Gas Turbines

What is a gas turbine? How it works and what are different types of gas turbines? A gas turbine is a rotary engine. In a gas turbine plant, the air is compressed in a rotary compressor and passed into a combustion chamber where fuel is burnt. The products of combustion are then made to impinge over rings of turbine blades with high velocity and work is produced.

The gas turbines are classified as follows:

1. According to the path of working substance

(a) Closed cycle gas turbines
(b) Open cycle gas turbines, and
(c) Semi-closed gas turbines.

2. According to the process of heat absorption

(a) Constant pressure gas turbines, and
(b) Constant volume gas turbines.

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