Page 35 - BASIC CONCEPTUAL OF THERMOFLUID

SPECIFIC ENTHALPHY

h = u + Pv (kJ/kg)

Where,
h = hf(1 – x) + xhg
hf = specific enthalpy of saturated liquid (kJ/kg)
h = hf + x(hg – hf )
hg = specific enthalpy of saturated steam (kJ/kg)
h = hf + xhfg
hfg = difference between hg and hf (that is, hfg = hg - hf )

SPECIFIC INTERNAL ENERGY

Where,
u = uf(1 – x) + xug
uf = specific enthalpy of saturated liquid (kJ/kg)
u = uf + x(ug – uf )
ug = specific enthalpy of saturated steam (kJ/kg)
ug – uf = difference between ug and uf

SPECIFIC ENTROPY

s = sf(1 – x) +
xsgs = sf + x(sg

– sf )s = sf + xsfg

Where,

sf = specific enthalpy of saturated liquid (kJ/kg K)
sg = specific enthalpy of saturated steam (kJ/kg K)

sfg = difference between sg and sf (that is, sfg = sg - sf )

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