Stirling engine PPT

Stirling engines work by expanding and contracting gas in a piston, just like other kinds of engines such as petrol, diesel and steam engines. The big difference is that the gas Stirling engines use is completely self-contained or ‘closed’ so does not need to come from some sort of fuel source (like igniting petrol, or steam from a boiler). All you need to get a Stirling engine to go is a temperature difference of some sort that expands and contracts the enclosed gas.
Stirling engine PPT

The easiest way to produce a high-temperature difference is to burn things like waste material, oil, gas, hydrogen, etc. Burning a wide variety of stuff may be very handy, but tends not particularly environmentally friendly. Since only a temperature difference is required, you could use solar power or other naturally occurring heat sources to run a Stirling engine.
Stirling engines can be very energy efficient (more than 50% in some cases which is better than most high-efficiency gas or steam turbines and way better than internal combustion engines, which struggle to reach 25%), so even the ones designed to burn fuel produce less pollution than other types of engine.

Advantages and Disadvantages of Stirling Engine 

  • Various heat sources (solar, geothermal, nuclear energy, waste heat, biological)
  • Environmental friendly 
  • Heat is external and the burning of a fuel-air mixture can be more accurately controlled.
  • Operates at relatively low pressure and thus  are much safer than typical steam turbines
  • Less manpower needed to operate any type of commercial Stirling engine. 
  • The price: its cost is probably the most important problem, it is not yet competitive with other means well established. 
  • The ignorance of this type of engine by the general public. Only a few fans know it exists. It is, therefore, necessary to promote it. 
  • The variety of models prevents standardization and, consequently, lower prices.
  • Sealing problems
  • Heat transfers with gas are delicate and often require bulky apparatuses.
  • The lack of flexibility.