Engine exhaust back pressure calculation
Engine exhaust back pressure calculation
(OP)
To find out engine exhaust back pressure we are using the following formula:
P= (L X S x Q^2 X 3.6 X 10^6) / (d^5) + Muffler resistance
P = Back pressure in KPa.
L= Length of pipe in Meter.
Q = Exhaust gas flow in Kg/m3
S = Density of gas Kg/m3.
D = Inside diameter of pipe in mm.
T = Exhaust Temperature ºC
Ps = Muffler resistance KPa.
In the above formula we coould not find elevation. Can we calculate back pressure without considering elevation ? Please clarify.
P= (L X S x Q^2 X 3.6 X 10^6) / (d^5) + Muffler resistance
P = Back pressure in KPa.
L= Length of pipe in Meter.
Q = Exhaust gas flow in Kg/m3
S = Density of gas Kg/m3.
D = Inside diameter of pipe in mm.
T = Exhaust Temperature ºC
Ps = Muffler resistance KPa.
In the above formula we coould not find elevation. Can we calculate back pressure without considering elevation ? Please clarify.





RE: Engine exhaust back pressure calculation
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: Engine exhaust back pressure calculation
Q = Exhaust gas flow in Kg/m3 - 340.2 kg/m3
S = Density of gas Kg/m3- 0.51kg/m3
D = Inside diameter of pipe in mm-381 mm
T = Exhaust Temperature ºC - 425ºC
Ps = Muffler resistance KPa. - 2.5 KPa
Exhaust elevation is approx. 15m.
No. of 45º elbow - 4 Nos.
No. of 90º elbow - 4 Nos.
for this scenario do we need to consider elevation?
RE: Engine exhaust back pressure calculation
Good luck,
Latexman
RE: Engine exhaust back pressure calculation
RE: Engine exhaust back pressure calculation
RE: Engine exhaust back pressure calculation
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: Engine exhaust back pressure calculation
Mike Halloran
Pembroke Pines, FL, USA
RE: Engine exhaust back pressure calculation
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
RE: Engine exhaust back pressure calculation
Good luck,
Latexman
RE: Engine exhaust back pressure calculation
"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek