Table 4.
Technical specifications of representative commercially-available micro-CHP products [81]
| Micro-CHP type | Nominal electrical power (kWe) | Nominal thermal power (kWth) | Electrical to thermal ratio | Fuel |
|---|---|---|---|---|
|
| ||||
| Stirling engine | 0.8 | 5.5 | 0.15 | Automotive grade diesel |
| 1.0 | 7.5 to 12.0 | 0.08 to 0.13 | Natural gas | |
| 1.0 | 6.4 | 0.16 | Solar heat, biogas, and natural gas | |
| 1.0 | 6.0 | 0.17 | Natural gas, other fuels (biomass, solar and waste heat) under instigation | |
| 1.2 | 5.0 | 0.24 | Hydrocarbon, fossil fuel, biomass | |
| 1.4 | 5.4 | 0.26 | Pellets (wood) | |
| 2.0 to 9.0 | 8.0 to 25.0 | 0.08 to 0.25 | Bio-gas, natural gas | |
|
| ||||
| ORC | 1.0 | 6.8 to 18.0 | 0.06 to 0.15 | Natural gas, liquefied petroleum gas, etc. |
| 1.0 | 8.8 | 0.11 | Solar heat | |
|
| ||||
| Internal combustion engine | 1.0 | 3.3 | 0.30 | Natural gas, liquid propane |
| 1.0 | 2.5 | 0.40 | Natural gas, liquid propane | |
|
| ||||
| Fuel cell | 0.3 | 0.6 | 0.50 | Natural gas |
| 1.0 | 2.0 | 0.50 | Natural gas | |
| 1.0 | 1.8 | 0.56 | Natural gas | |
| 1.0 | 1.7 | 0.59 | Natural gas | |