Selection of Ambient Temperature in heat transfer calculation of pipe module in hysys
Thread Content
In the Ambient Temperature setting in the heat transfer calculation of the pipe module in hysys (within the red frame in the picture), generally if the calculated pipe is an above-ground pipe, its value can be the ambient temperature of the atmosphere. But if the calculation is for underground (buried) pipelines, should its value be the soil temperature at the buried location where the pipeline is located, such as: If the atmospheric temperature at that time is -30°C, when calculating buried pipelines, this Ambient Temperature is taken as the temperature below the soil permafrost layer, such as 0°C. Please give me some advice from all Haiyou masters, thank you!
Why didn't anyone reply? I'm asking for help from all my friends! Thanks
I have always calculated this way, so I can only refer to it. The error may be the heat transfer coefficient of the pipe wall to the soil.