Category: solar thermochemistry

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Published at Energy Conversion and Management – Thermodynamic and economic analysis of a multi-energy complementary distributed CCHP system coupled with solar thermochemistry and active energy storage regulation process

Abstract: The combination of distributed energy systems (DES) and solar energy is considered a vital measure to save the usage of fossil energy. A new distributed combined cooling, heating and power (CCHP) system integrated with solar thermochemistry (STC) and energy storage (ES) units is proposed. The methane steam reforming (MSR) reaction is driven by solar energy to …

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US releases rule ensuring only green hydrogen gets $3/kg tax credit

Solar reactor uses solar thermal energy to split water to hydrogen Source: Hydrogen Insight The US government has finally unveiled its long-awaited proposed rules on clean hydrogen production, determining the criteria that developers will have to meet in order to qualify for the hydrogen tax credit of up to $3 per kilogram. The proposed guidelines …

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3D-printed ceria is a game-changer to increase solar fuel efficiency

3D-printing the perfect ceria structure enables incoming heat from a solar field of mirrors to spread evenly throughout a solar reactor.(How solar fuels are made: thermochemistry) IMAGE@Sebastian Sas Brunser 3D-printed ceria was one of the many brilliant ideas presented by international solar researchers at this year’s SolarPACES Conference in Sydney. In solar reactors for making …

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Methane pyrolysis with liquid metals in a bubble column reactor to generate green hydrogen and carbon

Methane Pyrolysis in a Liquid Metal Bubble Column Reactor Using a bubble column reactor at Karlsruher Institut für Technologie, the Liquid Metal Laboratory team is working on producing hydrogen from methane, the cheapest method, but without CO2 emissions – the problem with the cheapest method. The main product, besides hydrogen, is carbon, which, like green …

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Heliostat concentration boosted by shape-shifting glass

Heliostats get a concentration boost by bending and twisting the mirror with a mechanical frame By manipulating the shape of heliostats in real time, the optical efficiency of solar fields for tower CSP can be significantly increased, according to a paper presented at the New Mexico SolarPACES Conference: Heliostat with Automatic Shape Adjustment for High …

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$30 million in DOE funding for solar thermal fuel, heat, or storage

The U.S. Department of Energy (DOE) Solar Energy Technologies Office (SETO) announced the Solar-thermal Fuels and Thermal Energy Storage Via Concentrated Solar-thermal Energy funding opportunity, which will award $30 million for projects to produce fuels via renewable energy resources and improve thermal energy storage technologies. The research, development, and demonstration projects resulting from this funding …

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Solar hydrogen testing begins at CSIRO conference tour site

Solar hydrogen testing has begun at the CSIRO test site in Australia. The concentrated solar falling particle receiver seen here reaches the high temperatures used for solar thermochemistry. SolarPACES Conference 2023 will include a site tour here. IMAGE@Wil Gardner, CSIRO Tests are underway on a cutting edge renewable hydrogen technology that is being backed by …

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Published at Next Energy – Direct solar-driven thermochemical CO2-to-fuel conversion with efficiency over 39 % employing hierarchical triply periodic minimal surfaces biomimetic foam reactors

Abstract: Solar-driven CO2 reforming of CH4 is considered a promising approach for achieving CO2 emission reduction and clean energy utilization simultaneously. However, reactors suffer from uneven temperature distribution and severe carbon deposition, leading to low solar-to-fuel efficiency. This study introduces a novel strategy for highly efficient solar-driven thermochemical CO2-to-fuel conversion based on hierarchical triply periodic …

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Published at Energy Conversion and Management – Selection of iron-based oxygen carriers for two-step solar thermochemical splitting of carbon dioxide

Abstract: The two-step solar thermochemical cycle is a prospective clean energy technology that enables the direct splitting of water and carbon dioxide for solar fuel production. However, immature oxygen carriers fundamentally restrict the solar-to-fuel conversion efficiency and thus prevent this technology from immediate industrial uptake. Focusing on the conventional iron-based oxygen carriers, this study intends …

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Published at Energy Conversion and Management – Structural stabilization of granular Ca(OH)2 by coating with nanostructured additives for thermochemical cycling in a fixed reaction bed

Abstract: Thermochemical energy storage systems have a high potential to support a future energy supply based on renewables by providing comparably high storage capacities and option for long-term, cold and loss free storage, that allows a flexible utilization in several application areas. Due to its cost efficiency and abundance the reaction system Ca(OH)2/CaO is currently …

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