Concentrated solar power

Concentrated solar power is a technology that utilizes mirrors or lenses to focus a large area of sunlight onto a small area, generating heat or electricity with the help of turbines designed by General Electric and Siemens. This method is often compared to photovoltaic systems, which convert sunlight directly into electricity using solar panels manufactured by SunPower and Trina Solar. Concentrated solar power systems are typically used in solar power plants such as the Ivanpah Solar Power Facility and the Crescent Dunes Solar Energy Project, which are designed by Bechtel and Fluor Corporation. The development of concentrated solar power technology has involved the collaboration of various organizations, including the National Renewable Energy Laboratory and the Sandia National Laboratories.

Introduction

Concentrated solar power has been gaining attention as a promising technology for generating renewable energy and reducing greenhouse gas emissions in countries like Australia and China. The concept of concentrated solar power dates back to the work of Archimedes, who used polished shields to focus sunlight and set fire to Roman ships during the Siege of Syracuse. In the modern era, researchers like Frank Shuman and Charles Greeley Abbot have made significant contributions to the development of concentrated solar power technology, with support from institutions like the University of California, Berkeley and the Massachusetts Institute of Technology. Companies like Abengoa and BrightSource Energy are also playing a crucial role in the advancement of concentrated solar power technology, with projects like the Solana Generating Station and the Ivanpah Solar Power Facility.

Principles

The principles of concentrated solar power involve the use of optical components like parabolic troughs and heliostats to focus sunlight onto a receiver, which is typically a heat exchanger designed by Alstom and Babcock & Wilcox. The heat generated by the concentrated sunlight is then used to produce steam, which drives a turbine to generate electricity with the help of generators manufactured by GE Power and Mitsubishi Heavy Industries. The efficiency of concentrated solar power systems depends on various factors, including the concentration ratio, the heat transfer coefficient, and the thermal energy storage system designed by Dow Chemical and BASF. Researchers at institutions like the University of Michigan and the California Institute of Technology are working to improve the efficiency of concentrated solar power systems, with funding from organizations like the United States Department of Energy and the European Union.

Technologies

There are several technologies used in concentrated solar power systems, including parabolic trough systems, solar tower systems, and dish stirling systems, which are designed by companies like Schott AG and Saint-Gobain. Parabolic trough systems use U-shaped mirrors to focus sunlight onto a receiver tube, which is typically filled with a heat transfer fluid like molten salt or synthetic oil developed by DuPont and ExxonMobil. Solar tower systems use a large field of heliostats to focus sunlight onto a receiver located at the top of a tower, which is designed by Bechtel and Fluor Corporation. Dish stirling systems use a parabolic dish to focus sunlight onto a receiver, which is typically a Stirling engine designed by United Technologies and Caterpillar Inc..

Applications

Concentrated solar power systems have various applications, including electricity generation, industrial process heat, and desalination, which are used in countries like Spain and South Africa. Electricity generation is the most common application of concentrated solar power systems, with projects like the Ivanpah Solar Power Facility and the Crescent Dunes Solar Energy Project generating electricity for the grid with the help of transmission lines designed by Siemens and Alstom. Industrial process heat is another significant application of concentrated solar power systems, with companies like Dow Chemical and BASF using concentrated solar power to generate heat for their industrial processes. Desalination is also an important application of concentrated solar power systems, with projects like the Shams Power Station in United Arab Emirates using concentrated solar power to generate fresh water from seawater.

Environmental_impact

The environmental impact of concentrated solar power systems is relatively low compared to traditional fossil fuel-based power plants, with emissions of greenhouse gases like carbon dioxide and nitrogen oxides significantly reduced. However, concentrated solar power systems can have some environmental impacts, including land use and water use, which are being addressed by researchers at institutions like the University of California, Berkeley and the Massachusetts Institute of Technology. The use of molten salt as a heat transfer fluid can also pose some environmental risks, including the potential for toxicity and leakage, which are being mitigated by companies like Abengoa and BrightSource Energy. Organizations like the Environmental Protection Agency and the International Energy Agency are working to minimize the environmental impact of concentrated solar power systems.

Economics

The economics of concentrated solar power systems are improving rapidly, with the cost of electricity generation from concentrated solar power decreasing by over 50% in the last decade, according to reports by Bloomberg New Energy Finance and International Renewable Energy Agency. The cost of concentrated solar power systems is highly dependent on the cost of capital, the cost of land, and the cost of labor, which are being reduced by companies like GE Power and Mitsubishi Heavy Industries. Governments like China and India are also providing incentives for the development of concentrated solar power systems, including tax credits and grants, which are being administered by organizations like the United States Department of Energy and the European Union. As the cost of concentrated solar power systems continues to decrease, it is likely that concentrated solar power will play an increasingly important role in the global energy mix, with projections by International Energy Agency and National Renewable Energy Laboratory indicating that concentrated solar power could generate up to 10% of global electricity by 2050. Category:Renewable energy