what is the conversion factor for nm3 to kg/hr in air flow
Answers were Sorted based on User's Feedback
Answer / hermann
1Nm3 (normal m3) of air is a volume of 1m3 of air under
normal conditions of pressure (1 atm = 101.330 kPa) and
temperature (0 deg C = 273 K) (Europe);
Since air can be assumed to behave as an ideal gas under
those conditions, its compressibility factor is 1; so in
the relation:PV=ZmRT; Z=1;R for air= 0.287 kPa.m3/(kg.K);
V=1m3; therefore 101.330*1=1*m*0.287*273; so m = 1.295 kg.
Conversion factor: 1 Nm3/hr = 1.295 kg/hr
Is This Answer Correct ? | 166 Yes | 44 No |
Answer / neelakanth pattar
As per ideal gas law
PV = mRT
Data : P-pressure-101.330Kpa at atm
T-273K std
R-0.287 Kpa/Kr.k
V-1 m3
So. 101.330 x 1 = m x 0.287 x 273
m = 1.295 Kg
i.e , 1 Nm3/hr = 1.295 Kg/hr
20 Nm3/hr = 20x1.2929 kg/hr
Is This Answer Correct ? | 49 Yes | 14 No |
Answer / rajesh gajera
The ideal gas law demonstrates that: PV=nRT in which n=m/M
n= mole number
m= mass or mass flow (kg/h)
V= volume or volumetric flow (m3/hr)
M= molecular weight of the gas for example Molecular weight of nitrogen (N2) =28 kg/kgmole
In Normal conditions according to the latest SI definition P=100 kpa and T=0 C or 273.15 K
R = gas constant =8.314 pa.m3/mol.K
So, PV=(m/M)*R*T or m(kg/h) = (P*V*M)/(R*T)
at Normal conditions then we have:
m(kg/h) = M* 100* V (Nm3/h) / (8.314*273.15) or
m(kg/h) = 0.044 M* V (Nm3/h)
example: 20 Nm3/h of Nitrogen is equal to:
m = 0.044* 28 (molecular weight) * 20 (Nm3/h)
m = 7 kg/h
Is This Answer Correct ? | 0 Yes | 9 No |
What standards are used for earthing of field instruments?
How to do gas analysers calibration in AUTO and Manually by using zero and span gas?
Hi..i am B.E. (elect.&comm.)..i m workini in a bio mass power plant as inst. Engg. I want 2 know about growth in big power plant sector..is this field is good 4 me ..i m electronics engg..? Plz plz reply..
What is SLPC & MLPC? How it works?
Why thermo wells are used? What materials are used in thermo wells?
How earthing can be checked????
Which language of programing is popular? how can i learn it ?
Define the difference between a stable versus an unstable controlled system and some of the tools you might use to be able to detect when this is happening and assumptions used for control system application design that could contribute to instability
why we use 3 wire rtd direct wiring for temperature measurement instead of temperature transmitter like bearing temperature
how does we calibrate a square root flow transmitter ,give an example and explain it step by step like range calculation , calibration hook up series connection , zero check , and how to apply pressure , and if not geting proportional output then what should we do ?
Explain about relays.. Can we give both AC and DC to the same relay... How it is energising.. Explain its working..
how to check the leak in thermowells