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!
Calculate the value of convection coefficient required to cool the alloy steel balls (15 mm diameter, density = 8000 kg/m3, specific heat = 500 J/kgK, conductivity = 50 W/mK) from 820°C to 100°C. The bathing temperature is 40°C and the process must be completed in 5 min, 10 min and 30 min. Draw the relationship between time and heat transfer coefficient
A short compression member is subjected to a compressive load of 25,000 lb at an eccentricity of 1.5 in., as shown. The member is 6 in. by 8 in. in cross section. Calculate the combined stresses at the outer edges AA and BB.
In the idealized model attached shown, m = 15 kg, k = 135 N/m, and the viscous damping ratio is 0.15. Assume that an external harmonic force F(t) = 15 cos 4 t acts on the system with F0=15 N and forcing frequency of 4 rad/s.
1. Baking a potato takes a long time, even in a hot oven, because the inside of a potato warms up very slowly. e. Why Can a Microwave do this job more efficiently and quicker? f. What is a potato clock and why does it work?
The figure shows an N-truss girder, loaded by concentrated vertical forces of magnitude 3P at the joints F and J, and of magnitude 6P at the joints G, H and I. All bars are elastic with stiffness EA.
Calculate the manometer reading H for a pressure of 30 psi in the air pipe. Assume an isothermal process for the air in the sealed tube.
A heat pump uses r134a as the refrigerant to keep a heated space at 20°c by pumping from a geothermal water source. Water from the geothermal source enters the evaporator (a heat exchanger) at 50°c and leaves at 40°c at a rate of 0.08 kg/s. The re..
consider a cogeneration power plant modified with regeneration. steam enters the turbine at 9 mpa and 400 c and expands
A hydroelectric site has available HT 80 m and Q = 3 m3 /s. It is proposed to use a Francis turbine unit with the operating characteristics at optimum efficiency shown in Fig. 12.24. Determine the required speed and diameter of the machine.
a well-insulated vertical piston-cylinder device contains air. the diameter of the piston is 8 inches. atmospheric
For a control volume including the turbine and a portion of its immediate surroundings so that the heat transfer occurs at the ambient temperature, 40°F, determine the rate of entropy production in Btu/ °R per lb of air passing through the turbine..
Perform a dimensional analysis to determine the dimensionless groups that would be required to define the pump performance. Arrange the groups so that the power and pump pressure each appear in only one group.
you have a refrigeration plant that makes ice in the summer to supply grocery stores. you maintain the cold room where
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