Determine the velocity of the air at the inlet

Assignment Help Mechanical Engineering

Reference no: EM13711551

At steady state, air at 200 kPa, 325 K, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. The inlet cross-sectional area is 6 cm 2 . At the duct exit, the pressure of the air is 100 kPa and the velocity is 250 m/s. Neglecting potential energy effects and modeling air as an ideal gas with constant cp=1.008 kJ/kg K, determine

a) the velocity of the air at the inlet, in m/s.

b) the temperature of the air at the exit, in K.

c) the exit cross-sectional area, in cm^2

Reference no: EM13711551

Questions Cloud

Find the reservoir that the stream of water exiting nozzle : A fire truck draws water from an open constant-level reservoir through a hose of 0.2 ft2 cross section. The water is discharged from the pump through another 0.2 ft2 hose to a surge tank pressurized to 120 psig with air at the top. The pump adds 970 ..

Determine the volume and height of the cooling tower : A counter flow cooling tower cools 2000 gal/min water from 104 F to 85 F with 210,000 ft^3/min of air at 90 F Dry bulb Temperature and 76 F WBT . The Mass transfer coefficient -surface area product is hA= 123lbm/hr ft^3. Air mass flow rate per unit c..

Torsion and direct compression in the base of the boom : A work platform is elevated on the end of a boom that has the ability to extend its length and vary its angle with respect to the ground. The platform width is large compared to the boom diameter so that it is possible to load the boom eccentrically ..

Determine net rate of heat transfer for ambient reservoir : A heat pump supplies 40 kW of heat to maintain the inside of a house at 25 degree C in cold winter months when the ambient temperature is 00C. Power required to operate the heat pump cycle is provided by a heat engine cycle which receives 10 kW of he..

Determine the velocity of the air at the inlet : At steady state, air at 200 kPa, 325 K, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. The inlet cross-sectional area is 6 cm 2 . At the duct exit, the pressure of the air is 100 kPa and..

Streams of cold and warm air are mixed to get air : In air-conditioning systems, streams of cold and warm air are mixed to get air with the right temperature. Consider a mixing chamber into which cold air enters at 8 degree C and 100 kPa at a rate of 0.55 m3/s and warm air enters at 30 degree C and 10..

Find the sum upto n terms : find the sum upto n terms of the following sequence 3+33+333+... n terms

Determine the voltage of the source : A piston-cylinder device contains 12 kg of saturated R-134a vapor at 3.2 bar. An electric source supplies 8 A current to a resistor within the cylinder for 4 minutes and there is heat transfer of 400 kJ to the system. During these energy interactions..

Draw a hierarchy chart and then plan the logic for a program : Draw a hierarchy chart and then plan the logic for a program for the sales manager of The Couch Potato Furniture Company. The manager needs a program to determine the profit on any item sold. Input includes the wholesale price and retail price for..

User Account

All Pages