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Repeat Problem 9.49, but assume a closed FWH instead of an open FWH. A single pump is used to pump the water leaving the condenser up to the boiler pressure of 3.0 MPa. Condensate from the FWH is going through a drip pump and is added to the feed water line, so state 4 is at T6.
Problem 9.49
Consider an ideal steam regenerative cycle in which steam enters the turbine at 3.0 MPa, 400?C and exhausts to the condenser at 10 kPa. Steam is extracted from the turbine at 0.8 MPa for an open FWH. The feed water leaves the heater as saturated liquid. The appropriate pumps are used for the water leaving the condenser and the FWH. Calculate the thermal efficiency of the cycle and the specific network.
The height of the instrument during this measurement was 1.60m From the same setup from point A, the zenith angle and slope distance toward point B are measured as 83deg 32'30" and 186.23m respectively, while the elevation of point B is 315.34m AM..
Determine the unstretched length of spring AC if a force P = 110 lb causes the angle theta = 60^circ for equilibrium. Cord AB is 2 {rm ft} long. Take k = 50;{rm lb/ft}
A reverse osmosis plant desalinates 5*10^6 L/day of feedwater containing 1500 mg/l of salt, yeilding 3*10^6L/day of product water with 75 mg/l of salt. What would be the salt concentration be in the brine?
a level is setup midway between X and Y reads 5.572 ft on X and 4.946 ft. on Y. The level is setup very close to X and a reading of 4.666 ft. is taken on X. what should the reading be at Y to adjust any collimation error of the level
The slotted arm OA forces the small pin to move in the fixed spiral guide defined by r = Kθ Arm OA starts from rest at θ = π/4 and has a constant counterclockwise angular acceleration.
An operator at a wastewater treatment plant decided to increase the SRT from 5 days to 10 days. How will this change affect: a. the oxygen requirement b. MLVSS in the aeration tank c. the effluent BOD or COD d. and the sludge generation
What are the major nutrients required for growth of microbial population in wastewater treatment plants. List the major differences and similarities between hetrotrophic bacteria and nitrifying bacteria.
Create a depreciation schedule showing annual depreciation amounts and end-of-year book values for a $26,000 asset with a 5 year service life, using the MACRS depreciation method.
a direct shear cell 25.4cm x 25.4 cm in plan is filled with dry sand. a normal load of 6kN is applied to the sample, and the shear failure is 3.5kN. What is the anle of internal friction for the sand
A 100 lb door has a weight of 100 lbs and a center of gravity at point g. determine the resultant force at points A and B. Point B resists forces in the X and Y directions. Point A resists forces in the X, Y and Z directions. The bottom horizontal ed..
Design and draw complete details of the extrusions and connections. Select a surface finish for the aluminum. What type of glass will you use?
A sanitary landfill project needs an import soil for use as an impervious cap over the refuse. The design engineer desires a soil with a high clay content because it will help keep water out of the landfill.
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