| 摘要 |
<p>The arrangement concerns the flow of combustion gases from the combustion chamber (3) through a boiler (1) whereby the gases give up their heat to a heat transfer medium whilst passing through cooling zones (7, 8, 10) to a flue duct (11). The gases are split in at least two flows (7, 8) with differential heat transfer to the medium, after which they are at least partly combined again into a single flow whose temp. can be selected, and then led to a point of utilisation (16). The proportion which does not reach this point is led to the flue via the last cooling zone (10). The temp. of the mixed flows (7, 8) is controlled (12) by controlling their relative proportions.</p> |
