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.

A hot and cool fan is revealed. An air distribution unit and a feed unit are mounted in a fan body. The feed unit consists of a driving part and a driven part connected to each other. An electric heating unit is connected to the driven part for being moved to be aligned with or away from an air exhaust part of the air distribution unit. Air from the air exhaust part is heated by the electric heating unit when the electric heating unit is aligned with the air exhaust part. Air is blown out of the air exhaust part smoothly when the electric heating unit is away from the air exhaust part of the air distribution unit. Thereby the fan is switched between a warm mode and a cold mode easily and there is a sufficient amount of wind available.

An apparatus, system and method for dispensing underfill to components on a printed circuit board. The apparatus, system and method may include an underfill chamber having an input through which the printed circuit board is received; at least one dispensing robot capable of dispensing the underfill to the components; a lower heater suitable to substantially evenly heat at least half of or the entirety of an underside of the printed circuit board once the printed circuit board is within the underfill chamber; and an overhead heater capable of heating up to half of a topside of the printed circuit board once the printed circuit board is within the underfill chamber.

A hydrogen heating device for a blast furnace includes: a sealed container configured to allow a hydrogen-based gas to be led in; a heat generating element provided inside the sealed container and configured to generate heat by occluding and discharging hydrogen; and a temperature adjustment unit configured to adjust a temperature of the heat generating element. The heat generating element includes one or more stacked bodies each including a support made of at least one of a porous body, a hydrogen permeable film, and a proton conductor, and a multilayer film supported by the support. The multilayer film has a first layer made of a hydrogen storage metal or a hydrogen storage alloy and a thickness less than 1000 nm, and a second layer made of a hydrogen storage metal or a hydrogen storage alloy different from the first layer, or ceramics and having a thickness less than 1000 nm.

An air conditioning apparatus comprises an inlet module, an airflow guiding module, a hygroscopic wheel a dehumidification heating module and an internal recirculation heating module. The airflow guiding module includes an air channel switching unit, an outflowing air channel in air communication with an external environment outside of an air-conditioning environment, and an inflowing air channel in air communication with the air-conditioning environment. The air conditioning apparatus of the present invention meets various requirements for air conditioning. In addition, when the air conditioning apparatus performs a dehumidification process, the hygroscopic wheel and the dehumidification heating module is applied to remove the moisture of the air conditioning flow of the inflowing air channel, and thus the relative humidity of the air-conditioning environment is directly reduced so as to increase the dehumidifying efficiency.

A heating apparatus for generating a hot air flow comprises a single fan, a burner heating element and a resistance heating element. In this respect, an air passage that conducts air to be heated and a combustion air passage that leads to a burner adjoin the fan downstream, wherein a combustion air flow in the combustion air passage can be controlled by a control element associated with the combustion air passage.

An integratable movement device for ventilating equipment includes an electric machine such as a motor and a fan wheel connected with the electric machine. The movement device further includes a housing, wherein the electric machine and the fan wheel are installed in an inner lower portion of the housing. An upper portion of the housing integrally forms one or more venting outlets. A plurality of venting outlet units is provided at the venting outlets respectively. A chamber provided between the venting outlets and the fan wheel in the housing defines a venting channel. The housing having the venting outlets and the venting channel, along with the venting outlet units, the electric machine and the fan wheel configure the integratable movement device that is able to be directly assembled into the ventilating equipment.

The invention provides a heating device for thermal treatment of a hive structure adapted for pollinating insects comprising at least one a heating element, and a heat dispersion element comprised of a heat-conducting material at least partly surrounding the heating element or parts thereof, wherein the surface area of the heating dispersion element is larger than the surface of the area of the heating element.

An electric resistance radiant furnace that includes multiple panel emitters and at least one layer of metallic mesh, wire screen, or honeycomb assembly located between the panel emitters. In some embodiments, the panel emitters each include a ceramic body with an electric resistance wire embedded therein. Furnaces can be for heating an occupied space within a building and can also include a blower and controls and heat produced by electricity passing through the wire can be conducted through the ceramic body of each panel emitter and at least part of the heat can be radiated from the ceramic body to the metallic mesh, wire screen, or honeycomb assembly and then be transferred to air blown by the blower between the panel emitters and along the metallic mesh, wire screen, or honeycomb assembly. Concave or convex surfaces of curved layers of metallic mesh, wire screen, or honeycomb assembly can face opposite directions, can face the panel emitters, or both.

A lantern comprises a light source configured to emit visible light, as well as a heater configured to emit heat separate from the visible light of the light source. The lantern may have a housing defining a lighting section and a heating section, with the lighting section being arranged above the heating section. The light source may be positioned in the lighting section, or the light source may be positioned outside of the lighting section and adapted to project visible light at least partially into the lighting section, such as from a base below the lighting section or from a top above the lighting section. The heating section may contain the heater, which may be a convection heater adapted to blow heated air out of the housing in a desired direction. The housing may include a suspension structure for supporting the lantern.