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High Temperature Corrosion Resistance Of Alloy N07740 In Solar And Low Emission Ultrasupercritical Power Generation

In recent years, solar energy technology has received particular emphasis in the interest of reducing CO2 emissions.  Concentrated solar power (CSP) technology received an initial boost from the installation of nine parabolic trough-based electricity-generating systems totaling 354 megawatts of capacity in the 1980’s.  Solar One, operational in 1982 and supported by the DOE and an industrial consortium, illustrate utilization of a circulating heat transfer fluid to produce steam to drive a turbine generating electricity.  Solar Two in 1996 demonstrated energy storage so that solar power could be generated during the night.1  In the ensuing decades, additional capacity has increasingly been installed worldwide, comprised primarily of both parabolic trough and central tower CSP technologies,  As of 2019, global installed capacity totaled 6.2 GW, with an additional 21 GWh planned of installed thermal energy storage (TES) comprised primarily of molten salts.   

Product Number: 51322-17945-SG
Author: Stephen McCoy, John deBarbadillo, Brian Baker, Mark Anderson
Publication Date: 2022
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$20.00
$20.00

Nickel superalloys are of increasing interest in new and emerging energy production applications for their high temperature mechanical properties, stability, durability and corrosion resistance. The precipitation hardenable Ni-Co-Cr superalloy N07740 has been developed for high pressure – high temperature environments and is an ASME code approved material and originally designed for fossil fuel power generation. New applications for the material include concentrated solar power receiver tubes due to its very high creep and fatigue strength in the temperature range 580 to 825C . The solar receiver tubes contain a heat transfer medium of molten salts used to transfer and store the solar energy. Solar receiver technology is also being combined with new ultrasupercritical power cycles which have potential advantages of high efficiency and reduced demand for water in desert environments. 

Nickel superalloys are of increasing interest in new and emerging energy production applications for their high temperature mechanical properties, stability, durability and corrosion resistance. The precipitation hardenable Ni-Co-Cr superalloy N07740 has been developed for high pressure – high temperature environments and is an ASME code approved material and originally designed for fossil fuel power generation. New applications for the material include concentrated solar power receiver tubes due to its very high creep and fatigue strength in the temperature range 580 to 825C . The solar receiver tubes contain a heat transfer medium of molten salts used to transfer and store the solar energy. Solar receiver technology is also being combined with new ultrasupercritical power cycles which have potential advantages of high efficiency and reduced demand for water in desert environments. 

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