A power electronics assembly includes one or more power electronics devices, and a heat exchanger to which the one or more power electronics devices are mounted. The heat exchanger includes an inlet manifold and an outlet manifold, and one or more fluid pathways extending connecting the inlet manifold and the outlet manifold, the heat exchanger configured to transfer thermal energy from the one or more power electronics devices into a flow of fluid passing through the one or more fluid pathways. Thee one or more fluid pathways include one or more internal enhancements and channel configurations to enhance thermal energy transfer by promoting boiling of the flow of fluid and to reduce the pressure drop in the pathways under a two-phase flow condition. The flow of fluid is a flow of liquid refrigerant diverted from a condenser of a heating, ventilation, and air conditioning (HVAC) system.

Provided is a heat-exchanging and mixing device and a solution transport and cooling unit which are capable of efficiently performing heat transfer with respect to a heat-exchange target, while stirring and mixing the heat-exchange target, to obtain an advantageous effect of being able to significantly hinder accumulation of a solid content in the solution transport and cooling unit. The heat-exchanging and mixing device comprises a heat exchanger tube and a spiral mixing member having a width approximately equal to an inner diameter of the heat exchanger tube and disposed inside the heat exchanger tube. The spiral mixing member is comprised of a strip-shaped member having an inter-slit region.

A gas separation unit for the separation of carbon dioxide from air is proposed for use in a cyclic adsorption/desorption process and using a loose particulate sorbent material. Sorbent material is arranged in at least two stacked layers, and each layer comprises two sheets of a flexible fabric material which is gas permeable but impermeable to the loose sorbent material. The sheets are arranged parallel defining an inlet face and an outlet face, are arranged with a distance in the range of 0.5-2.5 cm, and are enclosing a cavity in which the sorbent material is located. Said layers are arranged in the unit such that the inflow passes through the inlet face, subsequently through the particular sorbent material located in the cavity of the respective layer, subsequently to exit the layer through the outlet face to form the gas outflow.

The present invention discloses a method for preparing an evaporator for reducing water condensing capacity and an evaporator. The preparation method comprises steps of: step A: selecting fins; step B: stacking; step C: arranging tubes; and, step D: expanding tubes. In accordance with the present invention, the existing fins and devices can be used to produce an evaporator in which the distance between two adjacent fins satisfies the requirements of the freezing operation, ensuring the normal operation of an air conditioner when the refrigeration temperature is below 0° C.

A gas separation unit for the separation of a first gas, carbon dioxide, from a mixture, by using an adsorption/desorption process using a loose particulate sorbent material arranged in at least two stacked layers. The primary heat exchange piping is arranged on the two outer edges of the layer within the cavity extending along a longitudinal direction. Further, an essentially parallel array of secondary heat exchange pipes is provided, the secondary heat exchange pipes extending along a transverse direction. The first diameter of the secondary heat exchange pipes is at least twice as large as the second outer diameter of the secondary heat exchange pipes and the secondary heat exchange pipes are in thermal contact with sheets of metal which extend oscillating between pairwise adjacent secondary heat exchange pipes.

The present invention discloses a method for preparing an evaporator for reducing water condensing capacity and an evaporator. The preparation method comprises steps of: step A: selecting fins; step B: stacking; step C: arranging tubes; and, step D: expanding tubes. In accordance with the present invention, the existing fins and devices can be used to produce an evaporator in which the distance between two adjacent fins satisfies the requirements of the freezing operation, ensuring the normal operation of an air conditioner when the refrigeration temperature is below 0° C.

A method of forming a component for a heat exchanger is disclosed. The method comprises machining a portion of a metal sheet to form a plurality of protrusions, and forming apertures in the portion of the metal sheet so as to form a plurality of ribs defined by adjacent ones of the apertures, wherein at least one protrusion is located on each of said ribs.

A gas separation unit for the separation of a first gas, carbon dioxide, from a mixture, by using an adsorption/desorption process using a loose particulate sorbent material arranged in at least two stacked layers. The primary heat exchange piping is arranged on the two outer edges of the layer within the cavity extending along a longitudinal direction. Further, an essentially parallel array of secondary heat exchange pipes is provided, the secondary heat exchange pipes extending along a transverse direction. The first diameter of the secondary heat exchange pipes is at least twice as large as the second outer diameter of the secondary heat exchange pipes and the secondary heat exchange pipes are in thermal contact with sheets of metal which extend oscillating between pairwise adjacent secondary heat exchange pipes.

An electric heating device, in particular for a motor vehicle, includes a housing which has an inlet and outlet opening for a medium to be heated and which encloses a layered structure. The layered stricture comprises at least one PTC element which is electrically conductively connected to conducting elements leading to connections of different polarity, and heat-emitting elements that are conductively connected on both sides to the PTC element. In order to provide improved heat dissipation, the heat-emitting elements include a panel element that is provided with perforations and that is made of a heat-conducting material.

Embodiments provide a helical layer structure including: a helical core member which is formed of a flexible, lengthy, flat plate-like core member and which is formed of a steel plate made of a metal material, such as iron; and a polymeric coating layer which is formed of a polymeric material such as a thermosetting elastic material or a thermoplastic elastic material, and which coats the helical core member. The manufacturing method of the helical layer structure includes: a feeding step of feeding a core member having flexibility; a supply step of supplying the polymeric material having fluidity; a coating step of coating the core member with the polymeric material; a cooling step of cooling a coated intermediate which is coated with the polymeric material; and a helix formation step of helically twisting the coated intermediate to form the helical layer structure.