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A single-stage ideal regenerative steam cycle has a boiler pressure and temperature of 5000 kPa and 500 C, and a condensing pressure of 10 kPa. The extraction pressure is 500 kPa. If the regenerative heater is a closed heater with the condensate pumped into the line following the heater (TTD=7 C), find:
(i) the net work, in kJ/kg,
(ii) the work ratio
(iii) the thermal efficiency
A steel bar AC of length 6in and a varying cross-section is loaded as shown in fig 1. The bar is supported by a pin joint at A. which is made of an aluminum pin of unknown diameter.
a child drops a rock into a well and hears it splash into the water at the bottom exactly 2 seconds later. if she is at
a piston-cylinder contains 1.2 kg of saturated water vapor at an initial temperature of t1 200 oc.
a pistoncylinder arrangement is filled with helium gas. the gas is compressed with a polytropic process with nk. the
the earth spins about its own axis at an angular velocity omega. imagine an experiment where an object of mass m kg is
Use the bisection method to determine the drag coefficient (cd) needed so that a 80 kg bunjee jumper has a velocity of 36 m/s after 4 s of free fall.
a 5 kw pump operating at steady state receives liquid water at 100 kpa 15 c and delivers it to a point 6 m above the
A hydraulic system is powered by a 9 kw motor and operates at 11 MPa. Assuming no losses, what is the flow rate through the system in units of m³/s?
steam in a piston-cylinder assembly undergoes a polytropic process with n2 from an initial state where p 500 psia and
An autoclave contains 1000 cans of pea soup. It is heated to an overall temperature of 100°C. If the cans are to be cooled to 40°C before leaving the autoclave, how much cooling water is required if it enters at 15°C and leaves at 35°C? The speci..
A water brake is used to measure the power output of an engine, ?W . The water mass flow rate through the brake is m? = 7 kg s?1. Water temperatures at the brake inlet and outlet are T1 = 290K and T2 = 305K, respectively. The heat loss from the engin..
A 4 cylinder 1.6 liter SI engine has a compression ratio of 10, connecting rod length of 16.8cm, and a crank offset of 4.5 cm. The engine is operating at 3000 RPM and wide open throttle. The exhaust pressure is 100 kPa. The intake valve closes at 20 ..
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