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, see03.100.70
Energy efficiency of buildings, see91.120.10
27.020 Internal combustion engines
Internal combustion engines for current generating sets, see29.160.40
Internal combustion engines for road vehicles, see43.060
Marine engines, see47.020.20
27.040 Gas and steam turbines. Steam engines
Hydraulic turbines, see27.140
27.060 Burners. Boilers
27.070 Fuel cells
27.075 Hydrogen technologies
Industrial application of gases, see71.100.20
27.080 Heat pumps
27.100 Power stations in general
Including thermal power plants
Nuclear power plants, see27.120.20
Hydraulic power plants, see27.140
Solar power stations, see27.160
Wind turbine systems, see27.180
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, see23.120
Refrigerants, see71.100.45
Household refrigerating appliances, see97.040.30
Commercial refrigerating appliances, see97.130.20
27.220 Heat recovery. Thermal insulation
Thermal insulation of buildings, see91.120.10