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A closed feedwater heater for a steam power plant operates as shown in the figure below. High-pressure liquid water at 10 MPa and 300C enters a series of heating tubes. Steam at 1.5 MPa and 95% quality is sprayed over the tubes and allowed to condensate. The saturated liquid is subsequently allowed to leave the device at station 4. We assume that the high-pressure water is heated up to the saturation temperature of the condensing steam. We wish to calculate the mass of steam required per unit mass of incoming liquid. The heater is assumed to be well insulated.
the load is being lifted upward at a constant rate of 9 ms relative to the crane boom ab. at the instant shown the boom
Find the stress in both members shown below and what steel specifications (types of steel) are suitable for structural applications?
a weighted piston maintains the pressure of a piston cylinder at 200 psia. initially the system contains no mass. a
measure the velocity of air. If the deflection deflection (the vertical distance between the fluid levels in the two arms) is 7.3 cm, determine the air velocity. Take the density of air to be 1.25 kg/m3.
water flows as two free jets from the tee attached to the pipe shown below. thenbspexit speed is 15 ms. if viscous
two concentric helical compression springs made of steel and having the same length when loaded and when unloaded are
Block A has a mass of 3 kg and B has a mass of 5 kg. If the system is released from rest, determine the velocity of each block in t=4s. Neglect the mass of the pulleys.
the aluminum plate of thickness t 3.5 mm. is to be designed so the maximum stress remains below 100 mpa. the hole must
discuss whether the following situations should be modeled as closed systems or open systems. clearly define the
a pipeline used for the transport of crude oil is buried in the earth such that its centerline is a distance of 1.5m
A body with a plane stress field has material properties E, ν and has the following displacement field
consider a 40 gal. 40000 btuhour electric hot-water heater. assume the controls are set to heat water to 140 degree f
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