An exothermal vaporizer is provided. The exothermal vaporizer has a body including an air and vapor mix port, a fluid inlet port in communication with a reservoir, an air inlet, and a wicking material. A mouthpiece is coupled to the body and a temperature indicating cap is removable from the body. A counter flow design exothermal vaporizer, a modular exothermal vaporizer, and a vaporizer which is adjustable to modulate and/or regulate the flow ratio of dilution air and produced vapor are also disclosed.

A heat transfer tube includes a twisted baffle arranged in an inner wall of the tube. The twisted baffle extends spirally along an axial direction of the heat transfer tube. The twisted baffle is provided with a non-through gap extending along an axial direction of the heat transfer tube from an end to the other end of the twisted baffle. A cracking furnace uses the heat transfer tube. The heat transfer tube and cracking furnace have good heat transfer effects and small pressure loss.

A heat exchanger includes a body defining a flow channel, and a pin extending across the flow channel, the pin including an at least partially non-cylindrical shape. The pin can be a double helix pin including two spiral branches defining a double helix shape. The two branches can include a uniform winding radius. The two branches include a non-uniform winding radius.

The non-uniform winding radius can include a base radius and a midpoint radius, wherein the midpoint radius is smaller than the base radius. The two branches can be joined together by one or more cross-members.

A heat exchanger includes a shell, a coiled tube, and a swirler. The shell has an inlet and an outlet and forms a cavity. A first of a liquid refrigerant and a vapor refrigerant enters the inlet of the shell. The coiled tube is positioned within the cavity and is connected to an inlet tube from outside the shell and an outlet tube to outside the shell. A second of the liquid refrigerant and the vapor refrigerant enters the inlet tube of the coiled tube. The swirler is arranged adjacent the inlet of the shell and is dimensioned to distribute the first of the liquid refrigerant and the vapor refrigerant across the coiled tube.

The present disclosure provides a multi-purpose heat sink, a method of manufacturing the same, a board card, and a multi-purpose heat sink platform, where the multi-purpose heat sink is composed of a bracket (310) and heat dissipation components. The cost of the multi-purpose heat sink in the present disclosure is low.

An aluminum alloy fin material for a heat exchanger is made of an aluminum alloy including 0.05 mass % to 0.5 mass % of Si, 0.05 mass % to 0.7 mass % of Fe, 10 mass % to 2.0 mass % of Mn, 0.5 mass % to 1.5 mass % of Cu, and 3.0 mass % to 7.0 mass % of Zn, with the balance being Al and unavoidable impurities. In an L-ST plane thereof, second-phase grains having an equivalent circle diameter equal to or more than 0.030 μm and less than 0.50 μm have a perimeter density of 0.30 μm/μm.sup.2 or more, second-phase grains having an equivalent circle diameter equal to or more than 0.50 μm have a perimeter density of 0.030 μm/μm.sup.2 or more, and specific resistance thereof at 20° C. is 0.030 μΩm or more.

A thermal management system includes a plurality of thermal management assemblies. Each of the thermal management assemblies has a monolithic foil structure having a body with an external surface and a differently shaped and opposing internal surface. The external surface forms an outer profile and the internal surface forming an internal conduit with the outer profile and the internal conduit having different shapes. The monolithic foil structure is configured to physically isolate a first fluid flowing along the external surface from a second fluid flowing in the internal conduit. The body is configured to transfer thermal energy between the first fluid flowing along the external surface and the second fluid flowing in the internal conduit.

A method includes providing a first metal sheet and a second metal sheet, printing a channel pattern on the first metal sheet, bonding the first metal sheet and the second metal sheet to each other, forming a plurality of channels by introducing a fluid between the first metal sheet and the second metal sheet, introducing working fluid in the plurality of channels, sealing the first metal sheet and the second metal sheet, and forming a plurality of through holes in locations where the first metal sheet and the second metal sheet are bonded to each other. The plurality of through holes are arranged in a plurality of rows, each row including at least two through holes, and each location where the first metal sheet and the second metal sheet are bonded to each other includes a single through hole of the plurality of through holes.

A heat exchanger and an air conditioning device are provided. The heat exchanger includes a plurality of fins and a plurality of flat pipes arranged in parallel. Each of the plurality of flat pipes includes a first finned region, a second finned region, and a finless region. An end of the finless region connected to the first finned region is twisted and defined as a first torsion section, the other end of the finless region connected to the second finned region is twisted and defined as a second torsion section, and a portion of the finless region between the first torsion section and the second torsion section is defined as a connecting section.

A steam condenser for a cooking oven having a housing, side walls and at least partly open front side and back side to facilitate flow of cooling air through the steam condenser, and a heat exchanger located in said housing that includes connected finned tubes through which water vapor with other gases from the cooking oven are guided. The steam condenser includes a condensate drainage system that the finned tubes are arranged between the side walls of the housing and in a descending manner, such that each tube has one end attached to the side wall of the housing higher than the other end, and each two adjacent ends of adjacent tubes are located one higher than the other. The adjacent ends of the adjacent finned tubes are connected by 180° connectors, such that the finned tubes are interconnected in a zigzag manner. The highest or the lowest of the finned tubes is connected to a final descending tube which has orifices in an upper part and located on the side of the final descending tube that is facing away from the flow of the cooling air.