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8.26 In the preliminary design of a power plant, water i
chosen as the working fluid and it is determined that theturbine inlet temperature may not exceed 5208C. Based on expected cooling water temperatures, the condenser is to operate at a pressure of 0.06 bar. Determine the steam generator pressure required if the isentropic turbine efficiency is 80% and the quality of steam at the turbine exit must be at least 90%.
Considering Reheat and Supercritical Cycles
8.27 Steam at 10 MPa, 6008C enters the first-stage turbine of an ideal Rankine cycle with reheat. The steam leaving the reheat section of the steam generator is at 5008C, and the condenser pressure is 6 kPa. If the quality at the exit of the second-stage turbine is 90%, determine the cycle thermal efficiency.
What flow measuring devices are commonly used in industry? Explain the functioning of one such device.
A fan with a diameter of 12 inches operates at a voltage of 120V with a current draw of 0.5 amps. The manufacturer claims the average velocity of air leaving the fan is 33.1 ft./s under standard conditions. Standard air has a density of 0.075 lb mass..
Complete the sketch of the obtuse triangle. It must have an area of 1.75 in.2. Prove the geometry by dimensioning the sketch and showing the area calculation. Show only those dimensions needed for the area calculation. Note: each grid unit = .25 i..
Sketch the fully annotated velocity triangles for a Parsons turbine stage. Use your sketch to show that the specific work produced per stage is given as w_stage = (C_b)^2 [1 + 2(f/C_b)(cot(B_1))].
Write a one-page summary of the requirements, qualifications, and/or skills the five employers are seeking in the candidates, indicating which ones you currently lack.
Two-tenths of a pound of air at 2 atm and 540 degrees R is trapped within a syringe by a plunger at one end and a stopcock at the other, a shown in Fig. P4.103. The stopcock is opened and the plunger moved to inject the trapped air into a container t..
a tensile sample of width 10mm contains an internal crack of length 0.3mm. when loaded in tension the crack suddenly
consider the sysstem shown in figure 3-45 where m 2 kg b 4 nxm and k 20 nm. assume that x0 0.1 m and xdot0 0. the
liquid water at 0degc weighs 9810 nm3 and ice at the same temperature weighs 8992 nm3. consider a system which is
a 4 kg object traveling at 60 ms enters an insulated vat of 20 kg of incompressible fluid c 2.0 kjkgk and comes to
the bocks sits at rest on the sloping plane. the plane exerts two components of force on the block. the normal
Several of the new city council members "are up in arms" over the new annual fee and cost structure. However, they do not want to build more fire station capacity or own a lader truck that will be used an average of only 20 times a year.
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