When the amount of mass or energy entering a control volume is equal to the amount...
When the amount of mass or energy entering a control volume is equal to the amount of mass or energy leaving during a process, is the flow steady or unsteady?
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When the amount of mass or energy entering a control volume is
equal to the amount...
The difference of momentum entering and exiting a control volume at multiple locations when the streamlines are normal to the control surface and parallel is not equal to the sum of the external force...
The difference of momentum entering and exiting a control volume at multiple locations when the streamlines are normal to the control surface and parallel is not equal to the sum of the external forces. True or False? The force of the weight of a fluid on a pipe bend can be neglected from the resultant force calculation if the bend is in the horizontal plane. True or false? What is the minimum set of values that must be known to...
A control volume operating at steady state has one inlet and two exits. Steam enters inlet...
A control volume operating at steady state has one inlet and two exits. Steam enters inlet 1 and sat. vapor at 2 bar exits exit 2 and sat. liquid at 2 bars exits exit 3 Using the data given, determine [a] the mass flow rate at the inlet state 1, in kg/sec, [b] the mass flow rate at exit state 2, in kg/sec, and [c] area required at exit 2 to ensure velocity is same as velocity at inlet 1...
A refrigerant enters a control volume in a steady state through a pipe of 1.6 cm...
A refrigerant enters a control volume in a steady state through a pipe of 1.6 cm internal diameter with a velocity of 4.43 m/s. It’s specific volume is 23.06 cm3 /g. Determine it’s mass flow rate in kg/min
mass is 75kg A diatomic gas is initially at 280 K when its volume is equal...
mass is 75kg
A diatomic gas is initially at 280 K when its volume is equal to your volume and its pressure is 100,000 Pa. It is compressed isothermally to a volume of 1.00x103 m2 and then allowed to expand isobarically for a while before expanding adiabatically back to its original state. What is your volume? What are the pressure, volume, and temperature at the end of the isothermal process? 3. 4. (Hint: your density is approximately 1 000 kg/m2.)...
1. A process control valve with an equal percentage plug is used to control an actuator...
1. A process control valve with an equal percentage plug is used to control an actuator with a maximum stem travel of 5cm. The minimum and the maximum flow rates of the valve are, respectively, 0.1 m/s and 4.0m3/s. What will be the flow rate when the stem movement is (a) 10mm (b) 20mm?
5. (Hints: This derivation is presented in your textbook briefly. I also discussed that in the cl...
plz if you could make it clear.
will thumb up
5. (Hints: This derivation is presented in your textbook briefly. I also discussed that in the class. I would like you to provide step-by-step process for this mathematical derivation. You need to use the continuity equation (Eq. 6-21) for the derivation process) Starting from the first law of Thermodynamics for a differential control volume, derive the general governing equation for temperature (6-35) for a 2D flow over flat plate. Using...
Two objects of different material have the same mass and temperature. When adding them equal amount...
Two objects of different material have the same mass and temperature. When adding them equal amount of heat, the final temperature of each one can be different since they have different? Specific heat Density Expansion Coefficient Thermal conductivity Volume
A fluid enters the control volume of the Figure at a mass flow rate of 2.50...
A fluid enters the control volume of the Figure at a mass flow rate of 2.50 slugs/s with a speed of 6.6 ft/s at an angle of 45 degrees. Calculate, in lb, the y-axis contribution of the term I vp (v.ü)da at the plane where the velocity is. w 4 90° Control Volume H X L
A fluid exits the control volume of the Figure at a mass flow rate of 1.71...
A fluid exits the control volume of the Figure at a mass flow rate of 1.71 slugs/s with a speed of 10.8 ft/s at an angle of 35 degrees. Calculate, in lb, the x-axis contribution of the term SVp (v. )da C.S. at the plane where the velocity is. w L Control Volume H 90° .X Your Answer: Answer
Heat transfer Upon making an energy balance on the control mass of a problem, a governing...
Heat transfer
Upon making an energy balance on the control mass of a problem, a governing equation has been derived for determination of the temperature T(0) within the control mass as 1. dT with the initial condition where T, is the surrounding ambient temperature, V'is the volume of the control mass, A, İs the surface area and èpm > 0 . The usual meanings of the other symbols apply. Obtain the steady-state temperature Tss, ie., TSS-T(1 → the parameters appearing...
mass is 75kg
A diatomic gas is initially at 280 K when its volume is equal to your volume and its pressure is 100,000 Pa. It is compressed isothermally to a volume of 1.00x103 m2 and then allowed to expand isobarically for a while before expanding adiabatically back to its original state. What is your volume? What are the pressure, volume, and temperature at the end of the isothermal process? 3. 4. (Hint: your density is approximately 1 000 kg/m2.)...
1. A process control valve with an equal percentage plug is used to control an actuator with a maximum stem travel of 5cm. The minimum and the maximum flow rates of the valve are, respectively, 0.1 m/s and 4.0m3/s. What will be the flow rate when the stem movement is (a) 10mm (b) 20mm?
plz if you could make it clear.
will thumb up
5. (Hints: This derivation is presented in your textbook briefly. I also discussed that in the class. I would like you to provide step-by-step process for this mathematical derivation. You need to use the continuity equation (Eq. 6-21) for the derivation process) Starting from the first law of Thermodynamics for a differential control volume, derive the general governing equation for temperature (6-35) for a 2D flow over flat plate. Using...
A fluid enters the control volume of the Figure at a mass flow rate of 2.50 slugs/s with a speed of 6.6 ft/s at an angle of 45 degrees. Calculate, in lb, the y-axis contribution of the term I vp (v.ü)da at the plane where the velocity is. w 4 90° Control Volume H X L
A fluid exits the control volume of the Figure at a mass flow rate of 1.71 slugs/s with a speed of 10.8 ft/s at an angle of 35 degrees. Calculate, in lb, the x-axis contribution of the term SVp (v. )da C.S. at the plane where the velocity is. w L Control Volume H 90° .X Your Answer: Answer
Heat transfer
Upon making an energy balance on the control mass of a problem, a governing equation has been derived for determination of the temperature T(0) within the control mass as 1. dT with the initial condition where T, is the surrounding ambient temperature, V'is the volume of the control mass, A, İs the surface area and èpm > 0 . The usual meanings of the other symbols apply. Obtain the steady-state temperature Tss, ie., TSS-T(1 → the parameters appearing...
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