3results about How to "Increase the outer surface area" patented technology

This invention belongs to the field of solar water evaporation technology, and discloses a high-efficiency solar water evaporator, its preparation method, and its application. The preparation method includes the following steps: (1) Clean and dry coconut fibers, take multiple coconut fibers and weave them into a rope, and then cut them into coconut fiber ropes of the same length; (2) Embed the above-mentioned coconut fiber ropes of the same length into a sponge in an m×n array, wherein the lower end of the coconut fiber rope is flush with the bottom surface of the sponge, while its upper end protrudes from the top surface of the sponge by a certain height; (3) Immerse the part of the above-mentioned coconut fiber rope array protruding from the top surface of the sponge in a sodium alginate solution containing carbon black for surface coating treatment, and then take it out and air dry naturally to obtain a high-efficiency solar water evaporator based on a coconut fiber array. This invention has the characteristics of wide material sources, low cost, simple evaporator construction method, and high water evaporation rate, and has better prospects for large-scale preparation and commercial application.

The utility model discloses a kind of air-conditioning gas compressors of high efficiency heat dissipation, it is related to gas compressor technical field, and it includes: air compressor;Face expanding mechanism, it is equipped with two groups, two groups face expanding mechanism are all located on air compressor, to increase the contact area of air compressor and outside, each group face expanding mechanism includes laminating plate and multiple face expanding teeth, laminating plate is wrapped and set on the outer surface of air compressor, multiple face expanding teeth are equidistant fixedly connected on laminating plate;Butt joint mechanism, it is equipped with two groups.The air-conditioning gas compressor of high efficiency heat dissipation, by the use of face expanding mechanism, can increase the outer surface area of air compressor, improve the effect of heat transfer, improve the cooling effect in the use process of air compressor, ensure use, the air-conditioning gas compressor of high efficiency heat dissipation, by the use of liquid cooling mechanism, can be circulated, reduce the temperature of face expanding tooth, ensure the temperature in the use process of air compressor, and simple structure, easy to use.

This invention provides a carbon-modified alumina support, a catalyst, its preparation method, and a method for deep removal of trace amounts of CO. The specific surface area of ​​the alumina support is ≥300 m². 2 / g, pore volume 1.0~3.5m 3 / g. The preparation method includes: first, preparing a sodium aluminate solution from sodium hydroxide and sodium aluminate, adding it to an aluminum sulfate solution to obtain a boehmite precursor, crystallizing it to obtain boehmite, then adding it to a nitrogen-containing polymer solution, impregnating it, and reacting it. The resulting reaction product is calcined under a protective atmosphere to obtain the carbon-modified alumina support; contacting it with an impregnation solution containing active components, removing the impregnated carbon-modified alumina support, and then subjecting it to a second calcination under a protective atmosphere to obtain the catalyst; and then reacting the CO-containing material with the obtained catalyst to remove CO. The catalyst prepared by this invention has a large specific surface area of ​​support, resulting in a large catalyst loading and high dispersion of active metals.