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A tank of volume V. is filled initially with air at atmospheric density pa,. Beginning at t = 0, a pump delivers to the tank a mixture of air and water. The volumetric inflow rate to the pump is Q, half of which is water having a density pw, and the other half is air at the densitypat . Once inside the tank, the water falls to the bottom, occupying a volume Vw(t) that increases with time (see Figure 1). The air rises to the top of the tank, forming a volume with uniform density pa(t). In terms of the known quantities V. , pat , Q and pw derive expressions for Viv(t) and pa(t) as functions of time t.
the electric heating systems used in many houses consist of a simple duct with electrical resistance wires. air is
how to solve set of ordinary differential equations of initial value problem in matlab using numerical integration
a pressure vessel of radius 11.0 in is filled with a gas at a pressure of 550.0 psi gauge. the top of the vessel is
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consider a coal-fired steam power plant that produces 350 mw of electric power. the power plant operates on a simple
at a surface cutting speed of 190 mmin the productive tool life was 60 minutes. at a surface cutting speed of 225 mmin
a system consisting of 3 lb of water vapor in a piston- cylinder assembly initially at 350degf and a volume of 71.7 ft3
An air conditioner can produce a 120 kJ/min cooling effect while rejecting 2.5kW of heat. What is its COP and the electricity it consumes? An inventor claims to have designed a system which can produce the same cooling rate but consumes only 0.05kW e..
two jets of air of equal mass flow rate mix thoroughly before entering a large reservoir. one jet is at 400 k and 100
air is compressed in a steady-flow compressor via a polytropic process from 15 psia and 60ordmf state 1 to 75 psia and
A rigid adiabatic container in a room with a barometric pressure of 100 kPa is divided into two unequal volumes as shown. V1 = 0.108 m3 and contains air (R = 0.2870 kJ/kg-K, k = 1.40) at a gauge pressure of 32 kPa and temperature of -3°C.
heat is flowing through an annular wall of inside radius r0 and outside radius r1. the thermal conductivity varies
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