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  • Submitted: Apr 29 2013 12:21 PM
  • Last Updated: Apr 29 2013 12:21 PM
  • File Size: 88KB
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Download Pipe Heat Loss

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heat loss gain pipe flow


Calculate the heat lost or gained by a fluid flowing in a pipe.  Presented in MS Excel with metric units.  Includes treatment of wind variables for outdoor installations.

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raj shekhar
Apr 30 2013 08:50 PM

hi how you here encountering the increasing temp. difference between pipe material and ambient temp.. i.e. your pipe is cooling and ambient temp. remains same the temperature so the difference would quiet obviously change, then how do you address this situation.

thank you



Sep 23 2013 10:33 AM

Please can you tell me that If I want to apply 6 brag pressure of air in 38 dia OD and 33.8 dia ID pipe size, What is the velocity in the pipe? same for steam @ 3 bar(g) pressure in same line.

Please give me the reply my mail ID tarang.suthar@gmail.com and also please give me the calculation.

Hi Steve,

Appreciate your effort. My question is :
Can you use this to estimate the wall temperature of pipe exposed to solar insolation at no flow condition ?
Often enounter this problem while doing pipe stress calculations and ahve not found a reliable solution yet.

Hello Mr. Hall,


On cell D56 where the inside heat transfer coefficient is calculated you divide the pipe inside diameter by 1000 before you divide it by pipe length. I do not see the relevance to the formula described on the right.


Could you clarify for me?


Thank you,

G. Sotirelis

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