Questions about the pipeline oiling area calculation table
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In \"Handbook of Chemical Process Design, Volume 5: Piping Design\", under 1.18 Calculation of the piping coating area (Table 38-17), I’m confused: why is the insulation thickness included in the calculation of the coating area? It’s not clear from this table what the purpose of listing the insulation thickness is
Since the external insulation of some pipelines requires the application of a identifying color, the thickness of the insulation is indicated here
Without checking this standard, let’s guess: it doesn’t retain heat, and the area is equal to the outer diameter； With insulation, the area increases. Without insulation, the area is 3.14 * half of the outer diameter ^ 2 * length ； With insulation, the area is 3.14*（half of the outer diameter + insulation thickness）^2*length.
For external insulation layers applied with a brush, the thickness of the insulation layer needs to be taken into consideration. https://bbs.hcbbs.com/thread-2947151-1-1.html