Heat exchanger for utilising the heat from waste water

摘要

Heat exchanger element for installation in sewage pipelines, the top side of which heat exchanger element has a heat-conducting exchange surface with heat exchanger chambers arranged on it, the heat exchanger element has in cross section a run-in gutter and run-off surfaces contiguous to the latter on both sides, and, in the region of the run-in gutter and the run-off surfaces, lines for the forward run, return run and distribution of a heat exchanger medium are arranged, the floor point of the run-in gutter, the lower region of the lines and/or the free margins of the run-off surfaces being designed as bearings for arranging the heat exchanger element in the sewage pipeline.

主权项

1. A heat exchanger element for installation in a sewage pipeline, the sewage pipeline having a longitudinal axis and a concave inner circumferential surface extending along the longitudinal axis, the heat exchanger element comprising:
opposite upstream and downstream ends; parallel left and right side edges extending between the upstream and downstream ends; opposite upper and lower surfaces between the upstream and downstream ends and between the left and right side edges; heat exchanger chambers between the upper and lower surfaces; a run-in gutter extending from the upstream end to the downstream end and spaced inward from the left and right side edges, the upper surface of the run-in gutter being concave from the upstream end to the downstream end and the lower surface of the run-in gutter being convex from the upstream end to the downstream end; left and right run-off surfaces formed on the upper surface of the heat exchanger element between the left and right side edges and the run-in gutter; the heat exchanger element being configured relative to the sewage pipeline so that the left and right side edges are simultaneously engageable with spaced apart locations on the inner circumferential surface of the sewage pipeline while the lower surface of the run-in gutter defines a floor point engaging the inner circumferential surface of the sewage pipeline from the upstream end to the downstream end of the heat exchanger element; and areas of the lower surface between the floor point and the left and right side edges being spaced from the inner circumferential surface of the sewage pipeline for accommodating heat exchange lines.