Page 44 - DJJ20063- Thermodynamics 1

DJJ20063- Thermodynamics 1

Feedback To Activity 2B

2.3 Dryness fraction (x),

u = uf + x(ug -uf)
2000 = 1097 + x(2601 - 1097)

x = 0.6

2.4 Specific volume (v),
v = xvg

= 0.92(0.06246)

3
= 0.05746 m /kg

Specific enthalpy (h),

h = hf + xhfg

= 1025 + 0.92(1778)

= 2661 kJ/kg

Specific internal energy (u),

u = uf + x( ug -uf )

= 1021 + 0.92(2603 - 1021)
= 2476 kJ/kg

2.5 Dryness fraction (x),

h = hf + x hfg

2100 = 1429 + x(1286)
x = 0.52

Specific volume (v),
v = xvg

= 0.52(0.01696)

3
= 0.00882 m /kg

35 | P a g e