Hi, I am looking for the basic approach/equation to use to calculate the time it will take a fluid in an insulated pipe to heat up 5 degrees C if the outside air temperature is known.
Consider the fluid in the pipe to be water, the environment surrounding the pipe is air. I know the k and h for the pipe, insulation, air, and water, as well as the diameters of the pipe and pipe with insulation.
The fluid is not moving in the pipe as well and the length of the pipe is known.
I know how to calculate the heat loss/gain but was unsure how to use that to calculate the time it would take the water to heat up in the pipe.
Could the lumped capacitance method work? If so, how do I include the insulation in my calculations? (pipe wall thickness is known)
Thanks!
Edited by ptrearchis, 16 September 2014 - 01:44 PM.