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A gas turbine stage has an initial absolute pressure of 350 kPa and a temperature of 565°C with negligible initial velocity. At the mean radius, 0.36 m, conditions are as follows:
Determine the flow coefficient and stage loading factor at the mean radius and the reaction at the hub, radius 0.31 m, at the design speed of 8000 rev/min, given that stage is to have a free-vortex swirl at this speed. You may assume that losses are absent. Comment upon the results you obtain. Take Cp = 1.148 kJ/(kg °C) and γ = 1.33.
liquid ammonia is stored in a tank at 24 deg c and a pressure of 2.4 x 106 pa absolute. a leak develops at the bottom
a person a is trying to keep his balance while on sled b that is sliding down an icy incline . letting ma 78 kg and mb
an array of power transistors dissipating 5 w of power each are to be cooled by mounting them on a 25cm x 25cm square
a 50 kg winding drum 75 cm in diameter is used to reel in cable. it is moving at the rate of 2 revolutions per second.
a steam power plant uses an ideal rankine cycle. superheated vapor enters the turbine at 8 mpa 480c. the condenser
carbon dioxide enters an adiabatic diffuser at 220 ms 80 kpa and 127 degc at a rate of 1.5 kgs. if the carbon dioxide
A cold air-standard Brayton refrigeration cycle has a pressure ratio of 4 and a refrigeration rate of 15 kW. Air enters the compressor at -7oC. The high pressure air is cooled to 27 oC by rejecting heat to the surroundings. It is further cooled to -1..
A piston-cylinder assembly contains a two-phase liquid-vapor mixture of H2O at 160 lbf/in.2 with a quality of 70%. The mixture is heated and expands at constant pressure until a final temperature of 480oF is reached. Determine the work for the proces..
steam at 900 degrees f and 1200 psi enters an insulated turbine operating at a steady state through a 4 foot diamter
automotive exhaust systems often use two catalytic converters. the exhaust temperature is a key factor which determines
a rigid container is filled with 1 kg of water.the volume of the container is 125-l.the initial pressure of the
By supplying energy at an average rate of 24,000 kJ/h, a heat pump maintains the temperature of a dwelling at 208C. If electricity costs 8.5 cents per kW ? h, determine the minimum theoretical operating cost for each day of operation if the heat p..
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