Classification
EUL - Heat pumps
70
EUA - Energy conservation - general
4
EUR - District heating
4
EUU - Cogeneration
2
THN - Heat exchanger
2
THS - Turbines, pumps
2
CWE - Chemical engineering, chemical industry - general
1
EBA - Energy production, energy technology
1
EUD - Energy consumption
1
TAT - Engineering Standards
1
TKB - Civil engineering - buildings
1
TKF - Power plants
1