_:vb52781 . _:vb52782 . _:vb52783 . _:vb52778 . _:vb52779 . _:vb52778 . _:vb52784 . _:vb52784 . _:vb52779 . _:vb52785 . _:vb52785 . _:vb52784 . . _:vb52782 . _:vb52778 . _:vb52785 . _:vb52783 . . _:vb52779 . _:vb52783 . _:vb52780 . _:vb52784 . _:vb52780 . _:vb52784 . _:vb52782 . _:vb52781 . "Air to air heat recovery"@en . _:vb52785 . _:vb52778 . _:vb52781 . _:vb52781 . _:vb52782 . _:vb52779 . _:vb52780 . _:vb52783 . _:vb52785 . _:vb52779 . "An air-to-air heat recovery device employs a counter-flow heat exchanger between inbound and outbound air flow. It is typically used to transfer heat from warmer air in one chamber to cooler air in the second chamber (i.e., typically used to recover heat from the conditioned air being exhausted and the outside air being supplied to a building), resulting in energy savings from reduced heating (or cooling) requirements."@en . _:vb52780 . _:vb52778 . _:vb52781 . _:vb52782 . . . _:vb52783 . _:vb52780 . "https://w3id.org/ifc/IFC4_ADD1#IfcAirToAirHeatRecovery" . .