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...
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...
...flows in circular tubes. But this method does not specifically refers to the buried pipes.
The number that I got for Nu was 548 and then h = Nu*(k/D)= 57.6 W/m2*C. Then for one meter length of pipe As = 3.76 m2 and Q = 841 W.
So, if this is the rate heat loss that occurs inside the 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...
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...
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...
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...
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...
...so one has to resort to an iterative method in order to get the values from them.
The Nuselt number expression that you mentioned(NuL = (h * L) / k) is used in for natural convection only or it is also used for forced turbulent convection situations?
When you say characteristic length Lc...
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...
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...
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
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
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
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...
Hi,
I am wondering if someone knows about the Glycol Heat Tracing Systems? I need to find the number of tubes and the size of them for 24",12" 30" NPS? Any idea about a refernce manual or a handbook that would show the design procedures?
Regards,
One Point
Does anyone know where could I find some comprehensive information(handbooks,tutorials, worked examples), regarding the sizing of Glycol Heat Tracing(Oil Industry?
I need the Glycol Heat Tracing Design procedure for NPS 24",12" 30" pipes.
Kindly regards,
One Point
Hi,
1)Can anybody supply me with the chemical composition and mechanical properties(Min Yield Strength for ASTM SA-350 Grade LF6 Class 1 and Class 2?
2)Can anybody supply me with the chemical composition for ASTM SA 358 309H,Gr.2.,ASTM SA 694,ASTM SA 242(Welding)
and ASTM SA 381? I also need...
Hi,
I was asked to review some data about the Maximum Unsupported Pipe Length(Feet). The data that I was given is a 12 and 16 inches diameter pipe. For a 0.250 wall thickness I was given the following lengths: 80 feet for the 12 inches diameter and 83 feet for the 16 inches diameter.The Pipe...
Hi JStephen and jte,
Thanks for your answers.I was asked by my superviser to solve this problem a few days ago. I am quite new in this area of expertise. I have managed so far to do some calculations. I am not sure if I am on the right track.The following is what I have considered. There is also...
