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Gasoline at 20°C flows at 0.06 m3 /s through a 15-cm pipe and is metered by a 9-cm long-radius flow nozzle (Fig. 6.40a). What is the expected pressure drop across the nozzle?
Perform a full exergy accounting, in kJ, of the electricity supplied to the water heater. Model the water as incompressible with a specific heat c 5 4.18 kJ/kg ? K. Let T0 5 23°C.
oxygen is adiabatically and reversibly expanded in a nozzle from 200 psia and 600degf to 70 psia. determine the
a 100kg pure iron block at 27 degrees c is dropped into an insulated rigid tank that contains 0.1m3 of unused engine
A small fan moves air at a mass flow rate of 0.004 lbm/s. Upstream of the fan the pipe diameter is 2.5 in., the flow is laminar, the velocity distribution is parabolic, and the kinetic energy coefficient 1, is equal to 2.0. Downstream of the fan, the..
propane is to be burned with 15.0 excess air. before entering the furnace the air is preheated from 32f to 575f. at
An unsuited free diver can work in a pressure of up to 490KN/m^2 and a suited diver in pressure of up to 1815 KN/m^2. Calculate the maximum depths at which they might work in sea-water which has a specific gravity of 1.03.
Water flows through a duct of varying area. The difference in stagnation pressures between two sections is 4.5 x 10^5 N/M^2. If the water remains at a constant temp, how much heat will be transferred in this lenght of duct?
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.
1. An engine using a polyatomic (atoms not in a row) ideal gas is driven by this cycle: from A to B, the pressure increase to 3 times its original pressure while keeping V constant; from B to C, it expands adiabatically until it reaches 4 times th..
The gun barrel has a mass of 500 kg and a recoil spring of 300 N/m. The barrel recoils 1 m on firing. Determine the (i) initial recoil velocity of the gun barrel, and (ii) critical damping coefficient of the dashpot engaged at the end of the recoi..
Derive the equation of motion using the Lagrange formulation, linearize the equation, and compute the system's natural frequency.
a gas turbine has two stages of ideal compression expansion intercooling and reheating. air enters the first compressor
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