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Carbon dioxide enters an adiabatic nozzle steadily at 1 MPa and 500°C with a mass flow rate of 6000 kg/h and leaves at 100 kPa and 450 m/s. The inlet area of the nozzle is 40 cm2 Determine (a) the inlet velocity and (b) the exit temperature.
Answers
a. 156.8 m/s
b. 32.5 J/kg K
c. 0.763
4.15. Carbon dioxide flows in a horizontal adiabatic, no-work system. Pressure and temper- ature at section 1 are 7 atm and 600 K. At a downstream section, p2 = 4 atm., T2 = 550 K, and the Mach number is M2 = 0.90. (a) Compute the velocity at the upstream location. (b) What is the entropy change? (e) Determine the area ratio A2/A.
Suppose that the average velocity (vrms) of carbon dioxide molecules (molecular mass is equal to 44.0 g/mol) in a flame is found to be 9.39 ✕ 102 m/s. What temperature in kelvin does this represent?
4. Carbon dioxide (CO2) gas at 30C is flowing in a pipeline with diameter 0.1 m and at a velocity of 50 m/s. Calculate the pressure read by the two mercury manometers when (a) one is connected to the wall and (b) the other is connected to what is called a pitot tube that points against the flow. The barometer reads 762 mm of Hg, g=9.81 m/s2 and hg=13,640 kg/m3. (c) Explain why the pressure at the pitot tube is...
At section (1) in an isentropic flow of carbon dioxide, P1 = 40 kP (abs), TI-60 oC, and V1-350 m/s. Determine the flow velocity at section (2) where the Mach number is 2. Also calculate the section area ratio, A2/A1.
QUESTION 2 Carbon dioxide enters an adiabatic nozzle steadily at 1 MP, 481 °C, and mass flow rate of 6,706 kg/h and exits the system at 110 kPa and 468 m/s. Considering the nozzle having an inlet area of 45 cm, calculate the inlet velocity in m/s (Give your answer with three decimals, and do NOT enter units!!!).
10. The speed of sound S (in m/s) is related to temperature by the formula S(T) 331.3 V1 +0.00366T where T is the temperature (in °C). (a) Find the rate of change of the speed of sound with respect to tem- perature, at a temperature of T = 21°C. Show the steps for obtaining your value, and give your value accurate to 4 decimal places (b) For temperatures near T 21 °C, does the speed of sound increase or decrease...
Topic: Compressible fluid flow Carbon dioxide gas (μ=1.5x10-5 N-s/m2 ) flows in a horizontal 30-mm wrought iron pipeline at a speed of 8 m/s. At a point in the line a P gauge=690 kPa and the temperature is 400C. What P is lost as a result of friction in 50 m of this pipe? Pbarometric = 101.3 kPa. Check if Weymount equation can be used and utilize it if possible.
4. (20pts) The atmosphere of mars is 95% Carbon dioxide (CO2), 3% Nitrogen (N2), and 2% Argon (Ar) by volume. Assume that k=1.3. The average temperature is T=200K. a. What is the molecular weight of the atmosphere on Mars in kg/kmol? b. What is the gas constant R of the atmosphere on Mars in kJ/(kg∙K)? c. What is the speed of sound in the atmosphere of Mars under these conditions? Ans. Approximately 220m/s. d. A mars probe is travelling through...
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13. Carbon dioxide (typically called dry ice when it?s in solid form) transitions between its solid phase and its gas phase at a temperature of -78.5 degree C. Suppose we have 3.12 kg of dry ice at -125 degree C. flow much heat must be added to transform all of the dry ice into gas with an equilibrium temperature of -78.5 degree C? The latent heat of sublimation of dry ice is 5.72 x 10^5 J/kg and the...