Stirling Heat Engines

Stirling engines have not yet found use in the automotive industry
but have been used in submarine engines!

~ It is impractical for the use of Stirling Engines for many applications (Trucks & Cars will not function with a Stirling Engine).
~The reasoning for this is because the heat source is external.The engine takes a longer time to respond to the changes in the amount of heat being applied (in the cylinder)/ Making it harder for the heat to be conducted and into the gas.

Heat, Temperature, and work are the most important fundamental concepts within the Stirling engine and cycle. Time is important for the engine to warm up before there is any use of Power.

Stirling Engines have a fixed amount of gas, which is sealed inside the engine.
The Cycle behind it involves a series of 4 events that change the pressure of the gas. Causing it to do work.
The Pressure will increase if the fixed volume of space is raised & the temperature of the gas.
The temperature of the will increase if the fixed amount of gas is compressed and if the volume of space is decreased.

Peltier Device

Scientist named Peltier in 1834 discovered the first inverse of the seebeck effect, “Peltier effect”.

It is small heat pump found by a thermocouple & the application of a voltage. The temperature difference creates this (thermo-electric cooler).
Peltier Elements are active heat pumps, that can be used to cool components. And below ambient temperature, which does not include conventional cooling or heat pipes.

The Peltier Device comes in various forms and shapes.

Suprisingly the Peltier Device actually effects the electrical current flows through two dissimilar conductors.

Dependng on the direction of the flow it either absorbs or releases the heat.

(Food service equipement is more common now for the Peltier device as well as in A/C units).

These devices perform well on small isolated situations where they are needed the most.