The most popular material can not only significant

2022-08-04
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For another material, the efficiency of solar power generation can not only be significantly improved, but also the cost can be reduced.

although the proportion of solar power in the total electricity use in the United States is not high (about 2%), if the cost of power generation and energy storage in cloudy days and nights can be reduced, the status of solar power generation can actually be higher. On October 17, Nature magazine reported that Purdue University (PU), Georgia Institute of Technology (GIT), University of Wisconsin Madison (UWM) and Oak Ridge National Laboratory (ORNL) have cooperated to develop a new material and manufacturing process, which will make solar power generation more efficient. Kenneth sandhage, Professor of PU materials engineering, said: "the cost of storing solar energy in the form of thermal energy is lower than that of battery energy storage. What should be considered more is how to reduce the cost of solar power generation."

the hydraulic universal experimental machine produced by StarTech adopts a full digital closed-loop control system. In the general impression, solar power generation is just a large battery panel for judging the fracture type of a farm or roof. However, for solar power generation, another more important option is centralized power plants using thermal energy. The power plant uses a lens to concentrate a large amount of light in a small area, and then transfers the heat in the small area to the molten salt, which is then transferred to the working fluid - supercritical carbon dioxide (SUD). The SUD expands to drive the turbine to generate electricity. To reduce the cost of solar power generation, turbines need to generate more electricity with the same amount of heat, which means raising the temperature. However, problems follow: at present, the heat exchangers used to transfer heat from molten salt to SUD are mostly made of stainless steel or nickel base alloy, which are easy to soften under high temperature and high pressure

inspired by the synthetic materials previously discovered by his team to deal with high temperature and high pressure environments such as solid fuel rocket nozzles, sandy Haji, in cooperation with asegun Henry, a researcher at the Massachusetts Institute of Technology (MIT), designed a composite material composed of ceramic zirconium carbide and metallic tungsten to improve the temperature and pressure resistance of heat exchangers. Git, UWM and ORNL researchers tested the heat exchange performance, corrosion resistance and mechanical properties of cermet materials respectively, and confirmed that the new materials can significantly improve the performance of heat exchangers

git and Pu researchers also calculated the cost of new materials. They believe that compared with stainless steel or nickel alloy heat exchangers, the large-scale production cost of heat exchangers made of new materials is lower. Sandihaji believes that the new technology is expected to make solar power a leading role in electricity and reduce the carbon dioxide produced in the process of electricity production

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