5.4 - 5 5.4 T S 80C 47.39 kPa 1.0753 334.91 2.5 MPa 1 P H V...

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1 2 3 4 1 isentropic 80°C 700 130.3 80°C 47.39 kPa 2.5 MPa 2.5 MPa 47.39 47.39 TP 1.0753 1.0753 7.8435 7.8435 334.91 337.4 3914.5 2741.8 0.00102 ± S ± H ± V at P = () 0050 MPa . ~ 0.04739 T = 100 ; ± . H = 26825 ; ± . S = 7 6947 T = 150 ; ± . H = 27805; ± . S = 79401 ⇒= = TH 1303 27418 .; ± . kJ kg Work m kg kPa mk g P a gJm kJ kg 3 33 12 0001029 2500 47 39 2524 10 2524 =+ = × = × × = 3 z VdP .. η = W Q net in += + = − W net 27418 39145 25 11702 . . Q in = = 337 4 35771 . ==⇒ 35771 0327 32 7% . . Turbine is only 85%, but adiabatic ⇒− = = −= ×= W W turbine ideal turbine act 27418 1172 7 085 1172 7 9968 . . = ± . H 4 9968 2917 7 kJ kg So state 4 P = 47 39 . ; ± . H = 2917 7 T = ; ° 200 C ± . H = 2877 7 ; ± . S = 81580 T 250 C ; ± . H = 29760 ; ± . S = 83556 ; ° T 2203 .C ± . S = 82384 kJ kg K = = 9968 35771 278% . . 1 2 3 4 47.39 2.5 MPa 47.39 80 700°C ~190 T 334.91 3462.1 2860.2 1.0753 7.8435 1.0753 2.5 MPa ± H ± S P kPa kPa If turbine is only 85% efficient W =−= 34621 2754 0
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This note was uploaded on 01/20/2012 for the course CHE 330 at USC.

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5.4 - 5 5.4 T S 80C 47.39 kPa 1.0753 334.91 2.5 MPa 1 P H V...

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