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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.
Thermal spelling: The breaking or cracking or peeling off the refractory is known as spelling. A good refractory must show a good resistance to thermal spelling. Thermal spelling
INTRODUCTION : Earlier in this course you have read about the requirements of laboratories. You also know that these requirements can be for consumable and non consumable nature
Explain Sommerfeld theory Sommerfeld theory : The theory was originally proposed in 1900 to define and correlate the electrical and thermal properties of metals. Later, quantu
A mixture of calcium sulfate (CaSO4) and calcium uranate (CaUO4) contains 10% sulfur by mass. What is the mass percentage of uranium in the mixture?
Hard magnetic materials Permanent magnets are used as passive generators of magnetic field. To produce and maintain the magnetic field, a material should have both high resid
reaction between water and petrol engine exhaust gas(contain n2=71%, co2=21% ,co=1.5%)
DEFINE INORGANIC CHEMISTRY
100 mol/hr of methane reacts with steam to produce CO2 in a main reaction of the reformer. The amount of steam used is 12.5% excess based on this main reaction. Some of the methane
what are pseudo order reaction?with suitable example?
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
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