May 2018

04.05.2018

# New Publications

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Hippel, Ted von (2018): Thermal removal of carbon dioxide from the atmosphere. Energy requirements and scaling issues

Hippel, Ted von (2018): Thermal removal of carbon dioxide from the atmosphere. Energy requirements and scaling issues. In Climatic Change 55 (D12), p. 1763. DOI: 10.1007/s10584-018-2208-0.

"I conduct a system-level study of direct air capture of CO2 using techniques from thermal physics. This system relies on a combination of an efficient heat exchanger, radiative cooling, and refrigeration, all at industrial scale and operated in environments at low ambient temperatures. While technological developments will be required for such a system to operate efficiently, those developments rest on a long history of refrigeration expertise and technology, and they can be developed and tested at modest scale. I estimate that the energy required to remove CO2 via this approach is comparable to direct air capture by other techniques. The most challenging aspect of building a system that could remove 1 billion tonnes of CO2 from the atmosphere per year is the power demand of 112 to 420 GW during the wintertime operational period."

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04.05.2018

# New Publications

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Geden, Oliver; et al. (2018): Integrating carbon dioxide removal into EU climate policy. Prospects for a paradigm shift

Geden, Oliver; Scott, Vivian; Palmer, James (2018): Integrating carbon dioxide removal into EU climate policy. Prospects for a paradigm shift. In WIREs Clim Change 354 (1), e521. DOI: 10.1002/wcc.521.

"Here we explore the political dimensions and policy implications of expectations for “negative emissions” in the European Union (EU), considering its largely successful leadership role in mitigation action and corresponding low‐carbon technology development and deployment. Carbon dioxide removal and especially Bio‐Energy with Carbon Capture and Storage present significant challenges to the EU's dominant climate policy paradigm and low‐carbon policy experience. Considering this challenge, we assess expectations for widespread implementation of carbon dioxide removal in the EU to be unrealistic, and explore possible pathways for its more limited introduction."

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02.05.2018

# Media

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Huffington Post: The Dangerous Belief That Extreme Technology Will Fix Climate Change

"Scientists have proposed solar radiation management, as it’s called, for decades as a form of global-scale geoengineering that could combat global warming. But few have done what Smith, a partner at a private equity firm and former airline executive, has done ― turned pie-in-the-sky, back-of-the-envelope calculations into a full-fledged feasibility study, complete with a development and operating budget for his fleet of planes."

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