Air is flowing through a horizontal turbine as shown in Figure P7.20. At the entrance port the conditions are V = 100 ft/s, T = 320◦F, p = 160 psi, and area = 30 in.2. The conditions at the exit port...

Air is flowing through a horizontal turbine as shown in Figure P7.20. At the entrance port the conditions are V = 100 ft/s, T = 320◦F, p = 160 psi, and area = 30 in.2. The conditions at the exit port are V = 300 ft/s, T = 50◦F, and p = 45 psi. It is also known that there is a heat loss of 600,000 Btu/h at the turbine.

(a) Determine the density of the air at the exit port.

(b) Determine the diameter of the circular exit port.

(c) Determine the power (in hp) produced by this turbine.

(d) Comment on the relative magnitudes of the power generated and the heat loss.