Benefits
In addition to the fact that CHP generation reduces the environmental load,
district heating is produced with renewable fuels to an increasing extent. At
their best, carbon dioxide emissions (CO2) will reduce to almost half compared
with separate production. Other emissions, such as nitrogen oxides and particle
emissions, can be monitored with emissions restrictions. Finland is also a
leading country in the world in the flue gas cleaning technology.
It is estimated that cogeneration reduces the total consumption of primary
energy in Finland by about 11 per cent. Cogeneration saves more fossil fuels, a
total of some 20 per cent, because most CHP plants are located in a
decentralised way throughout forest-covered Finland close to local energy
sources.
Cogeneration alone saves one-third of energy compared with separate
production heat and electricity in own processes.
Energy flows in CHP and condensing processes
Cogeneration | Separate
production |
Fuel requirement 100 | Fuel
requirement 145 |
Efficiency 75 % | Efficiency
52 % |
| |
1.Production losses 14 |
1. Production losses 53 |
2. Electricity transmission losses 4 |
2. Electricity transmission losses 4 |
3. Heat transmission losses 7 | 3.
Building-specific production losses 13 |
