How can you calculate density from : altitude temperature and absolute humidity

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SUMMARY

The calculation of density from altitude, temperature, and absolute humidity can be effectively performed using standard atmospheric tables, such as those provided by NASA. For a more detailed approach, refer to NIST's publication NBSIR 77-1278, which outlines the Air Density Equation and the transfer of mass units. The ideal gas law, represented by the equation PV=nRT, is essential for determining volume when pressure and temperature are known. By calculating specific volume and mass, density can be accurately derived.

PREREQUISITES
  • Understanding of the ideal gas law (PV=nRT)
  • Familiarity with standard atmospheric tables
  • Knowledge of specific volume and its relationship to density
  • Basic concepts of humidity and its impact on air density
NEXT STEPS
  • Research the NIST publication NBSIR 77-1278 for in-depth understanding of air density calculations
  • Explore the use of standard atmospheric tables for practical applications
  • Learn how to calculate specific volume from pressure and temperature
  • Investigate the relationship between absolute humidity and air density
USEFUL FOR

Students, meteorologists, engineers, and scientists interested in atmospheric science, fluid dynamics, and density calculations will benefit from this discussion.

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How can you calculate density from : altitude temperature and absolute humidity
 
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The easiest way is to use a standard atmospheric table like the one here:
http://modelweb.gsfc.nasa.gov/atmos/us_standard.html

http://hypertextbook.com/facts/2000/RachelChu.shtmlIf you want to get down and dirty with density calculations, look around for NIST's publication NBSIR 77-1278 The Air Density Equation and the Transfer of the Mass Unit.
 
Last edited by a moderator:
from humidity u can find due point

due point and temp u can find pressure

if the fluid is ideal u can find volume by PV=nRT

if u know pressure and temp u can find spc. volume

from spc.volume and volume u can find mass

from mass and volume u can find density...
 
If you know specific volume, you know the density.
 

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