Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Fill in the blank: The compression in the Otto cycle involves an isentropic process in a closed piston-cylinder assembly, whereas the compression in the ideal Brayton cycle involves an isentropic process in a(n) (Type your answer here) operating at steady state.
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- A newly purchased sedan car operates on an ideal thermodynamic cycle. The engine has acompression ratio of 10. The ambient air pressure is 1 bar while temperature is 21 ºC. Themaximum temperature in the engine is 1600 K. Draw the ideal power cycle and label it.Utilizing the air-standard assumptions, determine (a) the gas temperature at the exits of thecompression and the expansion processes, (b) the specific works of compression, expansionand net, (c) heat supplied to the engine and (d) the thermal efficiency.arrow_forward3. In a gas turbine plant air is compressed from 1.01 bar and 15 °C through a pressure ratio of 5. It is then heated in a combustion chamber at constant pressure to a temperature of 700 °C and expanded to atmospheric pressure in a turbine. The isentropic efficiencies of compression and expansion are respectively 0.8 and 0.85. Calculate (a) the cycle efficiency and (b) the work ratio. Assume that the properties of air do not change with temperature and may be taken as Cp = 1.005 kJ/kg K and y = 1.4.arrow_forwardAssume a basic (non-regenerative) ideal Brayton cycle where air modeled as IG with variables specific heat. The gas-turbine engine has the following operational parameters: Inlet Air Temperature:537 R Inlet Air Pressure:14.696 psia Compressor Pressure Ratio (rp):6.0 Firing Temperature:2400 R Heat Recovery Steam Generator: Assume that the exhaust from the gas turbine engine is directed to a heat recovery steam generator (HRSG)to produce wet steam (i.e. saturated vapor) at a pressure of 600 psia. Liquid water is supplied to the HRSG at 100F and 600 psia. The exhaust gas from the gas-turbine engine leaves the HRSG at the saturation temperature of the wet steam. With these conditions determine: a) the exit temperature of the wet steam (F), b) the intensive steam production rate, lbm-steam/lbm-exhaust gas. Absorption Chiller CHP: Assume the process steam from the HRSG is now used to drive an absorption chiller with COP of 0.7, and that the mechanical power of the gas-turbine engine is used…arrow_forward
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