Seeking advice on the thickness of the insulation layer
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I need help determining the thickness of the insulation layer. The insulation material should be mineral wool or glass wool. The pipe diameter is 150 mm, the temperature inside the pipe is 5°C, the lowest ambient temperature is -30°C, and the length of the pipe is 780 m. What should be the thickness of the insulation layer?
I’m pretty sure about this; horse chestnut is mostly used
To calculate this, it is necessary to specify the medium inside the pipe (such as water) as well as the allowable temperature drop. Alternatively, you can look up the values in existing tables; according to our company’s standards, 30 mm is sufficient (though this value might be on the high side).
The medium inside the pipe is water (firefighting water), and a permissible temperature drop of 5 is allowed to prevent freezing
It is recommended to use electric heating in combination with insulation.
1. If the pipeline is outdoors and filled with water, electric heating should be considered； 2. For pipes of 150, the insulation thickness should be 40 mm.
For pipes with a diameter of 150, the insulation thickness should generally be at least 100 mm; two layers of insulation material are required