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An ideal Brayton cycle power plant operates with a regenerator of 100% effectiveness.
The air enters the compressor at 95 kPa and 290 K. At the turbine inlet, the air is at 760 kPa and 1100 K. Heat is added at a rate of 60,000 kJ/s in the combustor. Determine the net power delivered and the cycle efficiency. What is the percent increase in the efficiency compared to an otherwise identical system with no regeneration. Assume “cold air-standard cycle” for both systems above.
Steam at 800 kPa and 300 C is bled off from a large supply line, passed through a valve, and allowed to enter an initially evacuated, uninsulated tank with a volume of 0.3 m3.
A 3-mi section of a two-lane, two-way highway located in a mountainous terrain is to be designed to carry a peak hour volume of 750 vehicles. Using the operational level of analysis
A stratified lake could be idealized as two layers: with 7.0 m of fresh water on top and 10.0 m of cold water (specific gravity = 1.02) on the bottom. What are the pressure heads at the interface and at the bottom of the lake, in terms of water col..
A-Olympus Mons, a 69,000-foot-tall mountain on Mars, is the largest volcano in the solar system. Its circumference at the base is large enough to cover almost the entire state of Colorado.
to apply shock loading to an artillery shell, a 20kg pendulum A is released from a know height and strikes impactor B at a known velocity v (theta). impactor B then strikes the 1 kg artillery shell C.
The pressure in a tire depends on the temperature of the air in atire. When the air temp is 25 C, the pressure gage reads 210KPa. If the volume of the tire is 0.025 m3
A constant head permeability test was conducted on a clean sand sample. The diameter and length of the test specimen were 10 cm and 12 cm respectively.
Water in the amount of 1 lb is contained in a rigid closed tank. Initially the water has a quality of 0.4 at a pressure of 10 lbf/in2. Through a stirrer, work is provided to the water in the tank until the pressure quadruples.
At a specified point on a highway, vehicles are known to arrive according to a Poisson process. Vehicles are counted in 20-second intervals, and vehicle counts are taken in 120 of these time intervals.
The outside and inside diameters of 75 mm and 63 mm, respectively. A strain gauge is placed on the outside of the hollow segment of the tube to measure normal strains in the longitudinal direction. assume E=73 GPa and Poissons ration v=0.33. strai..
A vertical curve of 600 ft in length is used to connect two tangents with the following locations: Tangent 1.- Point 1, Sta = 59+00, El = 1250.0' Point 2, Sta = 72+00, El = 1190.0' Tangent 2.- Point 1, Sta = 72+00, El = 1190.0' Point 2, Sta = 84+0..
The pins on the frame at B and C each have a diameter of 0.25 in. If these pins are subjected to double shear, determine the average shear stress in each pin.
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