- Carbon dioxide--Environmental aspects--Congresses (6)
- Combustion engineering--Congresses (4)
- Furnaces--Congresses (4)
- Power (Mechanics)--Congresses (4)
- Atmospheric carbon dioxide--Environmental aspects--Congresses (2)
- Climatic changes--Congresses (2)
- Energy industries--Environmental aspects--Congresses (2)
- Fans (Machinery)--Congresses (2)
- Fluidized-bed combustion--Congresses (2)
- Heat pumps--Congresses (2)
- Heat recovery--Congresses (2)
- Heat-transfer media--Congresses (2)
- Hydrogen as fuel--Congresses (2)
- Nature--Effect of man on--Congresses (2)
- Screw compressors--Congresses (2)
- Screw pumps--Congresses (2)
- Coal-handling--Technological innovations--Congresses (1)
- Compressors--Industrial applications--Congresses (1)
- Energy development--Congresses (1)
- Fossil fuels--Environmental aspects--Congresses (1)
- High temperature superconductivity--Congresses (1)
- Incineration--Waste disposal--Congresses (1)
- Industrial electronics--Congresses (1)
- Industries--Power supply--Congresses (1)
- Kernenergiepolitik--Kongress--Aachen <1995> (1)
- Kernkraftwerk--Kongress--Aachen <1995> (1)
- Mine haulage--Technological innovations--Congresses (1)
- Nuclear engineering--Research--Germany--Jülich--Congresses (1)
- Nuclear power plants--Environmental aspects--Congresses (1)
- Pebble bed reactors--Research--Congresses (1)
- Power (Mechanics)--Technological innovations--Congresses (1)
- Power resources--Congresses (1)
- Renewable energy sources--Europe (1)
- Renewable energy sources--Germany (West) (1)
- Superconductivity--Congresses (1)
- Superconductivity--Industrial applications--Congresses (1)
- (53)