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!
A cold air chamber is proposed for quenching steel ball bearings of diameter D = 0.2 m and initial temperature Ti = 400°C. Air in the chamber is maintained at - 15°C by a refrigeration system, and the steel bans pass through the chamber on a conveyor belt. Optimum bearing production requires that 70% of the initial thermal energy content of the ban above - 15°C be removed. Radiation effects may be neglected, and the convection heat transfer coefficient within the chamber is 1000 W/m2 · K. Estimate the residence time of the balls within the chamber, and recommends a drive velocity of the conveyor. The following properties may be used for the steel: k = 50 W/m · K, a = 2 X 10-5 m2/s, and c = 450 J/kg · K.
Steam at 550 lbf/in.2, 700oF enters a turbine operating at steady state and exits at 1 lbf/in.2. The turbine produces 500 hp. For the turbine, heat transfer is negligible as are kinetic and potential energy effects.
An insulated, rigid tank is divided into two equal parts by a partition. Initially, one part contains 6.06 kmol of an ideal gas at 155 kPa and 30C, and the other side is evacuated. The partition is now removed, and the gas fills the entire tank. Dete..
an office building where smoking is prohibited has 600 employees. the building is to be maintained at 78 db and 65 wb
estimate the pressure on your hand when you hold it in the stream of air coming from the air hose at a filling station.
a steel shaft of radius r75mm is subjected to an axial compression p81kn a twisting moment t15.6kn.m and a bending
During this process, heat is transferred from a heat source at 200oC, such that when the valve is closed, the temperature inside the tank is 50oC. What is the heat transfer?
an oven has five radiant heaters each one is rated at 15 kw. it should heat some 2-kg steel plates from 20 degrees
A power plant generates steam from coal burning which burns at 3,000oF and produces about 13,000 BTU per pound. The steam is put into a poorly insulated turbine which allows 2,000 BTU per pound of coal to escape to the atmosphere at 90oF. Knowing the..
a heated vertical wall 1.0 ft high of an oven for baking food with the surface at 450 f is in contact with air at 100
saturated ammonia vapor leaves an evaporator at 10 f and 0.5 lbms. the velocity must be less than 15 fts. what is the
on a hot summer day a student turns his fan on when he leaves his room in the morning. when he returns in the evening
A steel flywheel 25 mm thick with an outer diameter of 1 m and an inner diameter of 200mm is rotating at 100 hz. Determine the radial and tangential stress distributions as a function of radial position r. Plot the distribution
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