"I have a lifetime of fish, I never thought I could fish like this," said Wang Laohan, who used the top cloud aquaculture monitoring system. Wang Laohan is a traditional aquaculture farmer. He has always practiced farming in the breeding process. However, although there have been many years of breeding experience, fish floating heads and other phenomena are still difficult to avoid, and aquaculture losses often occur. In recent years, with the continuous expansion of the scale of farming, artificial experience has shown more deficiencies, this time the use of aquaculture monitoring systems for aquaculture management, to provide an important basis for Wang Laohan to carry out scientific breeding. Aquaculture is more at ease. At present, the agricultural field advocates scientific planting and scientific breeding. Therefore, adding scientific and technological elements to aquaculture to increase the level of science and technology in aquaculture is also an inevitable trend. At the same time, Topp Cloud's R&D and production of aquaculture monitoring systems is fully understood. After the pain points in the aquaculture process, the development of the software and hardware platform is combined with the advantages of its own hardware and software platforms. Therefore, after the development, the farmers can help solve various problems, and they are practical and stable. With this aquaculture monitoring system, Wang Laohan wants to check the water temperature and dissolved oxygen in the pond. Just point and click the mouse or take out the mobile phone. It is very convenient. Relying on the experience of breeding, there is a very large degree of uncertainty, the deviation is very obvious, and once there is a deviation, it will often cause serious losses. This point, Wang Laohan has a deep understanding, so he realized that breeding must also speak science, To ensure the quality and yield of culture, it is then necessary to apply a new type of scientific and technological system such as aquaculture monitoring system to strengthen the supervision of water quality safety, and it turns out that Wang Laohan’s decision is correct, with monitoring data of aquaculture monitoring system. As a basis, aerators will only be started when they are needed. During the hot summer months, the floating phenomenon of fish is significantly reduced. By the end of the year, energy saving, provincial food and prolific fish can fully offset this expenditure. Even with balances, Wang Laohan decided to continue to increase investment in aquaculture monitoring systems and expand the types and scale of aquaculture.
Fixed tube heat exchanger consists of tube bundle, tube plate, shell, head, folded plate, etc. Tube bundle ends fixed in the tube plate, the tube can be expanded (the inner hole of the tube with mechanical expansion, so that the tube wall from the inward to outward extrusion and fixed in the tube plate) or welded to the tube plate. The tube bundle is placed within the tube shell, with headers and flanges fixed at both ends. In this way, one fluid flows from the inside of the tube and the other from the outside. The space between the two heads and the tube plate is used to distribute or collect the fluids inside the tube. The two fluids do not mix with each other, but only exchange heat through the tube wall.
Advantages: simple and compact structure, high pressure resistance, low cost and easy to clean the tube side.
Disadvantages: Risk of blockage when the tube is damaged or needs to be replaced.
When the difference between the wall temperature of the tube bundle and the shell or the coefficient of linear expansion of the material is large, a large thermal stress will be generated in the shell and the tube bundle. A flexible compensation ring (also called expansion joint) should be installed on the shell to reduce the thermal stress.
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