2results about How to "Effective heat transfer" patented technology

The application provides a liquid nitrogen wetting contact angle measuring device for a super-low-temperature solid surface, comprising a super-low-temperature solid surface cooling assembly, a nitrogen atmosphere protection assembly, a liquid nitrogen titration assembly and a wetting contact angle observation assembly, wherein the super-low-temperature solid surface cooling assembly can make the sample quickly enter and maintain the super-low-temperature state during the test through liquid nitrogen circulation and a silver cooling plate. The nitrogen atmosphere protection assembly discards the commonly used vacuum scheme in engineering and adopts dry nitrogen protection to avoid the rapid gasification of liquid nitrogen under vacuum. The liquid nitrogen titration device realizes the dropping of liquid nitrogen at different heights, supports the related research on wetting contact angle measurement and droplet impact dynamics. The wetting contact angle observation assembly guarantees the observation of the droplet shape under the super-low-temperature environment through a light source plate, a blowing device and the like. The application fills the gap in the research on the wetting and spreading behavior of super-low-temperature fluid on a cooled solid surface and has important value for super-low-temperature fluid lubrication and super-low-temperature fluid transportation.

The utility model discloses a separation circulating device and gasification kettle, separation circulating device includes heating case, heat exchange structure, circulating pump and air sending structure, heating case is used for containing and heating heat exchange fluid, heat exchange structure is equipped with installation site and heat exchange position, and has the heat exchange flow channel that passes through installation site and heat exchange position, and both ends of heat exchange flow channel all communicate heating case, circulating pump communicates heat exchange flow channel, is used for driving heat exchange fluid and circulates flow between heat exchange flow channel and heating case, air sending structure is installed in heat exchange structure, and is located installation site, and has air sending flow channel and air sending mouth, and air sending mouth communicates air sending flow channel, is used for output air. The scheme can heat air and liquid light hydrocarbon simultaneously through heat exchange structure, realizes air preheating, avoids cold air to directly contact liquid light hydrocarbon and absorbs light hydrocarbon heat, and guarantees liquid light hydrocarbon and heat exchange structure effective heat exchange, and then improves light hydrocarbon gas production efficiency, and the device is relatively compact, saves the occupied space.