Patent ID: 7810311

Claim:
A heat exchange system for use in operating equipment in which a working fluid is utilized in providing selected operations thereof, the heat exchange system providing air and working fluid heat exchanges to cool the working fluid at selectively variable rates in airstreams occurring with uses of the equipment, the system comprising: a cooling duct extending through at least a portion of a stream structure that is positioned providing access to the airstreams occurring during use with air accessed at an entrance opening at an upstream side of the cooling duct flowing therethrough, the cooling duct having an entrance opening on the upstream side and an exit opening on a downstream side; a moveable entrance flap disposed on the upstream side of the cooling duct such that the moveable entrance flap covers at least a portion of the entrance opening, when in a closed position to thereby restrict the air from entering the cooling duct and permits a selected flow of the air through the cooling duct when in an open position; a moveable exit flap disposed on the downstream side of the cooling duct such that the moveable exit flap covers at least a portion of the exit opening when in a closed position and permits flow of the air through the cooling duct when in an open position; and a heat exchanger core provided in the cooling duct between the entrance and exit openings thereof and having a plurality of passageway structures therein about which the air passes in flowing therethrough with the passageway structures being coupled to an input conduit at one end thereof and coupled to an output conduit at an opposite end thereof to enable the working fluid to be provided, and removed from, interiors of the passageway structures through interiors of the input and output conduits.