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In Chapter 3 we assumed that, whenever fins are attached to a base material, the base temperature is unchanged. What in fact happens is that, if the temperature of the base
(a) Assuming that the occupants' body heat provides a continuous source of 320 W within the igloo, calculate the inside air temperature when the outside air temperature is Too = -40 C. Be sure to consider heat losses through the floor of the igloo.
(b) Using the thermal circuit of part (a), perform a parameter sensitivity analysis to determine which variables have a significant effect on the inside air temperature. For instance, for very high wind con- ditions, the outside convection coefficient could double or even triple. Does it make sense to con- struct the igloo with walls half or twice as thick?
determine the volume required to store 25kg of ethane at 320kpa and 35 degrees celsius. if the temperature rises to 65
a piping system consists of 100 ft of 2-in pipe a sudden expansion to 3-in pipe and then 50 ft of 3-in pipe. water is
Make a form tool for lathe for making a convex groove of 3 mm radius. tool material will be tungsten carbide. Know the dimensions of tool.
two jets of air of equal mass flow rate mix thoroughly before entering a large reservoir. one jet is at 400 k and 100
Piston-cylinder device contains 0.2kg of water initially at 800 kPa and 0.06m^3. Now 200 kJ of heat is transferred to the water while its pressure is held constant. Determine the final temperature of the water. Also, show the process on a T-v d..
a cruise ship is traveling at a speed of 24.0 . a speedboat with a late passenger is heading toward the cruise ship at
Determine the stress matrix components and epsilon_zz for known epsilon_xx, epsilon_xy, epsilon_yy for a) plane stress and b) plane strain condition incorporating thermal strains
Draft a designfor an activated sludge process operating as a CSTR based on the following Monod kinetic parameters
during some actual expansion and compression processes in piston-cylinder devices the gases have been observed to
it is proposed to use liquid petroleum gas lpg to fuel spark-ignition engines. a typical sample of the fuel on a volume
a steam turbine produces power w 3000 hp from a mass flux m 20000 lbhr. the steam enters at temperature t1 810.78 k
the wood beam has an allowable shear stress of 7 mpa. determine the maximum shear force v that can be applied to the
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