The present invention provides an electric heating device and its preparation method; the said electric heating device includes at least one PTC electric heating element and radiation fin; the said PTC electric heating element includes positive and negative electrodes and PTC element between positive and negative electrodes; the said radiation fin is located at outer surface of the said PTC electric heating element; surface of the said radiation fin_with no physical connection to the said PTC electric heating element, is uncharged. State-of-the-art flat aluminum tube or aluminum tube is not used for the electric heating device provided in the present invention, which not only saves costs, but also reduces heat resistance in intermediate link of flat aluminum tube, enhances heat exchange efficiency and increases volumetric power density.

A heater assembly or dryer appliance, as provided herein, may include a housing, a heating element, and a thermostat. The housing may have an outer surface and an inner surface. The inner surface may define a chamber, an inlet, and an outlet. The housing may further include an embossing mount extending radially outward along the outer surface. The heating element may be disposed within the chamber to selectively heat air in a flow of heated air from the inlet to the outlet. The thermostat may be mounted on the outer surface of the housing. The thermostat may include a probe, a first mounting tab, and a second mounting tab. The probe may be positioned in thermal communication with the chamber. The first mounting tab may be secured to the embossing mount. The second mounting tab may be held against the outer surface.

An electrical machine includes a fan guard having a first air flow channel. A stator assembly is coupled to the fan guard and includes a stator yoke having a cylindrical outer surface and a stator pole shoe. The stator pole shoe includes a plurality of stator poles coupled to the stator yoke. The stator assembly includes a second air flow channel defined between the stator yoke and an adjacent pair of the stator poles. A rotor assembly is positioned inside the stator assembly. The rotor assembly includes a rotatable shaft and a rotor. The rotatable shaft defines a rotation axis. A control electronics board includes a plurality of heat making components and is enclosed in a housing having a vented base and a closure. The housing is coupled to the stator assembly opposite the fan guard. The vented base includes a plurality of vent openings opened toward the fan guard.

A heater for use in heating a fluid flow through a passageway is provided that includes a continuous resistive heating element having a predefined shape that is directly exposed to the fluid flow. The predefined shape includes a cross-sectional geometry that provides a required heat distribution, structural strength, and reduced back pressure within the passageway. The predefined shape may include airfoils, while the cross-sectional geometry provides a required heat distribution, structural strength, and reduced back pressure within the passageway.

A termination assembly for a heater assembly includes a plurality of resistive heaters arranged in discrete power phases, each resistive heater comprising a resistive heating element surrounded by dielectric material and a sheath. The termination assembly includes a plurality of electrically nonconductive members. Each electrically nonconductive member includes a plurality of apertures configured to receive power pins of the plurality of resistive heaters. The termination assembly includes a plurality of connectors configured to connect the power pins to the electrically nonconductive members. Each electrically nonconductive member includes a number of the plurality of connectors corresponding to a number of power pins being terminated. The termination assembly includes an electrical circuit embedded in or disposed on at least one of the plurality of electrically nonconductive members.

An electric heater to heat a flow of a fluid having a jacket block comprising a plurality of longitudinal bores to allow the through-flow of a gas phase medium. An elongate heating element extends through each of the bores and is positionally stabilised within the jacket block via a plurality of stabilising fins that project radially inward to at least partially surround the elongate heating element within each of the bores.

A heater for use in heating a fluid flow through a passageway is provided that includes a continuous resistive heating element having a predefined shape that is directly exposed to the fluid flow. The predefined shape includes a cross-sectional geometry that provides a required heat distribution, structural strength, and reduced back pressure within the passageway. The predefined shape may include airfoils, while the cross-sectional geometry provides a required heat distribution, structural strength, and reduced back pressure within the passageway.

Disclosed herein is a method of sublimation printing, a heating system for sublimation printing and a printing device. The method of sublimation printing comprises generating an air flow through a print medium on which a printing substance is deposited and heating the air flow to a temperature at or above a sublimation temperature of the printing substance.

An electric heating device may include a heating volume, at least two heating modules arranged in the heating volume, an electrically conductive control housing, a power electronics, and an electrically conductive conductor arrangement. The control housing may delimit a control volume and may have a bottom that delimits the heating volume. The conductor arrangement may include an intermediate part electrically connected to the bottom and to an electrically conductive outer shell of each of the heating modules. The heating modules may each extend into the control volume through an associated passage opening of the bottom. The outer shell of each heating module may extend through an associated arrangement opening of the intermediate part. The conductor arrangement may include a cover covering the intermediate part. A closure bend of the intermediate part may extend through a cover opening of the cover and engage with the cover to form a form closure.

A process for regenerating a catalyst in an olefin production reactor. The process includes feeding a compressed, pre-heated air stream to a heating zone comprising an electrical heater, electrically heating the compressed, pre-heated air stream in the heating zone to a temperature in the range of 500-800° C., producing a regeneration air stream, feeding the regeneration air stream to the olefin production reactor, regenerating the catalyst using the regeneration air, producing a hot air stream, and feeding the hot air stream to a waste heat recovery unit configured to pre-heat a compressed air stream, producing the compressed, pre-heated air stream and a waste air stream.