The draught which is produced by steam jet nozzle issuing from a nozzle placed in ashpit under the fire grate of the furnace is called:
1
Forced steam jet draught
2
Induced steam jet draught
3
Chimney draught
4
Economizer draught
The draught which is produced by steam jet nozzle issuing from a nozzle placed in ashpit under the fire grate of the furnace is called: