| ICS | Field |
|---|---|
| 27.010 | Energy and heat transfer engineering in general |
| 27.015 |
Energy efficiency. Energy conservation in general Including energy audits Energy management systems, see 03.100.70 Energy efficiency of buildings, see 91.120.10 |
| 27.020 |
Internal combustion engines Internal combustion engines for current generating sets, see 29.160.40 Internal combustion engines for road vehicles, see 43.060 Marine engines, see 47.020.20 |
| 27.040 |
Gas and steam turbines. Steam engines Hydraulic turbines, see 27.140 |
| 27.060 | Burners. Boilers |
| 27.070 | Fuel cells |
| 27.075 |
Hydrogen technologies Industrial application of gases, see 71.100.20 |
| 27.080 | Heat pumps |
| 27.100 |
Power stations in general Including thermal power plants Nuclear power plants, see 27.120.20 Hydraulic power plants, see 27.140 Solar power stations, see 27.160 Wind turbine systems, see 27.180 |
| 27.120 | Nuclear energy engineering |
| 27.140 |
Hydraulic energy engineering Including hydraulic turbines |
| 27.160 |
Solar energy engineering Including photovoltaic energy systems |
| 27.180 |
Wind turbine energy systems Including generation of electrical energy |
| 27.190 | Biological sources and alternative sources of energy |
| 27.200 |
Refrigerating technology Air-conditioners, see 23.120 Refrigerants, see 71.100.45 Household refrigerating appliances, see 97.040.30 Commercial refrigerating appliances, see 97.130.20 |
| 27.220 |
Heat recovery. Thermal insulation Thermal insulation of buildings, see 91.120.10 |