A cross section of a furnace is that of any equilateral triangle. All the surfaces are grey and diffuse. The fumace is so long that the end effects on radiation can be neglected. The areas of each face of 3/5 the triangle are Im?. The hot wall is maintained at Ty 1000 K and has -0.8. The cold wall is at T2 - 400 K and has c-0.3. The third wall is reradiating. (a) Draw the resistance network in between the surfaces (b) Calculate the net radiation heat flux from the hot to the cold wall (W/m) (c) What is the temperature of the reradiating wall?
Theory and Design for Mechanical Measurements
Measurement is a term that refers to analyzing a manufactured component regarding the degree of accuracy for dimensions, tolerances, geometric profile, roundness, flatness, smoothness, etc. Measurement always involves comparing the manufactured component or the prototype with a standard specimen whose dimensions and other parameters are assumed to be perfect and do not undergo changes with respect to time.Precisely in mechanical engineering the branch that deals with the application of scientific principles for measurements is known as metrology. The domain of metrology in general deals with various measurements like mechanical, chemical, thermodynamic, physical, and biological measurements. In mechanical engineering, the measurements are limited to mechanical specific such as length, mass, surface profile, flatness, roundness, viscosity, heat transfer, etc.
Basic principles of engineering metrology
Metrology is described as the science of measurement, precision, and accuracy. In other words, it is a method of measurement based on units and predefined standards.
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