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Thread: Friction los calculation lines
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31-01-2007, 12:37 PM #1
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Friction los calculation lines
We use for the calculation of the friction loss along the lines the formula
Dp = Re x L x rho x V(square) /d/2 where rho is the density of the refrigerant in that line, d= inner diameter, L = length of the line (and additional the equivalent length of the bends in this line) and Re the Reynolds number of the used copper.
Literarture I have gives me Re numbers from 0.015 to 0.035 (or a differencee of +/- 250% which can give me a friction loss difference of 250%)
Does anyone have more accurate numbers because you then better guess the friction loss?
Or does someone use another formula to calculate this?Last edited by Peter_1; 31-01-2007 at 10:32 PM.
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