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A power plant burns 1000 kg of coal per hour to produce a net output of 500 kW of electrical power. Assuming each kg of coal produces 6 MJ of energy determine: The rate of heat rejection to the sink. The overall thermal efficiency of the power plant. A heat engine accepts 700 kJ of heat from a thermal source and rejects 250 kJ of that heat to a thermal sink. What is the work output of the heat engine? What is its thermal efficiency?
the diagonal of a long triangular bar 45-45-90 triangle section is well insulated. while sides of equivalent length are
Important information about Overall Heat Transfer Coefficient A copper sphere of internal diameter 2 m and wall thickness 40 mm is insulated with 75 mm of expanded polystyrene
a sketch three-dimensional views of the unit cell of a b.c.c. crystal showing a 100 plane a 110 plane a 111 plane and a
a packed bed is composed of crushed rock with a density of 175 lbmft3nbspof such anbspsize and shape that the average
a gear reduction system consists of three gears a b and c. gear a starts from rest at time t0 and rotates clockwise
Effect of pressure on temperature and density of air for an adiabatic process, The pressure is to be raised from atmospheric to 7 psi (4.83 bar). The process is adiabatic, and the volume is constant and unknown.
the slotted link is pinned at o and as a result of the constant angular velocity theta dot 3rads it drives the peg p
Determine the minimum coefficient of static friction between the crate and the truck so that the crate does not slide relative to the truck.
a 2 m3 tank containing nitrogen at 25oc and 500kpa is connected through a valve to another tank containing 3kg of
The hull of a boat has a volume of 150 m3, and the total mass of the boat when empty is 8560 kg. Determine how much load this boat can carry without sinking (a) in a lake and (b) in seawater with specific gravity of 1.03.
The mean diameter of a conical friction clutch is 250mm with a width of the conical surface being 50mm. The clutch is lined with a material having a coefficient of friction of 0.25
Calculate the corrosion rate in mpy, pm/y, and mdd. What is the ranking of this carbon steel in this acid environment and determine the effect of time on the solution corrosiveness and the carbon steel corrodibility.
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