Industrial heat pipe energy recovery package unit

Claim 1

A heat exchange recovery apparatus for an industrial process comprising a main air supply conduit a by-pass supply conduit a main exhaust conduit a by-pass exhaust conduit a plurality of independant heat exchange tubes forming a heat exchange zone suspended between and extending into said main supply and main exhaust conduits wherein, said plurality of heat exchange tubes are removeably secured in brackets disposed in said main supply and main exhaust conduits, and said heat exchange tubes have integral, continuous, tapered, fin elements formed thereon wherein, said brackets have a plurality of heat exchange tube receiving spaced recesses extending along at least one edge, and the brackets in their assembled relationship form circular apertures which secure the heat exchange tubes in place and accommodate the integral fin elements formed thereon a plurality of spray nozzles disposed in said exhaust conduit upstream of said heat exchange tubes, wherein said spray nozzels are periodically actuated to wash away contaminants which have accummulated on said heat exchange tube and fin surfaces a louver assembly and filter assembly mounted upstream of said damper assembly in said main supply conduit, and said damper assemblies can be actuated; to maintain a given temperature value in the main exhaust conduit; to vary the efficiency of the heat exchange recovery apparatus and to direct all of the supply air and exhaust through the by-pass conduits to allow repair replacement or rearrangement of the heat exhaust tubes without disrupting the industrial process.