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If the pipe is to be insulated with glass wool insulation (k = 0.05 W/m K) in order to decrease the temperature rise of water to 0.25degreeC, determine the required thickness of the insulation.
Calculate the power produced by each turbine, power consumed by each compressor, and the rate of heat rejection. Use constant specific heats at room temperature.
A thermometer placed in the tank indicates the air temperature at the final state is 77 degrees C. Determine (a) the mass of the air that has entered the tank and (b) the amount of heat transfer.
Plot the cost versus r for 2 ≤ r ≤ 10 m, and determine the radius that results in the least cost. Compute the corresponding height h.
If the rod is 4 long when the springs are compressed 0.5 . and the temperature of the rod is 60, determine the force in the rod when its temperature is 180.
Calculate the overall aerosol mass removal efficiency for the device. If the aerosol concentration is 200 mg/m^3, and the device operates steadily with a flow rate equal to 1.5 m^3/s.
Calculate the mass concentration of the aerosol, the number concentration of the aerosol, and the mass mean particle diameter.
Determine largest load P that can be applied to the beam before it ruptures. the diameter of the strut is 12mm and diameter of the post is 40mm.
A 100Kg pure Iron block at 27 degrees C is dropped into an insulated, rigid tank that contains 0.1m3 of unused engine oil (density of oil = 868.8 kg/m3 ) at 77 degrees C.
Estimate the rate of heat loss due to radiation from a covered pot water 95 C .How does this compare with the 60 W lost due only to convection and conduction losses?
Would it be a possible to use a normal domestic refrigerator as a heat source for a small hot tub or whirlpool? If so, would estimate to be the maximum heating rate.
Find the response of a generic undamped spring-mass system subjected to a square pulse F(t)=F0 for 0≤t<t0 and 0 for t>t0 using the Laplace transform method.
Determine. (a) the temperature at the turbine inlet, in degrees F. (b) the power developed by the turbine, in Btu per lb of steam flowing.
Determine the minimum mass flow rate of the water, in kg/s, for which the limit on the temperature of the exiting water is met.
Calculate the work done when a gas expands from 350 kPa and 0.03 m^3 to a final volume of 0.2 m^3 for the case of n=1.5?
A friction less piston-cylinder device initially contains 50 L of saturated liquid refrigerant-134a. Calculate the work done during this process?
The piston is now moved by changing the weights until the volume is twice its original size. During this process, argon's temperature is maintained constant. Determine the final pressure in the devi
If m = 2.0 kg, determine the stiffness of the spring so that the period of the free vibration of the system is half a second.
If the nozzle is attached to a 2.875-in.-diameter hose, what pressure must be maintained just upstream of the nozzle to deliver this flowrate?
Determine the maximum acceleration that can be achieved by the car without having the front wheels A leave the track or the rear drive wheels B slip on the track.
Find the maximum tangential stress, maximum radial stress and maximum shear stress assuming no grinding load and a material with v = 0.2.
Determine the change in the internal energy and enthalpy of water on the basis of the (a) compressed liquid tables, (b) incompressible substance approximation and property tables (c) specific heat m
Calculate the percentage of the benzene in the process feed (i.e., the feed to the first column) that emerges in the overhead product from the second column.
An artificial kidney is a device that removes water and waste products from the blood. Calculate the rates at which urea and water are being removed from the blood.
Assuming the process is working correctly, draw and label a flow sheet, do a degree of freedom analysis, and determine the molar flow rate of humid air (lbmole/hr).