Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
An inclined plate in a piece of process equipment is tilted 30? above the horizontal and is 20 cm long and 25 cm wide (in the horizontal direction). The plate is held at 280 K by a stream of liquid flowing past its bottom side; the liquid in turn is cooled by a refrigeration system capable of removing 12 watts from it. If the heat transfer from the plate to the stream exceeds 12 watts, the temperature of both the liquid and the plate will begin to rise. The upper surface of the plate is in contact with gaseous ammonia vapor at 300 K and a varying pressure. An engineer suggests that any rise in the bulk temperature of the liquid will signal that the pressure has exceeded a level of about pcrit = 551 kPa.
a. Explain why the gas's pressure will affect the heat transfer to the coolant.
b. Suppose that the pressure is 255.3 kPa. What is the heat transfer (in watts) from gas to the plate, if the plate temperature is Tw = 280 K? Will the coolant temperature rise? Data for ammonia are given in App. A.
c. Suppose that the pressure rises to 1062 kPa. What is the heat transfer to the plate if the plate is still at Tw = 280 K? Will the coolant temperature rise?
an electric motor of total weight 3330 pounds is mounted on a simply supported beam with an overhang as shown
A 4 pole, 9 coil, simplex wave wound machine with 20 turns per coil is rotating in a field of 3T, and pole area of 100cm2. Find the maximum torque generated from a 100V source, and an armature resistance of 1 ?. Find the current, if the machine has b..
determine the total hemispherical emmisivity of a surface that has a spherical hemispherical emmisivity of 0.3 at
In conveyor belts calculations, if it is required of me to calculate "The Power transmitted by the drive,at the specific efficiency" Which power are they reffering to?
a string is attached to the drum radius r of a spool radius r as shown in side and end views here. a spool is device
two meshing helical gears have a 25 degree transverse pressure angle and a 20 degree normal pressure angle. the gears
a person weighs 180lbs at sea level. the radius of the earth is 3960 mi. what force is exerted on the person by the
a voltmeter with a range of 0 to 100v reads 2v when the leads are shorted together. the manufacture claims an accuracy
a piston-cylinder contains 1.2 kg of saturated water vapor at an initial temperature of t1 200 oc.
air at 2900 r 435 psia enters a turbine operating at steady state and expands adiabatically to the exit where the
a circular hollow steel drill pipe should not stretch more than 5mm when it is subjected to a tensile load. knowing
What are the different types of stakeholder concern that may arise in a large system? How can aspects support the implementation of each of these types of concern?
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd