A mixture of water (density=1000 kg/m3) and vapor flowing with a mass rate = 7 kg/sec in a pipe of 1000 m long and 50 mm diameter, the gas fraction is 20%,then the volumetric rate of the water is:
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- A fan is used to transport CO2 gas (MW = 44 g/mol) gas at rest @ 700mmHg. At the discharge end, the pressure is 765mmHg, and the velocity is 100 m/s. Assuming the flue gas behaves ideally, and the process is isothermal, with the temperature maintained at 100C. Determine the theo. power required to move 45000 m /h of the flue gas.A pipeline carries a flow of 60.34 m3/min of steam at 1.00 MPa and 20.09°C superheat. Determine the mass flow rate of steam in kg/min.Nitrogen at a pressure of 200 kPa and a temperature of 25°C, flow at a velocity of 20 m/s through a pipe with a diameter of 35 mm Working substance:______system:______ Sketch :
- Air flows into a turbine at a rate 30 [m 3 /s], a temperature of 1100 [K] anda pressure of 300 [kPa]. The turbine’s work output is 200 [kJ/kg]. Determine thetemperature of the air at the exit, the power output in [kW] and the isentropicefficiency. The pressure ratio of the turbine is 3. The specific gas constant, R, for airis 0.287 [kJ/kg-K].Argon gas enters a constant cross-sectional area duct at Ma1 = 0.2, P1 = 320 kPa, and T1 = 400 K at a rate of 0.85 kg/s. Disregarding frictional losses, determine the highest rate of heat transfer to the argon without reducing the mass flow rate.The flow rate of methanol at 20°C (? = 788.4 kg/m3 and ? = 5.857×10−4 kg/m·s) through a 4-cm-diameter pipe is to be measured with a 3-cm-diameter orifice meter equipped with a mercury manometer across the orifice plate, as shown. If the differential height of the manometer is 11 cm, determine the flow rate of methanol through the pipe and the average flow velocity.
- Explain why the maximum flow rate per unit area for a given ideal gas depends only on P0 /√T0. For an ideal gas with k = 1.4 and R = 0.287 kJ/kg·K, find the constant a such that m ·/A* = aP0 /√T 0.A power plant in rough terrain has a 100-m stack with an inside radius of 1 m. The plant emits 300 g/s of SO2 from the stack with an exit velocity of 10 m/s at a temperature of 120oC. Ambient temperature is 6oC and the temperature increases at a rate of 2 K/km. At 10 m above ground, surface windspeed is 1.5 m/s on a mostly cloudy night. Find the concentration (mg/m3) of SO2 using the included equation: Directly downwind at a distance of 2 km. At a point located 2 km downwind and 0.1 km off the downwind axis. At the point downwind where it is a maximum. Approximately how far from the stack does this occur?Determine the static fan efficiency if total fan mechanical efficiency is 70% and air is measured at 25 deg C and 760 mmHg for a fan that draws 1.42 cubic meters of air per second at a static pressure of 2.54 cm of water through a duct 300 mm diameter and discharges it through a duct of 275 mm diameter.
- Natural gas, with the thermodynamic properties of methane, flows in an underground pipeline of 0.6 m diameter. The gage pressure at the inlet to a compressor station is 0.5 MPa; outlet pressure is 8.0 MPa (gage). The gas temperature and speed at inlet are 13C and 32 m/s, respectively. The compressor efficiency is η = 0.85. Calculate the mass flow rate of natural gas through the pipeline. Label state points on a Ts diagram for compressor inlet and outlet. Evaluate the gas temperature and speed at the compressor outlet and the power required to drive the compressor.The mass flow rate of air at 20°C (? = 1.204 kg/m3) through a 18-cm-diameter duct is measured with a Venturi meter equipped with a water manometer. The Venturi neck has a diameter of 5 cm, and the manometer has a maximum differential height of 60 cm. Taking the discharge coefficient to be 0.98, determine the maximum mass flow rate of air this Venturi meter/manometer can measure.A gas flows steadily through a rotary compressor at a temperature of 16 ⁰C, a pressure of 100kPa, and an enthalpy of 392.2 kJkg-1. The gas leaves the compressor at a temperature of 245⁰C, a pressure of 0.6 MPa and an enthalpy of 534.5 kJkg-1. There is no heat transfer to or fromthe gas as it flows through the compressor. Using the steady flow equation appropriate toeach case, evaluate the external work done per unit mass of gas: a) when the inlet and exit velocities of the gas are negligible b) when the inlet velocity of the gas is 80 ms-1 and the exit velocity of the gas is 160 ms-1.