(57) The present invention relates to a heat recovery battery (1) with a plurality of
circuits (10), placed above each other, through which a heat transferring liquid circulates.
The circuits comprise horizontal exchanger tubes (12), provided with ribs (15), which
exchanger tubes within a circuit in the form of a vertical row or several adjacent
vertical rows are connected to each other via row bends (13), located at the ends
of the circuits, to row circuits (12), which in their turn in a horizontal direction
are connected to an entire circuit via circuits bends (14) at the highest and the
lowest points of the row circuits, the inlets and the outlets of the circuits respectively
through connecting tubes (9 and 11 respectively) being connected to collecting tubes
(3 and 5 respectively) on the inlet and the outlet side respectively, which connecting
tubes are provided with discharge and aeration means respectively (18 and 19). According
to the invention each formation of said circuit bends (14) to row circuits (12), located
vertically above each other and consequently also the last-mentioned row circuits
per se being connected to each other via a through connecting tube (16) with aeration
and discharge means respectively (17).
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