All, I’d like to model a 1,000 meter long pipe that connects into an existing district thermal system. I have a three different potential configurations to model. 1) A double wall / direct bury pipe 2) Pipe in a box conduit 3) Pipe in a utility tunnel I assume my best bet is to use either Type952 or Type 951 for buried horizontal pipes. Then adjust the heat transfer losses for each configuration. I could also just use a regular pipe, Type 31, and have a surrounding air temperature some temperature above ambient. Any thoughts? Fred
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