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Veraar, R.G. (author), Oosthuisen, R. (author), Andersson, K. (author)Ramjet propulsion for gun-launched projectiles has received substantial attention since the invention of the ramjet engine concept in 1913. After the second World War, projectiles using solid fuel gained interest due to their inherent simplicity and robustness. Throughout the world, research and development programs have been and still are being...article 2022
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Pardhi, S. (author), Chakraborty, S. (author), Tran, D.-D. (author), El Baghdadi, M. (author), Wilkins, S. (author), Hegazy, O. (author)Long-haul heavy-duty vehicles, including trucks and coaches, contribute to a substantial portion of the modern-day European carbon footprint and pose a major challenge in emissions reduction due to their energy-intensive usage. Depending on the hydrogen fuel source, the use of fuel cell electric vehicles (FCEV) for long-haul applications has...article 2022
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Boor, V. (author), Frijns, J.E.B.M. (author), Perez-Gallent, E. (author), Giling, E. (author), Laitinen, A.T. (author), Goetheer, E.L.V. (author), van den Broeke, L.J.P. (author), Kortlever, R. (author), de Jong, W. (author), Moultos, O.A. (author), Vlugt, T.J.H. (author), Ramdin, M. (author)We performed H-cell and flow cell experiments to study the electrochemical reduction of CO2 to oxalic acid (OA) on a lead (Pb) cathode in various nonaqueous solvents. The effects of anolyte, catholyte, supporting electrolyte, temperature, water content, and cathode potential on the Faraday efficiency (FE), current density (CD), and product...article 2022
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Volders, J. (author), Elen, K. (author), Raes, A. (author), Ninakanti, R. (author), Kelchtermans, A.S. (author), Sastre, F. (author), Hardy, A. (author), Cool, P. (author), Verbruggen, S.W. (author), Buskens, P. (author), van Bael, M.K. (author)This study reports the low temperature and low pressure conversion (up to 160 ◦C, p = 3.5 bar) of CO2 and H2 to CO using plasmonic Au/TiO2 nanocatalysts and mildly concentrated artificial sunlight as the sole energy source (up to 13.9 kW·m−2 = 13.9 suns). To distinguish between photothermal and non-thermal contributors, we investigated the...article 2022
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Deschle, N. (author), van Ark, E.J. (author), van Gijlswijk, R. (author), Janssen, R. (author)Pollutant emissions have been a topic of interest in the last decades. Not only environ mentalists but also governments are taking rapid action to reduce emissions. As one of the main contributors, the transport sector is being subjected to strict scrutiny to ensure it complies with the short and long-term regulations. The measures imposed by...article 2022
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Jin, Y. (author), Scherer, L. (author), Sutanudjaja, E.H. (author), Tukker, A. (author), Behrens, P. (author)Large numbers of China's thermal power plants are in water-stressed regions. Changes in the availability of water resources due to climate change may impact the vulnerability of regional and national electricity generation. Here we explore this vulnerability for coal-fired power units (CPUs) as the generation-type most exposed to climate risk....article 2022
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Bekdemir, C. (author), Doosje, E. (author), Seykens, X. (author)At present, the hydrogen combustion engine has gained renewed interest from the heavy-duty internal combustion engine (ICE) industry as an enabler for fast decarbonization of well-to-wheel emissions and reinforced by the vast commitment of key stakeholders to establish a green hydrogen infrastructure. Past studies have often focused on partial...conference paper 2022
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Boymans, E.H. (author), Nijbacker, T. (author), Grootjes, A.J. (author), Vreugdenhil, B.J. (author)Advanced biofuels are required to facilitate the energy transition away from fossil fuels and lower the accompanied CO2 emissions. Particularly, jet fuel needs a renewable substitute, for which novel production routes and technology are needed that are more efficient and economically viable. The direct conversion of bio-syngas into fuel is one...article 2022
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Detz, R.J. (author), van der Zwaan, B. (author)Successful deployment of renewable fuel production requires substantial cost reduction along the entire value chain of the underlying manufacturing routes. To improve their performance, renewable fuel pro duction technologies should follow a cost-reducing learning curve. In this article, we adopt recent evi dence that learning-by-doing is...article 2022
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- Verhaegh, J. (author), Kupper, F. (author), Willems, F. (author) article 2022
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Kaminski, T. (author), Scholze, M. (author), Rayner, P. (author), Houweling, S. (author), Vossbeck, M. (author), Silver, J. (author), Lama, S. (author), Buchwitz, M. (author), Reuter, M. (author), Knorr, W. (author), Chen, H.W. (author), Kuhlmann, G. (author), Brunner, D. (author), Dellaert, S.N.C. (author), Denier van der Gon, H.A.C. (author), Super, I. (author), Loscher, A. (author), Meijer, Y. (author)The European Copernicus programme plans to install a constellation of multiple polar orbiting satellites (Copernicus Anthropogenic CO2 Monitoring Mission, CO2M mission) for observing atmospheric CO2 content with the aim to estimate fossil fuel CO2 emissions. We explore the impact of potential CO2M observations of column-averaged CO2 (XCO2),...article 2022
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Tosti, L. (author), van Zomeren, A. (author), Pels, J.R. (author), Comans, R.N.J. (author)Purpose: This study evaluates the potential of biomass ash as raw clinker material and the influence of biomass feedstock and thermal conversion technology on biomass ash properties. Methods: A set of criteria for biomass feedstock and ash properties (i.e. CaO/SiO2 ratio and burnability) are established. A large dataset was collected and the...article 2021
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Luo, X. (author), Grossbichler, M. (author), Waschl, H. (author), Donkers, M.C.F. (author), de Jager, B. (author), Willems, F.P.T. (author)When controlled in an open-loop fashion, both stationary and dynamical diesel engine performance can deteriorate due to disturbances. Although cycle-to-cycle fuel injection control has the potential of reducing the performance degradation by manipulating the fueling profile in real time, this potential has not been thoroughly studied. This is...article 2021
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Okullo, S.J. (author), Reynèsc, F. (author), Hofkes, M. (author)The theory on the green paradox has focused primarily on the consumption of a clean substitute produced using a static technology. In reality, we observe the gradual accu mulation of the clean substitute’s capacity, suggesting that supply decisions for the clean substitute and finite carbon resource should both be treated as dynamic. This paper...article 2021
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Usmani, O.A. (author), de Wilde, H. (author)The impact of using renewable fuels means multiplying fuel cost by a factor 2-6. The aim of this document is to illustrate how large the impact of replacing fossil fuels with renewable ones is in the aviation sector.report 2021
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de Wilde, H. (author)Goal: Provide substantiation for the extra costs of biokerosene and synthetic kerosene, compared to kerosene from fossil origin that we use in the article on aviation on energy.nl, supported by numbers from authoritative sources.other 2021
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Diepstraten, N. (author), Seykens, X.L.J. (author), Somers, L.M.T. (author)High Pressure Direct Injection (HPDI) is a promising combustion concept for the medium- to heavy-duty industry to combat climate change. It uses a pilot diesel injection to ignite the main fuel consisting of Natural Gas (NG). Both fuels are injected directly in the combustion chamber using a dedicated HPDI injector. A significant reduction in...conference paper 2021
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Evaluation of Steam-Exploded Wood Pellets Storage and Handling Safety in a Coal-Designed Power PlantAbelha, P. (author), Cieplik, M.K. (author)Solid biofuels are currently used in increasing volumes to replace fossil equivalents. Next to the traditional wood derived fuels, the advancement of biomass upgrading technologies like steam explosion (SE), followed by pelleting, further broadens the variety of materials on the market. This thermochemical and mechanical upgrading improves...article 2021
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Willems, R. (author), Willems, F. (author), Simpson, T. (author), Albrecht, B. (author), Deen, N. (author), Somers, B. (author)CO2 regulations on heavy-duty transport are introduced in essentially all markets within the next decade, in most cases in several phases of increasing stringency. To cope with these mandates, developers of engines and related equipment are aiming to break new ground in the fields of combustion, fuel and hardware technologies. In this work, a...conference paper 2020
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- Xia, L. (author), de Jager, B. (author), Donkers, T. (author), Willems, F. (author) article 2020