Cogeneration CHP

1
Co-generation (CHP)

• Combined Heating and Power
• A combined production of electric energy and heat

2
Micro co-generation

• - Micro cogeneration, as defined by the EU
  Directive 2004/8EC
• CHP (Combined Heating and Power) and CCHP (
  Combined Cooling, Heating and Power) for
  production lower than 50Kw

3
Mini co-generation

• - Mini co-generation, should be defined for
  production lower than 10 KWel. It is useful for
  domestic application or to power small industrial
  activities.

4
A traditional scenary
1. Production ef electric energy (big electric
power plant)
2. An high voltage power line.
3. Voltage transformer. Micro distribution
4. Domestic users
5
A traditional scenary

• Every passage from production to final users
  involves a waste of energy. The overall
  efficiency decreases.
• Moreover every house needs a boiler to be heated

6
A new scenary (mini co-generation)
Thermal energy
Energy lost
Electric energy
7
A significant energy saving

• The most efficient engine depends on the
  application. Anyway we can compare the overall
  efficiency of the thermo-electrical system with
  the ISE indicator (energy saving indicator)
• 
  Efuel
• ISE ( 1
  ) X 100
• Eel
  Qrec
• h el,ref x h grid,ref
  h th,ref

8
A significant reduction ef emission

• Reduction of Co2 proportional to the amount of
  energy saved
• Reduction of the global emission (NOx CO HC, fine
  dust) related to traditional power stations

9
What technologies?

• Micro gas turbine
• Stirling Motors
• Fuel cell