What is the purpose of the flame tubes connecting the cans in a can-annular combustor?
In most can-annular designs each can is connected with the can next to it through a ‘cross-over tube’. The cross-over tubes are used to equalize the pressure in each can; they are also used during start-up to allow the flame to travel from the two igniter cans to all the other cans.
What is Cannular combustion chamber?
An arrangement in which flame tubes are laid out within the casing, resulting in weight reduction and an ease-of-construction advantage.
How many burners are placed in can-annular combustors in gas turbines?
How many burners are placed in can-annular combustors in gas turbines? Explanation: Multiple or single burners are evenly spaced in the combustor. 2. Silo combustors are mounted Internal to gas turbine body.
What are the important factors affecting combustor design?
COMBUSTION CHAMBER PERFORMANCE: The main factors of importance in assessing combustion chamber performance are pressure loss, combustion efficiency, outlet temperature distribution, stability limits and Combustion intensity.
What does a turbine do in a jet engine?
Turbine: The turbine section is another series of rotating blades that are driven by high-pressure air leaving the combustor. The turbine blades catch the rapid airflow, and rotate to drive a spinning shaft that turns the fan and compressor at the front of the engine.
What kind of can annular combustors are used?
Can-annular combustors can be of the straight-through or reverse-flow design. If can-annular cans are used in aircraft, the straight-through design is used, while a reverse-flow design may be used on industrial engines. 2.12. GE frame 6 gas turbine with DLE can-annular combustors.
Which is an advantage of a can annular burner?
The advantage to the can-annular design is that the individual cans are more easily designed, tested, and serviced. The details of mixing and burning the fuel are quite complex and require extensive testing for a new burner.
What are the different types of gas turbine combustors?
Types of gas turbine combustors: (A) can, (B) annular, and (C) can-annular [ 11 ]. Annular type: This type is a modern combustor that is shown in Fig. 4.19B. Annular combustors have separate combustion zones, a continuous liner, and casing in a ring (the annulus).
Which is the best design for a combustor burner?
A compromise design is shown at the right. This is a can-annular design, in which the casing is annular and the liner is can-shaped. The advantage to the can-annular design is that the individual cans are more easily designed, tested, and serviced.