The pressure loss of a circuit is the addition of the pressure loss of each device in the circuit and all the obstacles met by the air.<\/p>\n
Devices & equipment: the value of the pressure loss should be given by the supplier\/manufacturer (ex: filter, heat exchanger, scrubber, recovery boiler\u2026)<\/p>\n
Obstacles: elbows, bifurcation, reduction, enlargement of the pipe section are brakes to the air move, represented by a pressure drop expressed in Pa, mmH2O, mbar, etc.<\/p>\n
If<\/p>\n
-\u2206p is the pressure drop in daPa<\/p>\n
-v \u00a0is the speed of the air in m\/s, with v = Q\/S (Q is the flow in m\u00b3\/s and S the section of the pipe in m\u00b2)<\/p>\n
-\u03c1 \u00a0is the density of the air in kg\/m\u00b3,<\/p>\n
We have:<\/p>\n
\u2206p\u00a0 = K x v\u00b2 x \u03c1 \/ 20, K, is the factor of the pressure drop of the considered item (ex: elbow K=0.1 to 0.5 according the design)<\/p>\n