Air enters a 28-cm diameter pipe steadily at 200 kPa and 20°C with a velocity of 5 m/s. Air is heated as it flows, and leaves the pipe at 180 kPa and 40°C. The volume flow rate of air at the inlet (m3/s)

Air enters a 28-cm diameter pipe steadily at 200 kPa and 20°C with a velocity of 5 m/s. Air is heated as it flows, and leaves the pipe at 180 kPa and 40°C. The volume flow rate of air at the inlet (m3/s)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

There is a washer consisting of a hose connected to a nozzle in the end. The water in it is supplied from a faucet to the hose at rate of 0.5 L/s with a temperature of 150C. The hose has a diameter of 15 cm. Upon turning the motor for the washer, the water was released at a velocity of 40 m/s reaching up to 4 m high. Heat transfer took place from the motor to the surroundings at 5% of the power input. What is the power input, in kW?Change in enthalpy of water=12.50 kJ/kg.
A diffuser contains air entering at 100 kPa, 27°C, with a velocity of 200 m/s. The inlet and exit cross- sectional areas of the diffuser are 100 mm? and 860mm2, respectively. If the exit velocity is 20m/s, determine the temperature of air when it leaves.
Air at 50 kPa, 100 °C and 5 m/s enters a pipe of diameter 14 cm and exits at 180 kPa and 400 °C. Assuming the air is heated as it flows through the pipe and that the diameter of the pipe is the same at both the inlet and outlet. Calculate: a. The volumetric flowrate of air at the inlet and exit of the pipe. b. The mass flowrate of air at the inlet and exit of the pipe. The rate at which heat is supplied to the system in kJ/s. с. Take the characteristic gas constant of air as 287 J/kg/K.
Steam enters a nozzle at 600 °C and 1200 kPa with a velocity of 13 m/s and leaves at 400 °C and 600 kPa while losing heat at a rate of 26 kW For an inlet area of 870 cm2 determine the velocity and the volume flow rate of the steam at the nozzle exit. rks ME 203 ons Steam V2 = 599 899 m/s volume flow rate = 2678 m/s V2 = 619 002 mis yolume flow rate = 3 152 m ls V2 = 914 995 m/s
Q2/ Air enters an adiabatic nozzle steadily at 400 kPa, 290°C, and 35 m/s and leaves at 200 kPa and 240 m/s. The inlet area of the nozzle is 100 cm?. Determine (a) the mass flow rate through the nozzle, (b) the exit temperature of the air, and (c) the exit area of the nozzle. R = 0.287 kJ/kg K, Cp = 1.005 kJ/kg K, %3D
A pump increases the water pressure from 8 kPa at the inlet to 700 kPa at the outlet. Water enters this pump at 41.51°C through a 1.774-cm-diameter opening and exits through a 2.327-cm-diameter opening. Determine the velocity of the water at the outlet in m/s when the mass flow rate through the pump is 1.163 kg/s. The specific volume of incoming water is 1.303 x 10³ m³/kg.
Air (MW=29 g/mol) at 115.00 kPa and 285.00 is compressed steadily to 600.0 kPa. The mass flow rate of the air is 2.00 kg/s and a heat loss of 32.1 kW occurs during the process. You may assume that changes in kinetic and potential energy are negligible, the temperature of the surroundings is 25 ∘C, and that the CP of air is 3.5 R. Given the compressor operates with a second law (reversible) efficiency of 0.60,calculate the following. What is the actual work interaction term in kW? What is the actual exit temperature of the air in Celcius?
An air cannon uses compressed air to propel a projectile from rest to a final velocity. Consider an air cannon that is to accelerate a 10-gram projectile to a speed of 300 m/s using compressed air, whose temperature cannot exceed 20°C. The volume of the storage tank is not to exceed 0.1 m3. Select the storage volume size and maximum storage pressure that requires the minimum amount of energy to fill the tank.
A pump increases the water pressure from 8 kPa at the inlet to 700 kPa at the outlet. Water enters this pump at 41.51℃ through a 1.122-cm-diameter opening and exits through a 2.709-cm-dameter opening Determine the velocity of the water at the outlet in m/s hen the mass flow rate through the pump is 1.693 kg/s. The specific volume of incoming water is 1.038x10^-3 m^3/kg.
A pump increases the water pressure from 8 kPa at the inlet to 700 kPa at the outlet. water enters this pump at 41.51 degree celcius through a 1.15-cm diameter opening. Determine the velocity of the water at the outlet in m/s when the mass flow rate through the pump is 2.637 kg/s the specific volume of incoming water is 1.799 x 10-3 m3/kg.
An insulated pipe of inside diameter 50 mm contains steam of specific enthalpy2·794 MJ/kg and specific volume 0·0394 m3 /kg. The pipe then reduces to 25 mmdiameter, and the specific enthalpy is then 2·786 MJ /kg and the specific volume is0·1043 m/kg. Determine the mass flow rate of the steam and its velocity in bothsections of the pipe
Steam enters a long, horizontal pipe with an inlet diameter of D1 =12 cm at 1 MPa and 300°C with a velocity of 2 m/s. Farther downstream, the conditions are 800 kPa and 250°C, and the diameter is D2=10 cm. Determine (a) the mass flow rate of the steam, (b) the velocity at the exit and (C) the rate of heat transfer