Chapter 6, Problem 6.70P

Twenty m³/hr of air at 600 kPa, 330 K enters a well-insulated, horizontal pipe having a diameter of 1.2 cm and exits at 120 kPa. Assume steady state and use the ideal gas model for the air. Also assume constant specific heat, cp = 1.007 kJ/kg-K for air at 330 K. Determine the mass flow rate, in kg/s, and the exit velocity, in m/s. Step 1 Your Answer Determine the mass flow rate, in kg/s. mi = Step 2 Correct Answer (Used) 0.0352 * Your answer is incorrect. kg/s Determine the exit velocity, in m/s.

Refrigerant 134a enters an insulated diffuser as a saturated vapor at 80°F with a velocity of 1400 ft/s. The inlet area is 1.4 in². At the exit, the pressure is 400 lb/in² and the velocity is negligible. The diffuser operates at steady state and potential energy effects can be neglected. Determine the mass flow rate, in lb/s, and the exit temperature, in °F. Step 1 Your answer is correct. Determine the mass flow rate, in lb/s. m = 28.887 Hint Step 2 * Your answer is incorrect. Ib/s. Determine the exit temperature, in °F. T2=₁276.3 °F Attempts: 1 of 4 used

Argon gas flows through a well-insulated nozzle at steady state. The temperature and velocity at the inlet are 590°R and 150 ft/s, respectively. At the exit, the temperature is 500°R and the pressure is 40 Ib;/in?. The area of the exit is 0.0085 ft2. Use the ideal gas model with k = 1.67, and neglect potential energy effects. Determine the velocity at the exit, in ft/s, and the mass flow rate, in Ib/s.

Refrigerant 134a enters an insulated diffuser as a saturated vapor at 80°F with a velocity of 1400 ft/s. The inlet area is 1.4 in². At the exit, the pressure is 400 lb/in² and the velocity is negligible. The diffuser operates at steady state and potential energy effects can be eglected. Determine the mass flow rate, in lb/s, and the exit temperature, in °F. Step 1 Your answer is correct. Determine the mass flow rate, in lb/s. m = 28.887 Hint Step 2 lb/s. Determine the exit temperature, in °F. T₂ = i OF Attempts: 1 of 4 used

Argon gas flows through a well-insulated nozzle at steady state. The temperature and velocity at the inlet are 590°R and 150 ft/s, respectively. At the exit, the temperature is 440°R and the pressure is 40 Ibę/in?. The area of the exit is 0.0085 ft². Use the ideal gas model with k = 1.67, and neglect potential energy effects. Determine the velocity at the exit, in ft/s, and the mass flow rate, in Ib/s.

Liquid water flows isothermally at 20°C through a one-inlet, one-exit duct operating at steady state. The duct's inlet and exit P2 = 4.8 bar T = 320°C diameters are 0.02 m and 0.04 m, Water vapor (AV)2 = (AV)3 respectively. At the inlet, the velocity is 50 m/s and the pressure is 1 bar. At the exit, determine the mass flow rate, in kg/s, and V, T A1 = 0.2 m? P1 = 5 bar 3 velocity, in m/s. P3= 4.8 bar T3 = 320°C

Refrigerant 134a enters an insulated diffuser as a saturated vapor at 60°F with a velocity of 1200 ft/s. The inlet area is 1.4 in?. At the exit, the pressure is 400 lby/in? and the velocity is negligible. The diffuser operates at steady state and potential energy effects can be neglected. Determine the mass flow rate, in Ib/s, and the exit temperature, in °F. Step 1 Determine the mass flow rate, in Ib/s. i Ib/s.

Refrigerant 134a enters an insulated diffuser as a saturated vapor at 120°F with a velocity of 1200 ft/s. The inlet area is 1.4 in?. At the exit, the pressure is 400 Ibf/in? and the velocity is negligible. The diffuser operates at steady state and potential energy effects can be neglected. Determine the mass flow rate, in Ib/s, and the exit temperature, in °F.

Refrigerant 134a enters an insulated diffuser as a saturated vapor at 80°F with a velocity of 1400 ft/s. The inlet area is 1.4 in?. At the exit, the pressure is 400 lb;/in? and the velocity is negligible. The diffuser operates at steady state and potential energy effects can be neglected. Determine the mass flow rate, in Ib/s, and the exit temperature, in °F.