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A rigid tank, 0.4 m^3, contains air at 400 kPa and 30*C and is connected by a valve to a piston-cylinder device with zero clearance. The mass of the piston is such that a pressure of 200 kPa is required to raise the piston. The valve is now opened slightly, and air is allowed to flow into the culinder until the tank pressure drops to 200 kPa. During this process heat is transferred to the system to maintain the air within the system at 30*C. Determine this heat transfer (kJ).
what effect do finned surfaces have on the overall heat transfer coefficient and hence the performance of a heat
In an air-water vapor mixture at 30°C, the partial pressure of the water vapor is 1.5kPa, and the partial pressure of the dry air is 100.5kPa. What is the relative humidity of the air-water vapor mixture?
steam enters an adiabatic turbine steadily at 8 mpa and 500 c through an inlet with cross-section area of 0.041767 m2
The temperature on the faces of a plane wall 15cm thick are 375 and 85?.The wall is constructed of a special glass with the following properties:k=0.78W/m·?,ρ=2700Kg/m³,Cp=0.84KJ/Kg·?.What is the heat flow through the wall at steady-state cond..
Hazen-Williams Formula- Find the Diameter of a Pipe, The length of cast-iron pipe is to be 4200 ft., and the head causing flow is to be 12.6ft. After the pipe has been in service 5 years, it is expected to discharge water at a rate equal to 3.2 cf..
two sites are being considered for wind power generation. on the first site the wind blows steadily at 7 ms for 3000
a 4 l volume of pressure cooker in a kitchen operates at 200 kpa with an exit area of 10 mm2. with well controlled heat
it is desired to design a system to keep a 1-million-galon capacity water tank filled. the plan is to use a centrifugal
consider the case of a knife whose leading edge is the z-axis and the blade covers the half plane defined by x 0.
a 10 m3 oxygen tank is at 15 degree c and 800 kpa. the valve is opened and some oxygen is allowed to escape until the
(a) Find the speed of the bucket (b) How fast must the bucket move at the top of the circle so that the rope does not go slack?
in a chemical processing plant glycerin flows over a 1 m long heated at plate at free-stream conditions v 3 ms and t1
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