Re: Blower Air Mass Flow
Dear bharat,
Use the gas laws and Wikipedia.
The appropriate gas law in your case is:
p.V = m.R.T
p = pressure intake
V = volume intake/time
m = mass/time
R = gas constant
T = temperature intake degr Kelvin
Mass flow at the intake equals the mass flow at the outlet. (Law of continuity)
Take care of dimensions
success
Teus ■
Teus
Re: Blower Air Mass Flow
Dear bharat,
Use the gas laws and Wikipedia.
The appropriate gas law in your case is:
p.V = m.R.T
p = pressure intake
V = volume intake/time
m = mass/time
R = gas constant
T = temperature intake degr Kelvin
Mass flow at the intake equals the mass flow at the outlet. (Law of continuity)
Take care of dimensions
success
Teus ■
Teus
Re: Blower Air Mass Flow
yea i kno...
i am using that only..
should i take th pressure as 1 atm only..
and what does tha 16mmAq means.?? ■
Re: Blower Air Mass Flow
yea i kno...
i am using that only..
should i take th pressure as 1 atm only..
and what does tha 16mmAq means.?? ■
Re: Blower Air Mass Flow
Dear bharat,
A compressor performance is determined by its INTAKE conditions.
Therefore, you have to use the intake air conditions.
16 mmAq means 16 mm Aqua, which is 16 mmWaterColumn (0.16 kPa)
I assume, that is the static pressure increase of the blower at the given airflow under defined intake conditions (p and T)intake, which are probably stated on the nameplate.
If the blower or centrifugal fan (which I assume it is) is taking ambient air, you have to correct for actual ambient air conditions.
That can be 100 kPa (1 atm), but if you are at an altitude, the pressure is lower.
success
Teus ■
Teus
Re: Blower Air Mass Flow
Dear bharat,
A compressor performance is determined by its INTAKE conditions.
Therefore, you have to use the intake air conditions.
16 mmAq means 16 mm Aqua, which is 16 mmWaterColumn (0.16 kPa)
I assume, that is the static pressure increase of the blower at the given airflow under defined intake conditions (p and T)intake, which are probably stated on the nameplate.
If the blower or centrifugal fan (which I assume it is) is taking ambient air, you have to correct for actual ambient air conditions.
That can be 100 kPa (1 atm), but if you are at an altitude, the pressure is lower.
success
Teus ■
Teus
Re: Blower Air Mass Flow
Dear Bharat,
if you send the graphics of the blower, may be I can help you.
You will see which temperature generated the blower, pressure and flow, in initial and finaly conditions. And then aplicated this:
P*V/T(initials)=P*V/T(finals)
p-pressure (Pa)
V-flow(m3/min)
T-temperature(k)
is the same formula which said Mr. Teus (PV=nRT)
regards ■
Re: Blower Air Mass Flow
Dear Bharat,
if you send the graphics of the blower, may be I can help you.
You will see which temperature generated the blower, pressure and flow, in initial and finaly conditions. And then aplicated this:
P*V/T(initials)=P*V/T(finals)
p-pressure (Pa)
V-flow(m3/min)
T-temperature(k)
is the same formula which said Mr. Teus (PV=nRT)
regards ■
Blower Air Mass Flow
I need to calculate the mass flow for calculation of air enthalpy through the blower, the manufacturer has stated a pressure of 16mmAq for the boiler, the inlet for the blower is from atmosphere through a preheater,...kindly suggest how can i go for calculating as to how much mass is flowing through the blower
It's working at 550 m3/min in terms of volume.
thanks
bharat ■