IN.WG PR.LOSS IN STRAIGHT DUCTS PRESSURE LOSS IN ELBOWS PRESSURE LOSS IN REDUCERS
= = =
20% SAFETY FACTOR
=
TOTAL PR.LOSS
=
0.0349 0.0051 0.0227
PASCALS 8.6899 1.2629 5.6601
0.0125
3.1226
0.0752
18.7356
S.NO
1 2 3 4
ITEM
STR.DUCT STR.DUCT STR.DUCT STR.DUCT
REFRENCE
A-B B-C C-D E-F
SIZE IN mm W
H
200
150
FLOW RATE LENGTH IN L/S M 47
28
SIZE IN in W
H
8
6
LENGTH EQUIVALENT DIA IN FT 91.8
7.6
FLOW RATE CFM
PRESSURE LOSS/100FT
100
CLICK HERE 0.038
0.0349
8.69
=
0.0349
8.69
TOTAL FRICTION LOSS IN STRIGHT DUCT
PRESSURE PRESSURE LOSS LOSS (IN.WG) (PASCALS)
PRESSURE LOSSES IN ELBOWS SIZE IN mm S.NO
ITEM
REFRENCE
1 2
ELBOW OUTLET
EL-1
Width(W)
Height(H)
300
300
FLOW RATE RADIUS OF L/S ELBOW(r) 284
150
CLICK HERE R
300
θ
H/W
R/W
1.0
1.0
FITTING VELOCITY LOSS(IN.WG) = PRESSURE(Vp) CxVp
Coefficiant-C
FLOW RATE M³/s
VELOCITY IN FPM
0.21
0.28
622
0.0242
0.0051
TOTAL PRESSRE LOSS IN ELBOW
=
0.005
FITTING LOSS(PASCALS) 1.26
1.263
S.NO
ITEM
REFRENCE
SIZE IN mm W
H
500 200 400 200
300 200 300 200
FLOW RATE L/S
VELOCITY PRESSURE
30
300
0.12786
30
100
0.01421
ANGLE (θ)
1
REDUCER
RD-1
2
REDUCER
RD-2
3
REDUCER
RD-3
30
150
4
REDUCER
RD-4
30
800
5
REDUCER
RD-5
30
200
6
REDUCER
RD-6
30
500
7
REDUCER
RD-7
30
600
8
REDUCER
RD-8
30
800
9
REDUCER
RD-9
30
200
10
REDUCER
RD-10
30
300
AREA-1 (A1) sqf
AREA-2 (A) sqf
A1/A
1.67
0.44
3.8
0.06
0.00767
1.33
0.44
3.0
1.06
0.01506
ENTER DUCT SIZE ENTER DUCT SIZE ENTER DUCT SIZE ENTER DUCT SIZE ENTER DUCT SIZE ENTER DUCT SIZE ENTER DUCT SIZE ENTER DUCT SIZE
ENTER DUCT SIZE ENTER DUCT SIZE ENTER DUCT SIZE ENTER DUCT SIZE ENTER DUCT SIZE ENTER DUCT SIZE ENTER DUCT SIZE ENTER DUCT SIZE
CLICK HERE COEFFICIANT
PRESSURE LOSS IN "IN.WG"
2.06
TOTAL PRESSURE LOSS
=
0.02273
PRESSURE LOSS IN "PASCALS" 1.91029 3.74984
5.66013
1 EQUI.DIA = (WxH) POWER 0.625)/(W+H)POWER 0.25 W = WIDTH OF DUCT H = HEIGHT OF DUCT 2 TOTAL PRESSURE LOSS IN FITTING = C x Vp C = FITTING LOSS COEFFICIANT Vp = VELOCITY PRESSURE 3 1 IN.WG = 249 PASCALS 4 1L/S = 2.119 CFM
FLOWRATE AREA VELOCITY VELOCITY
1 0.28 0.09 3.16 621.64