AN ARRANGEMENT FOR SUPPLYING PRE-HEATED COMBUSTION AIR TO A COMBUSTION CHAMBER

摘要

The present invention relates to an arrangement for pre-heating combustion air supplied to a combustion chamber. In accordance with the invention, there is provided around the wall of the combustion chamber (3) a shell structure (22) which extends from the bottom of the combustion chamber along the whole or part of the vertical extension thereof and which is spaced from the combustion chamber wall so as to form a peripheral gap between the inner surface of the shell structure and the outer surface of the ocmbustion chamber wall, one end of the peripheral gap communicating with the ambient atmosphere and the opposite end of the gap being connected to a connection which discharges into the interior of the combustion chamber.