IPC Subgroup
F22B 31/08 Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
Introduced: September 1968
Last revised: January 2006
Full Title
Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus > Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- STEAM GENERATION
- Subclass:
- METHODS OF STEAM GENERATION; STEAM BOILERS