 |
The purpose of the 1997 Kyoto Protocol was to solve the problem of climate change. The Kyoto Protocol will expire in 2012. Looking around the world, petrochemical fuels are still in heavy use, carbon dioxide emissions are increasing year by year, and global greenhouse effect problems are getting worse. In Fukushima, Japan, a global radiation safety crisis shocked the world, prompting countries all over the world to actively develop renewable energy as an alternative energy source. In June 2008, Taiwan’s Executive Yuan approved the “Energy Policy for Sustainable Developmentâ€, which includes three main points. The policy framework, “Net source savings,†actively promotes the development of carbon-free renewable energy and effectively uses renewable energy in terms of “net sourceâ€. The development potential is expected to account for more than 8% of the power generation system in 2025.
III-V solar cells are the most energy-efficient among all solar cells, and more than 50 companies or organizations have invested in the development of concentrating solar power systems worldwide, among which Solar Junction researches and develops III-V multi-connections. The solar cell conversion efficiency has reached 43.5%; the HCPV system developed by Amonix in the United States has achieved a power generation efficiency of more than 30%. In 2008, the Institute invested considerable human resources and started to establish the Metal-organic Chemical Vapor Deposition (MOCVD) system and developed its own III-V multi-junction (InGaP/GaAs/Ge) solar cells. Epitaxial and process technology. Currently, the R&D team has developed solar cell components with 38% energy conversion efficiency; in the future, it will continue to refine the epitaxial and process technologies and move toward more than 40%.
In addition, the Institute has achieved remarkable results in the development of its Concentrated Photovoltaic (CPV) system technology. There are three major R&D achievements announced by the Institute for Nuclear Research: First, in the research and development of high-efficiency III-V solar cell components, the energy conversion efficiency has reached more than 38%. Secondly, the solar cell's epitaxial size has been increased to 8 inches (Figure 1), significantly reducing solar cell epitaxy and process costs. The third item, HCPV system research and development, has completed the construction of a MW-level high concentration solar power demonstration system (Figure 2).
The working principle of the HCPV system is a solar cell element made of a compound semiconductor material, and a condenser lens to concentrate sunlight energy on the solar cell element. The concentrating solar cell module is shown in FIG. 3 . In addition, a solar cell element made of a compound semiconductor material has a higher photoelectric conversion efficiency than a germanium-based solar cell element. Furthermore, using a condenser lens enables a single solar cell element to absorb hundreds of times more solar energy, significantly reducing the number of solar cell elements used; since the cost of a condenser lens is lower than that of a high-efficiency concentrating solar cell, it is used The condenser lens can greatly reduce the construction cost of the HCPV system. In addition, the application of the HCPV system can be applied to rooftop and decentralized power generation systems in addition to the establishment of large-scale solar power plants. At present, the development and application of high-efficiency concentrating solar cells have become one of the major trends in the development of solar cell components.
Gate Valve Lockout,Valve Lockout,Oem Valve Lockout
Lockout Station And Lockout Kit Padlock Co.,Ltd , http://www.chpadlock.com