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How to Determine Superheated Ammonia Vapor Density?

How to Determine Superheated Ammonia Vapor Density?

How to Determine Superheated Ammonia Vapor Density?

(OP)
How do you determine the vapor density of superheated ammonia vapor at the following conditions:

- pressure = 15 psig
- temperature ~ 130 deg F

RE: How to Determine Superheated Ammonia Vapor Density?


MAPower:

You could also use the ideal gas law to calculate the density:

lb/ft3 = (MW/10.73)(P/T)

where:
MW = molecular weight = 17.03 for ammonia
P = absolute pressure in psia = 15 + 14.696 = 29.696 psia
T = Temperature in deg Rankine = 130 + 460 = 590 deg R

lb/ft3 = (17.03/10.73)(29.696/590) = 0.0799

which is within 1.5% of the NIST value of 0.081121 given you by user 25362.

You might find it useful to read:

www.air-dispersion.com/formulas.html

Milton Beychok
(Visit me at www.air-dispersion.com)
.

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