Thermodynamics THERMODYNAMIC PROPERTIESSpecificVolumeThe specific volume (n) of a substance is the total volume (V) of that substance divided by thetotal mass (m) of that substance (volume per unit mass). It has units of cubic feet perpound-mass (ft3/lbm).(1-3)nVmwhere:n= specific volume (ft3/lbm)V = volume (ft3)m = mass (lbm)DensityThe density ( ) of a substance is the total mass (m) of that substance divided by the totalrvolume (V) occupied by that substance (mass per unit volume). It has units of pound-mass percubic feet (lbm/ft3). The density ( ) of a substance is the reciprocal of its specific volume (n).r(1-4)rmV1nwhere:= density (lbm/ft3)rm = mass (lbm)V = volume (ft3)n= specific volume (ft3/lbm)Rev. 0 Page 3 HT-01
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