Abstract: An improved energy efficient electric, heater for air and other gaseous fluid comprise of a) ceramic monolithic heater body 3 provided with plurality of passages 4, inclined from proximal to distal end, making an angle with reference to the longitudinal central axis of the said heater body, and b) one or more electrical resistance heating elements 6, with their terminal ends 10 connected to a common power source. One additional passage 7 can be provided along its longitudinal central axis for insertion of a second fluid transfer pipe 8 for a secondary fluid that is to be mixed, heated and or dried. The heater body 3 is enclosed in metal casing 1, with an insulation layer 9 in between and fastened to an air pipe 15 from an air source 13 at the inlet side and an extension pipe 16 at the outlet end and can be effectively utilized in spray drying, surface heating, shrink wrapping etc.

Abstract: An improved energy efficient electric, heater for air and other gaseous fluid comprise of a) ceramic monolithic heater body 3 provided with plurality of passages 4, inclined from proximal to distal end, making an angle with reference to the longitudinal central axis of the said heater body, and b) one or more electrical resistance heating elements 6, with their terminal ends 10 connected to a common power source. One additional passage 7 can be provided along its longitudinal central axis for insertion of a second fluid transfer pipe 8 for a secondary fluid that is to be mixed, heated and or dried. The heater body 3 is enclosed in metal casing 1, with an insulation layer 9 in between and fastened to an air pipe 15 from an air source 13 at the inlet side and an extension pipe 16 at the outlet end and can be effectively utilized in spray drying, surface heating, shrink wrapping etc.