINT

    Suggestions for Modeling a Buried Pipe,

    Hi, I have to model a NPS 48" buried pipe at 1 meter depth in soil(semi-infinite solid)K=1.7 W/ms).I need this geometry model in order to perform a steady state heat transfer analysis.The fluid inside the pipe is stationary and its temperature is 40C. Is there anyone who could give me some...
  8. ONEPOINT

    Forced or Natural Convection?(Storage Tank)

    Hi Quark, Thanks for your answer. Regarding the calculation of heat rate loss from or to a circular flat plate, some heat transfer text books, recommend for the Grashoff formula and convective coefficient formula, to use Lc(characteristic length) instead of the diameter. Lc being = D/4. You...
  9. ONEPOINT

    Forced or Natural Convection?(Storage Tank)

    Hi Torpen, In your reply you have mentioned about the following ratios: Gr/Re^2 << 1 Gr/Re^2 >> 1 In the Gr and Reynolds formulas, there are a couple of terms regarding the properties of the fluid. Where are those properties taken? Are they considered in the bulk of the fluid or at the...
  10. ONEPOINT

    Forced or Natural Convection?(Storage Tank)

    Hi I am doing heat transfer calculations for a 71'-0" height and 250'-0" diameter oil storage tank.The tank is not insulated and the roof of the tank is a floating type one that moves up and down with the level of the fluid in the tank. The peak velocity of the air outside the tank is 14 m/s...
  11. ONEPOINT

    Heat Transfer from a Burried Pipe

    Hi, I am trying to calculate the heat transfer rate from a burried pipe(depth=1meter, length=1000meters,high viscosity crude oil) when the surface ground temperature is -35C and -22C.The fluid is stationary and its temperature is 5C. There is a natural convection inside the pipe, a conduction...
  12. ONEPOINT

    Propylene Glycol vs Heat Trace

    Hi, I have to do a sizing(how many tracers and diameter)for an ethylene glycol heat tracing system for 12", 20" and 24" piping. Does anybody out there know what calculation steps shoud I take? Best regards, One Point
  13. ONEPOINT

    Propylene Glycol vs Heat Trace

    Hi, I have to do a sizing(how many tracers and diameter)for a ethylene glycol heat tracing system for 12", 20" and 24" piping. Does anybody out there know what calculation steps shoud I take? Best regards, Bogdan
  14. ONEPOINT

    Glycol Heat Tracing

    Hi TD2K (Chemical), What do you mean by "you'll have to assume negligible dT." What does "dT" refer to? Look forward to hearing from you. Kindly Regards, One Point
  15. ONEPOINT

    Glycol Heat Tracing

    Hi,TD2K (Chemical) Thank so much for your advice. I would be intersted in finding that article from Chemical Engineering Magazine that shows how to do the sizing. Could you give me a hint of where could I get that article? Could you please explain to me more specifically about the following...
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