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hi guys I have used the formulae from the link below, I have then calculated the outer casing temperature and then used this value to calculate the time taken to fully penetrate the PU foam and used the values to calculate the minimum depth after a specified time period - the time taken to...

hi guys thanks for all the responses, I think I have worked it out..... I have calculated the depth of pipe with no insulation, I have then calculated the temperature of the OD of the pipe and worked out the heat loss with the insulation. I have then done the same calculation using the...

it worked this time, thank you. i will have a read through, it looks very retro.

ione, again thanks for the response. http://www.cdeep.iitb.ac.in/nptel/Mechanical/Heat%20and%20Mass%20Transfer/Conduction/Module%204/interactivepages/prob4.5co.html#comments the link above is a similar calculation to yours. how would I go about incorporating the pipes insulation values in...

ione, thanks for the reply, this formula doesn't take the pipe insulation or is this the soil thermal diffusivity?

wow what was a quick reply !!! thanks. yes i am currently on page 12-14 using X = m(Ig)½ that expands in to using the correction coefficient, my main issue is how to calculate Ig? The pipe will be buried in London and have to withstand the winter months. when you say depth of freezing is...

Hello everyone I have been looking in to the required minimum burial depth of insulated pipes and I have become stuck. I have read through the attached pdf however I am getting weird values (0.00034mm depth). I have searched on-line for a while but no joy, there where a few pieces of...