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 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 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 modular mobile fract pump unit having for a radiator with a heat exchanger vertically for generally horizontal flow of air through the radiator and a duct provided on an air exit side of the heat exchanger to direct air exiting the heat exchanger upwardly. Preferably, the duct comprises a retractable duct for movement between an operative position for use in parked cooling operation and a storage position for transport of the unit as a road worthy vehicle, within the storage position the duct not increasing the overall width of the unit and in the operative position the duct extending laterally to the side of the unit beyond the storage position and increasing the overall width of the unit.

Abstract: A heat exchanger having a pair of extruded tanks in which the tanks have a configuration which facilitates manufacture and the securement of support rails to the tanks for securing the tanks together.

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 modular mobile fract pump unit having for a radiator with a heat exchanger vertically for generally horizontal flow of air through the radiator and a duct provided on an air exit side of the heat exchanger to direct air exiting the heat exchanger upwardly. Preferably, the duct comprises a retractable duct for movement between an operative position for use in parked cooling operation and a storage position for transport of the unit as a road worthy vehicle, within the storage position the duct not increasing the overall width of the unit and in the operative position the duct extending laterally to the side of the unit beyond the storage position and increasing the overall width of the unit.

Abstract: This invention relates to a heat exchanger having a core comprised of oblong shaped tubes having substantially flat longer sides and rounded shorter sides, the tubes being separated by and in contact with conventional wave-shaped external cooling fins. Locating plates are provided at both ends of the tubes to accurately align and to secure the tubes into position. The ends of the tubes are sealably secured to header plates by means of resilient grommets. The heat exchanger of the present invention provides better resistance to mechanical and thermal shocks than conventional heat exchangers having tubes soldered or brazed to the header plates and provides better cooling efficiency than heat exchangers having circular, grommetted tubes.