Patent ID: 8267164

Claim:
An energy recovery and humidity control system comprising: an enclosure comprising: a plurality of ports capable of connecting to a plurality of ducts; an enthalpy exchange core defining a first part of a first path for a first air stream, and a second path for a second air stream; the first path and the second path exchanging heat and humidity between the first air stream and the second air stream; a heat exchange sub-core defining a second part of the first path for the first air stream, and a third path for a third air stream; the first path and the third path exchanging heat between the first air stream and the third air stream; the heat exchange sub-core comprising a first plurality of passages and a second plurality of passages; the first plurality of passages and the second plurality of passages defining a cross-flow of the first air stream and the third air stream, wherein the second path is in communication with a third port of the plurality of ports and a fourth port of the plurality of ports, and the third path is in communication with the third port and a fifth port of the plurality of ports, and wherein the second port supplies air to a first space, the third port receives air from a second space with lower temperature or humidity compared to the first space, the fifth port supplies heat exchanged air to the second space with lower temperature or humidity, and the fourth port exhausts air; fans for circulating the first air stream, the second air stream and the third air stream; and a controller for controlling the fans and regulating the flows of the first air stream, the second air stream and the third air stream.