In 1872, an American engineer, George Bailey Brayton advanced the study of heat engines by patenting a constant pressure internal combustion engine, initially using vaporized gas but later using liquid fuels such as kerosene. In this case assume a helium gas turbine with single compressor and single turbine arrangement. Since less energy is rejected from the cycle (Q L decreases), the thermal efficiency is expected to increase. Brayton cycle (or Joule Cycle) is a thermodynamic cycle upon which a Gas turbine works. Brayton Cycle Reading Problems 9-8 → 9-10 9-78, 9-84, 9-108 Open Cycle Gas Turbine Engines • after compression, air enters a combustion chamber into which fuel is injected • the resulting products of combustion expand and drive the turbine • combustion products are discharged to the atmosphere • compressor power requirements vary from 40-80% of the power output of the turbine (re- Let assume the closed Brayton cycle, which is the one of most common thermodynamic cycles that can be found in modern gas turbine engines. The Open Brayton Cycle is the representation for the Internal Combustion Engine, where the working fluid will not be reused and it will be exhausted to the atmosphere. This principle is used in the jet propulsion. This open Gas turbine cycle is the Ideal for the Brayton cycle. Brayton cycle with regeneration. Brayton cycle, an ideal cycle for gas turbine engine in our recent post. Gas turbines are used to generate power at many places. Brayton Cycle – Problem with Solution. Brayton Cycle – Turbine Engine. Figure.8.19. Brayton cycle: The ideal cycle for gas turbine engine In our previous post, we were discussing working principle of open cycle gas turbine . We have also seen the effect of regeneration on Brayton cycle and effect of inter-cooling on Brayton cycle in our previous posts. Below are P-V and T-S Diagrams of the Brayton (or Joule) Cycle. For an ideal regenerator, the temperature T 5 will be equal to T 4 and similarly T 2 will be equal to T 6. Brayton cycle is named after George Brayton, an American engineer who developed it. We have also already discussed that closed cycle gas turbine engines are usually used in nuclear power stations and also used as standby power unit for the hydro electric power stations.