Finned tube heat exchanger is one of the earliest and most successful discoveries in the process of improving tube heat exchanger. Up to now, this method is still the most widely used one among all kinds of heat transfer enhancement methods for tubular heat exchange surfaces. It is not only suitable for single-phase liquid flow, but also has great value for phase change heat transfer. However, before the 1960s, ordinary finned tube heat exchangers mostly used flat fins without any treatment on the surface structure. This type of fin has no other function of enhancing heat transfer except increasing the heat transfer area to achieve the effect of enhancing heat transfer. With the development of air cooling technology and the increasing trend of using gas medium in heat exchanger, finned tube heat exchanger has been paid more and more attention. Especially since the Sergles report on enhanced heat transfer was published at the Sixth International Conference on Heat Transfer, a large number of highly efficient fin surface structures have been developed continuously. At present, most of the finned tube heat exchangers used for live and clean gas use a new and efficient fin surface structure, which has achieved significant enhanced transfer effect.
Industrial heat exchanger,Environmental protection industrial heat exchanger,Environmental heat exchanger Wuxi Mcway Equipment Technology Co., LTD , https://www.mcwayfinnedtube.com
According to reports, the newly developed mine high-speed monkey car is a mechanical equipment for coal mine underground transportation. The staff can quickly reach the working face by taking the monkey car down the well, saving time, reducing physical expenditure and improving labor efficiency. Compared with the ordinary monkey car, the high-speed monkey car has a high speed and can achieve 0-3 meters stepless speed regulation. The personnel can stand still and up, using computer program control, can collect the flow direction and flow of the downhole personnel; It is safe and reliable. It has set up the upper and lower stations and intermediate stations of the personnel. It is fully equipped with various protections and is a modern coal mine safety and efficient equipment.
It is reported that the first batch of high-speed monkey cars have been put into use in Shandong Yanzhou Mining Group. According to the domestic coal industry experts, the performance of domestic high-speed monkey cars exceeds imported equipment and is very advanced.
Since the 1980s, Shijiazhuang Coal Mine Machinery Co., Ltd. has successfully developed China's first KCU-6/900 railcar, the first FND-90 monorail crane, and the first KZP-80/900 (600). The diesel engine drives the common rack rail car, the first GCP-8/600 (900) diesel engine common mechanical rack car, and the first CXQ55/600 (900) storage rubber sleeve wheel rack locomotive. In 1996, the company and the German Baker Group realized the combination of technology and human resources, and jointly developed coal mine underground auxiliary transportation equipment.
Recently, China’s first domestic high-speed monkey car, which was jointly developed by Shijiazhuang Coal Mining Machinery Co., Ltd. and German Baker Group, and Sino-German joint venture Shijiazhuang Baker Mining Transportation Equipment Co., Ltd., was launched in Shijiazhuang. This technology has filled the underground coal mine in China. A blank for transportation machinery.