Abstract: A mobile pump unit including a mobile trailer having mounted thereon one or more pumps, an internal combustion engine(s) to power the one or more pumps, and a heat exchanger assembly for cooling a fluid for the engine, transmission, hydraulic driven components, or pressure pump. The heat exchanger assembly includes a heat exchanger with an air inlet. The air inlet faces the engine and is for receiving air. In addition to the air inlet, the heat exchanger has a fluid inlet for receiving the fluid; a heat exchange surface for transferring heat from the fluid to the air; an air outlet for discharging the air; and a fluid outlet for delivering the fluid to the engine. The heat exchanger assembly also includes an air circulation device for moving the air through the heat exchanger, and an air intake duct that directs the air into the air inlet of the heat exchanger. The air intake duct is configured to resist heated air produced by the engine from entering the air inlet.

Abstract: A V-shaped heat exchanger apparatus providing a support pedestal on which on at least one side thereof a frame assembly is removably coupled to the pedestal structure. The frame assembly includes preferably as a unitary element, a frame and at least one heat exchanger fixedly secured thereto.

Abstract: A V-shaped heat exchanger apparatus providing a support pedestal on which on at least one side thereof a frame assembly is removably coupled to the pedestal structure. The frame assembly includes preferably as a unitary element, a frame and at least one heat exchanger fixedly secured thereto.