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the energy consumption associated with a home water heater has two componentsi the energy that must be supplied to
a blood warmer is to be used during the transfusion of blood to a patient this device is to heat blood taken from the
a freezer compartment is covered with a 2-mm-thick layer of frost at the time it malfunctions if the compartment is in
the project should be a design problems see below the topic lists a review or summary of literatures the topic can be
question 1 let xi i 1 50 be independent random variables with xi having exponential distribution with mean 09ia
consider a small but known volume of metal that has a large thermal conductivitya since the thermal conductivity is
at a given instant of time the temperature distribution within an infinite homogeneous body is given by the
the steady-state temperature distribution in a onedimensional wall of thermal conductivity 50 wmk and thickness 50 mm
derive the energy change when a cube-shaped powder of edge l is densified without grain growth from the calculated
you have a steel powder and a steel sheet with the same chemical composition draw schematically and explain the changes
when a polycrystal is immersed in a liquid which is in chemical equilibrium with the solid the liquid can penetrate
consider three crystalline particles separated as shown in figure p211 draw schematically and explain the change in
1 explain why the shrinkage equation derived from a two-particle model cannot be applicable to the prediction of the
1 in sintering of glass spheres with a radius of 15 mm it took 200 min at 627degc and 10 min at 677degc to get a
1 a explain herrings scaling law in solid state sintering and describe important points to be considered in its
1 with a decreased particle size what sintering mechanisms become relatively more important why2 consider two glass
1 explain how the migration direction is determined at the beginning of diffusion-induced grain boundary migration2
1 draw a schematic figure and explain the grain growth velocity as a function of grain size from 001 to 100mum for a
1 if grain growth is affected by gas diffusion in pores with a constant pressure what is the activation energy of grain
describe the basic assumptions involved in the microstructure development map in figure 112 and discuss their validity
draw schematically the g-rho trajectories and explain for two powder compactsa with different green densities low and
1 derive equations of pore migration bya gas diffusion andb evaporationcondensation2 for pore migration movement by gas
1 for a system where abnormal grain growth usually occurs during sintering what possible measures can be taken to
consider fine and coarse powders of the same chemical composition during sintering of the powders a fine powder compact