A gas turbine power plant operating on an ideal brayton cycle has a pressure ratio of 8. The gas temperature is 320k at the compressor inlet and 1400k at the turbine inlet. Using the air-standard assumptions, determines: 1. The back work raio 2. The temperature at the exits of the turbine and exits of the compressor 3. The thermal efficiency in decimals

If the compressor of a Brayton cycle gas turbine operates at a pressure ratio 24.9, and the rate of heat transfer during the heat addition process is 590 kW, what is the net work out from the device? Take the working fluid to be superheated steam with a specific heat ratio of 1.33, and give your answer in kW to one decimal place.

A steady-flow system operating on the ideal Ericsson cycle can achieve the Carnot efficiency. One of the salient features of this cycle is the isothermal expansion through a heated turbine, as shown in Fig. a. Heat is added to the turbine such that the outlet temperature is equal to the inlet temperature, i.e. T₁=T₂, and the overall pressure ratio for this process is rₚ=P₁/P₂. However, an isothermal expansion through a heated turbine is very difficult to achieve in practical engineering applications. An alternate approach is two use a multi-stage expansion process with reheating. In this approach, the gas expansion process is carried out in multiple stages with reheating in between each stage. Consider the two-stage turbine expansion with reheating shown in Fig. b. The gas enters the first stage of the turbine at state A1, is expanded isentropically to an intermediate pressure Pₐ₂, is reheated at constant pressure to state B1, and is expanded in the second stage isentropically to the…