With Moody diagram you can calculate the pressure drop in any flow system.
Given the flow parameter (Re) and the roughness parameter (k/d), you can get the friction factor (f). Using the (f) factor, you can work out the pressure drop from: dP = ½ ρ f L V2 / d. This program works for all fluids like water, air, refrigerant, glycol, etc.
This program enables you to explore pressure in the atmosphere and underwater.
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