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Two parallel planes 1.2x1.2 are splited by a distance of 1.2 m. the emissivity's of the planes are 0.4 and 0.6, and the temperature are 760 and 300 oC, correspondingly. A 1.2x1.2 radiation shield having an emissivity of 0.05 on both side situated equidistance among the two planes. The combined arrangement is placed in a large room which is maintained at 40 oC. (a) Determine heat transfer rate from each of the two planes if the shield were not present. (b) Determine heat transfer rate from each of the two planes if the shield were present. (c) Temperature of the shield.
Permeability: The rate of diffusion of molten solid liquid and gases through refractories is called permeability. Low permeability is usually more important than low porosity from
Projection Printing Projection printing, keep away from mask damage entirely. An image of the patterns on the mask is projected onto the resist-coated wafer, which are many cen
Q. What are lubricants? Explain properties of lubricating oil. Ans. Lubricants: The metal to metal frictional resistance can be minimized by using certain suitable substanc
Electric susceptibility The electric susceptibility χ e of a dielectric material is a calculate of how easily it polarizes in response to an electric field. This, in turn, ver
application of molecular diffusion in industries
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air flows through apipe at arte of 200L/S. The pipe of two sections of diameters 20cm and 10cm with asmoth reducing section the pressure are difference between the two pipe sectio
What are the design considerations for a piping system for the transfer of slurries? The below points should be considered for designing a piping system to carry slurries: >
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