FUND OF ENG THERMODYN(LLF)+WILEYPLUS
9th Edition
ISBN: 9781119391777
Author: MORAN
Publisher: WILEY
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Twenty m/hr of air at 600 kPa, 330 Kenters 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.
Air at 1bar, 290K enters a compressor operating at steady state and is compressed adiabatically to 3bar. The isentropic
compressor efficiency is 80%. ignore kinetic and potential energy effects. Air can be modeled as ideal gas and k can be
chosen as 1.4, determine for the compressor
(a) the power input, in kJ/kg of air flowing. 134.26
(b) the amount of entropy produced, in kJ/kg-K of air flowing. 0.06564
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
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- Twenty m3/hr of air at 600 kPa, 330 Kenters 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, C, = 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 has been saved. See score details after the due date. Determine the mass flow rate, in kg/s. m = 0.0348 kg/s Attempts: 1 of 1 used Step 2 Determine the exit velocity, in m/s. V2 = i m/s Save for Later Attempts: 0 of 1 used Submit Answerarrow_forwardConsider a diffuser operating at steady-state. Air flows in with a velocity of 300m/s, a pressure of 1 bar, and a temperature of 70 ºC. The outlet is at 1.5 bar and 107 ⁰C.What is the exit velocity? What is the ratio of exit area to the inlet area of the diffuser?arrow_forwardTwenty 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.arrow_forward
- 6.14arrow_forwardFor air flowing through a converging-diverging channel, sketch the variation of the air pressure as air accelerates in the converging section and decelerates in the diverging section.arrow_forwardSteam enters a one-inlet, two-exit control volume at location (1) at 360°C, 100 bar, with a mass flow rate of 2 kg/s. The inlet pipe is round with a diameter of 5.2 cm. Fifteen percent of the flow leaves through location (2) and the remainder leaves at (3). For steady-state operation, determine the inlet velocity, in m/s, and the mass flow rate at each exit, in kg/s.arrow_forward
- Argon gas flows through a well-insulated nozzle at steady state. The temperature and velocity at the inlet are 550°R and 150 ft/s, respectively. At the exit, the temperature is 480°R and the pressure is 40 lbf/in². 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 lb/s. Step 1 Determine the velocity at the exit, in ft/s. V₂ = i ft/sarrow_forward23 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, c = 1.007 kJ/kg-K for air at 330K. Determine the mass flow rate, in kg/s, and the exit velocity, in m/s. Step 1 Determine the mass flow rate, in kg/s. m₁ = 0.04047 kg/s Step 2 Determine the exit velocity, in m/s. V₂ = 178.315 x m/sarrow_forwardAs shown in the figure below, air enters the diffuser of a jet engine operating at steady state at 18 kPa, T1 = 223 K and a velocity of 265 m/s, all data corresponding to high-altitude flight. The air flows adiabatically through the diffuser and achieves a temperature of 250 K at the diffuser exit. Diffuser, Compressor- Combustors Turbine Nozzle Pi = 18 kPa T V1 = 265 m/s T= 250 K Air Product in gases out Using the ideal gas model for air, determine the velocity of the air at the diffuser exit, in m/s. V2 = i m/sarrow_forward
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