Heat Engines and Classification of Heat Engines

Definition of Heat Engine

Before defining and doing Classification of Heat Engines let us first define Engine. An Engine is a device one form of energy into another form.  Hence, a heat engine is a device converts chemical energy of fuel into thermal energy and utilize this thermal energy to perform useful work.

Please refer following link to read heat engines in detail – Heat Engines

Classification of Heat Engines

Heat Engines can be broadly classified into Internal and External Combustion Engines. Internal Combustion Engines are the Engines in which fuel is burned inside the cylinder. External Combustion Engines are the Engines in which fuel is burned outside the cylinder and with the help of working fluid, brought to cylinder. Both the types of Heat Engines can be divided into Rotary and Reciprocating each. In Rotary Engines work is obtained from the heat with the help of Rotary devices (e.g. Turbines). In reciprocating Engines heat is converted to the work with the help of reciprocating mechanism (e.g. piston and cylinder).

Below are some short forms given for convenience.

IC stands for Internal Combustion

EC stands for External Combustion

Internal Combustion Engine
Internal Combustion Engine

 

 

 

External Combustion Engine
External Combustion Engine

Heat Engines

  1. IC Engines

(i) Rotary

  • Open Cycle Gas Turbine
  • Wankel Engine

(ii) Reciprocating

  • Gasoline Engine
  • Diesel Engine
  1. EC Engine

(i) Reciprocating

  • Steam Engine
  • Stirling Engine

(ii) Rotary

  • Steam Turbine
  • Closed Cycle Gas Turbine

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