WASTE HEAT RECOVERY UNIT Russian patent published in 2015 - IPC F24F7/00 

FIELD: heating.

SUBSTANCE: waste heat recovery unit includes a heat transfer surface in the form of heat transfer plates, alternating slot-type ducts for hot and cold heat carriers, horizontal bottom and cover plate with gaskets from elastic material, inlet and outlet branch pipes with fairings located in them and closing the corresponding ducts, a frame consisting of horizontal and vertical braces and hold-down planks, spacing pieces in the ducts, holes made at the bottom, the cavities of which are connected to a drainage header. Inlet and outlet branch pipes for hot and cold heat carriers are located in pairs on sides of vertical edges of the heat-conducting plates; vertical edges have angular cuts, and the heat-conducting plates have sections bent in semi-circles, which are alternated with straight sections and together forming coil bands, or sections of the heat-conducting plates bent as to semi-circles and quarter parts of the circles are connected in series so that spirals are formed.

EFFECT: increasing heat transfer intensity, reducing overall dimensions and material consumption; providing continuous work of waste heat recovery unit during winter period and improving its thermal effectiveness.

2 cl, 8 dwg