The steady cycle Rankie

Question 1

What are the four stages of the Rankie cycle?

Answer 1

Isentropic compression
Constant pressure heat addition
Isentropic expansion
Constant pressure heat rejection

Question 2

Using the first law of thermodynamics, how can work be determined in process 1 to 2 in the Rankie cycle?

Answer 2

q12=0
w12=-(h2-h1)<0
h=u+pv
w12=-vΔp

Question 3

Using the first law of thermodynamics, how can work be determined in process 2 to 3 in the Rankie cycle?

Answer 3

q23-w23=h3-h2
w23=0
q23=(h3-h2)>0

Question 4

Using the first law of thermodynamics, how can work be determined in process 3 to 4 in the Rankie cycle?

Answer 4

q34-w34=h4-h3
q34=0
w34=-(h4-h3)>0

Question 5

Using the first law of thermodynamics, how can work be determined in process 4 to 1 in the Rankie cycle?

Answer 5

q41-w41=h4-h1
w41=0
q41=(h4-h1)<0

Question 6

Rankie cycle thermal efficiency equation?

Answer 6

n=1+q41/q23

=1-(h4-h1)/(h3-h2)