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Proceso 1-2 (compresin isentrpica de un gas ideal)

T1 = 300 K

h1 = 300.19

kj

kg

Pr1 = 1.386

Pr2 =

P2

P1 Pr

1 = (13 ) (1.386 )=18.018 T2 = 447.6 K

h2 = 8.!

kj

kg

Proceso 3- (e"pansin isentrpica de un gas ideal)

T3 = 81# K

h3 = 838.9!

kj

kg

Pr3 = !2

Pr4 = (

1

13)(52) = T4 = 06.6# K (a la salida de la tur$ina)

h4 = 08.31

kj

kg

%&''

w comp,entrada =2h

1

h = 18.31kj

kg

w turbina, salida =

3h4

h = 30.6

kj

kg

*+ ,,' /&' ,+ *+& & &

w comp,entrada =

wcomp , ideal

ncomp =148.31

0.85 =1#.8kj

kg

w turbina =w turbina,ideal "

nturbina = (30.6)(0.90) = 38#.!#6kj

kg

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neto = turbinacomp = (38#.!#6)( ma 4 mc(174.48x ma)

5000=387.576(

a

15 +ma)(174.48x ma)

5000=238.93ma

a=20.93 kg

s

c=1.39

kg

s