Patent ID: 8249437
Filing Date: 2012-08-21
Classification: F24H,Y10T

Abstract:
1. A hybrid heater for heating fluids, the heater comprising: a structural mass comprising a plurality of elongated passages and cross passages, said cross passages coupling said elongated passages to provide an elongated heating flow path, the elongated passages being substantially parallel to one another, the cross passages being substantially parallel to one another, and the cross passages being substantially perpendicular to the elongated passages, said structural mass further comprising an inlet and an outlet fluidly coupled to the heating flow path, and a plurality of elongated heater rods, said rods being disposed within said elongated passages such that fluid introduced into the structural mass through the inlet flows through the elongated heating flow path and out of the structural mass through the outlet, the fluid flowing between the heater rods and the passages whereby said fluid is heated and wherein a volume defined by the elongated heating flow path is at most 30% of a volume enclosed by a surface bounding the structural mass externally.