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A house is losing heat at a rate of 2700 kJ/h per Celsius temperature difference between the indoor and the outdoor temp. Express the rate of heat loss from this house per a.) K b.) F and c.) R difference between the indoor and the outdoor temp.
a thin plastic membrane is used to separate helium from a gas stream. under steady-state conditions the concentration
a hydrogen tank 25 cm in diameter and 80 cm in height is charged to 150 atmospheres at room temperature 25 c. a
a diesel engine uses 54.4 kg of fuel oilh of calorific value 45 mjkg. the thermal efficiency of the engine is 25.
Determine the average luminous exitance of the opaque interior surfaces of the room - what is the reflected component at this point?
The heat offusion of aluminum is 3.97 10^5 J/kg; the heat of fusion of mercury is 1.18 10^4. What is the effeciency of this engine?
Determine the velocity of shearing along the shear plane and the velocity of sliding at the tool-chip interface and find the work done per minute in shearing the metal and against the friction.
liquid propane c3h8 enters a combustion chamber at 25 c at a rate of 1.2 kgmin where it is mixed and burned with 150
a vertical pipe conveying water tapers from 50 mm in diameter at the top to 25 mm in diameter at the bottom in a length
for a certain material failures were reported after 3000 hours at 650 c and 186 hours at 700 c when loaded at 250 mpa.
electronic components mouted on a flat plate are cooled by convection to the surroundings and by liquied water
Sketch the fully annotated velocity triangles for a Parsons turbine stage. Use your sketch to show that the specific work produced per stage is given as w_stage = (C_b)^2 [1 + 2(f/C_b)(cot(B_1))].
what is the reason for the change in enthalpy between the throttle valve and the evaporator in a practical refrigeration cycle that is using R12 refrigerant.
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