Jia Jinsheng, chairman of the International Dam Commission and vice president of the China Institute of Water Resources and Hydropower Research, spoke at the “China Hydropower Century Conference,†and stated that at present, China’s hydropower is in the forefront of the world in many aspects, from hydroelectric power generation to hydropower installation. From a high point of view, there are many dams in our country that have entered the world's top ten, but in terms of storage capacity, we are still far behind the most advanced countries in the world. The Three Gorges only ranks 22nd in the world. Many countries have a single reservoir with a storage capacity of more than 100 billion.
Jia Jinsheng stated that the development of the international community has put forward new requirements for dams for reservoirs, such as the demand for energy and electricity, and adequate storage capacity to adapt to the requirements of climate change. In response to dam safety, all countries in the world have stepped up their efforts. The mudslides in Zhouqu reflect the increasing safety requirements for project quality.
Therefore, Jia Jinsheng believes that it is necessary to continue implementing the strategy of giving priority to hydropower, continue to strengthen the protection of the ecological environment, and improve the existing system in China. Whether it is China or the world, there is a need for change in the understanding of hydropower development. It is necessary to emphasize that transformation should be applied to nature while also emphasizing the protection of nature. Operational management must pay attention to ecological compensation and ecological dispatch.
Tube sheet are usually made of a round flat plate with holes drilled into the plate to accommodate tubes in the exact location and pattern relative to each other. The tube sheet is used to support and isolate the tubes in the Shell And Tube Heat Exchanger.
A tube sheet is a plate used to support a tube in a shell and tube heat exchanger. The tubes are aligned in a parallel manner and are supported and held in place by the tube plate. A tube sheet is a round plate with holes in it so that the tube can fit through the opening. Tubes are usually made of round, flat metal sheets. Drill holes for pipe ends in precise locations and patterns relative to each other. The tube plate is made of the same range of materials as the pipe.
These are usually made of mild steel and vary in thickness according to fluid pressure. Depending on the final application (petrochemical, nuclear, oil and gas, etc.), the tubes can be clad in stainless steel or other superalloys, or even made entirely of stainless steel or superalloys.
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