A gas turbine cycle with a stage of reheat and regeneration operates under the conditions given below, as illustrated in the figure. The turbine efficiencies are 86%, and the compressor efficiency is 81%. Furthermore, the work output of the high-pressure turbine is just enough to drive the compressor. Determine the pressure at which the reheater operates. T1 = 1300 K, T6 = 3000 K, P1 = 450 kPa, P6 = 100 kPa

A spark ignition four-stroke cycle engine operates on an air-standard Miller cycle with no supercharger, and early intake valve closing (cycle 6-7-1-7-2-3-4-5-6 in Fig 3-15). Compression ratio is 8.2 and expansion ratio is 10.2. Cylinder conditions when the intake valve closes are T7 = 57°C and P7 = 100 kPa. Maximum temperature and pressure in the cycle are Imax = 3427°C and Pmax = 9197 kPa. Calculate: (a) Minimum cylinder pressure during cycle. [kPal (b) Pump work for one cylinder for one cycle. [ki] (c) Pressure in cylinder when exhaust valve opens. [kPa] 3 8, TDC BDC Specific Volume, v Pressure, P

A simple ideal Brayton cycle operates with air with minimum and maximum temperatures of 27°C and 727°C. It is designed so that the maximum cycle pressure is 2000 kPa and the minimum cycle pressure is 100 kPa. Determine the net work produced per unit mass of air each time this cycle is executed and the cycle’s thermal efficiency. Use constant specific heats at room temperature

Please help me with this as fast as possible and I will leave a like ::)) I am greatly appreciated!

The compression ratio of an Otto cycle as shown in the figure below is VA/VB = 9.00. At the beginning A of the compression process, 505 cm3 of gas is at 115 kPa and 20.0°C. At the beginning of the adiabatic expansion, the temperature is TC = 725°C. Model the working fluid as an ideal gas with ? = 1.40.

I need help on this assignment: Exhaust gases from the turbine of a simple Brayton cycle are quite hot and may be used for other thermal purposes. One proposed use is generating saturated steam at 110℃ from water at 30℃ in a boiler. This steam will be distributed to several buildings on a university campus for space heating. A Brayton cycle with a pressure ration of 6 is to be used for this purpose. Plot the following:(a) The mechanical power produced,(b) the flow rate of the produced steam,(c) the maximum cycle temperature, all as functions of the rate at which heat is added to the cycle.

If one measurement is conducted in the four processes and shows that the pressure ratio (P3/P2)in the adiabatic expansion is 1.2 times the pressure ratio (P4/P1) in the adiabatic compression, can you justify if it is a Carnot engine? Please give your reason