Engineering, 14.09.2019 02:20 benjaminbooth10
Water at a pressure of 15 bar at a temperature of 30°c enters a boiler, where it is heated to 250°c at constant pressure. steam leaving the boiler passes into a throttle which reduces the pressure to 10 bar. the steam is then passed through a small turbine, exiting at atmospheric pressure at 110°c. draw a schematic diagram. 1. how much heat is added per kg to the water by the boiler? 2. find the temperature of the steam leaving the throttle. 3. if the turbine produces 15kw of work, find the mass flowrate of steam through the system.
Answers: 1
Engineering, 03.07.2019 15:10
Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.
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Engineering, 04.07.2019 18:10
The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false
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Engineering, 04.07.2019 19:20
Acarnot refrigerator operates in a room in which the temperature is 21°c and of power when operating. if the food compartment of the refrigerator is consumes 3 kw to be maintained at 2°c, determine (a) the coefficient of performance of the cycle and (b) the rate of heat removal from the food compartment. refrigerator cycle that has a higher coefficient of performance than that of the discussed (e) is it possible to develop a carn ot refrigerator, operating between the same temperature limits? explain
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Engineering, 06.07.2019 03:10
An electrical kettle is made out of stainless steel,weighs two pounds (when empty) with a heating element that consumes 2 kw of electricity. assuming that the water and the kettle are at the same uniform temperature at any moment of time, calculate the shortest possible time to bring 2 quarts of water from room temperature to the onset of boiling.
Answers: 1
Water at a pressure of 15 bar at a temperature of 30°c enters a boiler, where it is heated to 250°c...
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