General discussion of Stirling Engine part 4

4. Constracture of Stirling Engine

Stirling Engine output the work by repeating 4 thermal prosesses; isothermal heating, isovolumetric expansion, isothermal cooling and isovolumetric compression. But, the only one piston can't make this motion. Practical Stirling engine has tow displace volumes one of which is kept high temperature and next is kept low. Abobe 4 prosesss are accomplished by that The working gas of engine is reciprocated between these tow volume.
And practical engine added three elements of heat exchanger; Heater, cooler and Regenerator, for exchanging heat more effectively.

• E： Expansion space
  The working gas heated up by the Heater flow into this space. this space displaced by power piston in 2 piston type Stirling Engine, or displacer piston in displacer type Stirling engine.

• H：Heater
  This element heat up the working gas.

• R： Regenerator
  This element receive the heat from the woking gas while the gas is flowing from high temperature end to low temperature end, or give charged heat to the gas while the gas is flowing from low temperature end to high temperature end. Stirling Engine's high thermal efficiency is obtained by this action, then the performance of this element effect the engine performance significantly.

• K： Cooler
  This element cool down the working gas.

• C： Compression space
  The working gas cooled by the Cooler flow into this space. this space displaced by power piston in 2 piston type Stirling Engine, or displacer piston and power piston in displacer type Stirling engine, mostly.

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