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Formulae (1)
HVAC & Refrigeration
Advanced
Humidity Ratio
w
=
0.622
p
v
p
−
p
v
w = 0.622 \frac{p_v}{p - p_v}
w
=
0.622
p
−
p
v
p
v
Mass of water vapour per unit mass of dry air.
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