Ideal Gas

Ideal Gas

Where

P — gas pressure, psi, Pa

V — specific volume, ft3/lbm, m3/kg, v= /p

M — molecular mass, lbm/mol, kg/mol

Ru —universal gas constant, /^,= 1545.32 ft-lbf/(mol-°R) = 8314 J/(mol-K) T — temperature, °R, K

Define:

Where

R — specific gas constant

Air: /^,=53.34 ft-lbf/(lbm-°R) = 287 J/(kg-K) water: Rv = 85.76 ft-lbf/(lbm-°R) = 462 J/(kg-K)

Then:

Pv=RT

Posted in Fundamentals of Heating. Ventilating, and Air-Conditioning