Abstract: A heat exchanger for use in combination with motor driven fluid pumps of the type having a motor with an outwardly curved upper surface. The heat exchanger has an arcuate heat exchange jacket formed of an inner wall, an outer wall, and a spacer frame sealed therebetween which has an open center section defining a hollow enclosed cavity. The jacket is configured to engage the exterior surface of the pump motor for maintaining heat exchange contact between the pump motor and the cavity. The jacket has a fluid inlet and one or more outlets. A venturi cross having a pair of tubular extensions may be connected to the intake port of the pump with one extension connected to the jacket inlet and the other extension to the jacket outlet to subject the jacket to negative pressure created by the venturi cross to draw a portion of the fluid through the jacket cavity and recirculate it through the pump.

Abstract: A heat exchange assembly for use in combination with motor driven fluid pumps and the like, such as a motor, is provided. The assembly comprises a suction manifold, a discharge/diverter manifold, and a heat exchange jacket. The heat exchange jacket is maintained in close contact with the exterior surface of the motor, so that waste heat is transferred to the jacket thereby heating the fluid therein.