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For most of today's electronic products, solving the endurance is always a very important issue. For this reason, many R&D personnel can also say that they have racked their brains. In addition to thinking about all kinds of weird usage and modeling of charging devices, the new charging method is also very important. A few days ago, researchers at the Massachusetts Institute of Technology developed a new method of portable power generation through combustion. It is reported that this new discovery is based on a study by MIT in 2010. At that time, Professor Miles. Stella at MIT discovered that heating a carbon wire made of carbon nanotubes from one end and generating current at the other end. This is accomplished by coating a carbon nanotube wire with a combustible material such as sucrose and lighting one end of it.
In the experiment at that time, it was only able to produce relatively weak electricity. After several years of improvement, its efficiency has been improved by more than a thousand times. It is currently equivalent to a similarly sized battery and will continue to be improved in the future. Scientists pointed out that this technology may take several years to invest in high-tech commercial products. The team found that heat pulses can propel electrons into the carbon nanotubes. The team found that sometimes, the heat pulse can get a single voltage, but at other times, two different voltages can be obtained in different areas.
This technology can improve the endurance and usage of electronic products, or be used in new wearable devices after being reduced in size.
There are five general body styles of ball Valves: single body, three-piece body, split body, top entry, and welded. The difference is based on how the pieces of the valve-especially the casing that contains the ball itself-are manufactured and assembled. The valve operation is the same in each case.
In addition, there are different styles related to the bore of the ball mechanism itself.
Ball valves in sizes up to 2 inch generally come in single piece, two or three piece designs. One piece ball valves are almost always reduced bore, are relatively inexpensive and generally are throw-away. Two piece ball valves are generally slightly reduced (or standard) bore, they can be either throw-away or repairable. The 3 piece design allows for the center part of the valve containing the ball, stem & seats to be easily removed from the pipeline. This facilitates efficient cleaning of deposited sediments, replacement of seats and gland packings, polishing out of small scratches on the ball, all this without removing the pipes from the valve body. The design concept of a three piece valve is for it to be repairable.
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