Question

THERMO:

QUESTION 5

1. Saturated water vapor at 12.92 bar enters an insulated throttling valve which drops the pressure to 1.50 bar. Determine the temperature (^oC) of the steam at the exit of the valve.

   Note: Give your answer to two decimal places.

QUESTION 6

1. Air enters an adiabatic diffuser at 320 K and 100 kPa with a velocity of 665.4 m/s. At the diffuser exit, the temperature is 520 K. Determine the velocity (m/s) at the exit of the diffuser. Use the tables for air as an ideal gas.

   Note: Give your answer to two decimal places.

QUESTION 7

1. Air flow of 2.43 kg/s enters a diffuser at 240 K and 40 kPa with a velocity of 594.7 m/s. At the diffuser exit, the temperature is 380 K. Heat transfer from the diffuser to the surroundings occurs at a rate of 5.3 kW. Determine the velocity (m/s) at the exit of the diffuser. Use the tables for air as an ideal gas.

   Note: Give your answer to two decimal places.

QUESTION 8

1. Steam enters an adiabatic nozzle at 4000 kPa, 440^oC, with a velocity of 75 m/s. At the exit, the pressure and velocity are 1800 kPa and 635 m/s, respectively. Determine the area (m²) at the exit of the nozzle if the mass flow rate is 1.41 kg/s.

   Note: Give your answer to six decimal places.

Answer 1

5 Giver -1392 ス」 R-1-5694 3336 KJ フ As the steam i) th-coffled to2 l-Sbof the Seame be caeve tho ff 2786 60.3 C

Question- G),-to 31 3 - IC we have 031k520+ 2

uetio- at T-2 We heve 2. 2. 2 2501m