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Hendrikse, Hans C. (author), El Khallabi, Hamza (author), Hartog, Thomas (author), Varveri, Aikaterini (author), Tolboom, Anthon (author)
The concept of a circular economy, where waste materials are transformed into valuable resources, is gaining increasing attention. However, many waste streams are difficult to recycle due to their mixed composition and broad molecular distribution. This paper explores the potential of repurposing mixed materials, specifically focusing on...
journal article 2023
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Beernink, S.T.W. (author), Hartog, Niels (author), Vardon, P.J. (author), Bloemendal, Martin (author)
The technical and economic success of an Aquifer Thermal Energy Storage (ATES) system depends strongly on its thermal recovery efficiency, i.e. the ratio of the amount of energy that is recovered to the energy that was injected. Typically, conduction most strongly determines the thermal recovery efficiency of ATES systems at low storage...
journal article 2023
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Carrasco Grau, J. (author), van Campenhout, O.W.G. (author), Hartog, Friso H. (author), van Nesselrooij, M. (author), Baars, W.J. (author), Schrijer, F.F.J. (author)
Chevron-shaped protrusions have been proposed in the literature for turbulent skin friction reduction. However, there is no consensus on the performance of this passive flow control technique; both an increase and a decrease in drag have been observed in previous studies. There is also no experimental evidence to support the working mechanism...
journal article 2023
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van der Schans, M.L. (author), Bloemendal, Martin (author), Robat, Niels (author), Oosterhof, Ate (author), Stuyfzand, Pieter Jan (author), Hartog, Niels (author)
Larger well diameters allow higher groundwater abstraction rates. But particularly for the construction of wells at greater depth, it may be more cost-efficient to only expand the borehole in the target aquifer. However, current drilling techniques for unconsolidated formations are limited by their expansion factors (<2) and diameters (&lt...
journal article 2022
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Bloemendal, Martin (author), van Esch, M.S. (author), Vardon, P.J. (author), Pape, J. J. (author), Hartog, N. (author)
Governments and companies have set high targets in avoiding CO2 emissions and reducing energy. Aquifer Thermal Energy Storage (ATES) systems can contribute by overcoming the temporal mismatch between the availability of sustainable heat (during summer) and the demand for heat (during winter). Therefore, ATES is an increasingly popular...
journal article 2022
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Beernink, S.T.W. (author), Bloemendal, Martin (author), Kleinlugtenbelt, Rob (author), Hartog, Niels (author)
Low temperature (<25 °C) Aquifer Thermal Energy Storage (ATES) systems have a world-wide potential to provide low-carbon space heating and cooling for buildings by using heat pumps combined with the seasonal subsurface storage and recovery of heated and cooled groundwater. ATES systems increasingly utilize aquifer space, decreasing the...
journal article 2022
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van der Roest, E. (author), Beernink, S.T.W. (author), Hartog, Niels (author), van der Hoek, J.P. (author), Bloemendal, Martin (author)
In the energy transition, multi-energy systems are crucial to reduce the temporal, spatial and functional mismatch between sustainable energy supply and demand. Technologies as power-to-heat (PtH) allow flexible and effective utilisation of available surplus green electricity when integrated with seasonal heat storage options. However, insights...
journal article 2021
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Janssen, M.F.W.H.A. (author), Hartog, M.W. (author), Matheus, R. (author), Ding, Aaron Yi (author), Kuk, George (author)
Computational artificial intelligence (AI) algorithms are increasingly used to support decision making by governments. Yet algorithms often remain opaque to the decision makers and devoid of clear explanations for the decisions made. In this study, we used an experimental approach to compare decision making in three situations: humans making...
journal article 2020
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Bloemendal, Martin (author), Hartog, Niels (author)
Aquifer thermal energy storage (ATES) is a technology with worldwide potential to provide sustainable space heating and cooling using groundwater stored at different temperatures. The thermal recovery efficiency is one of the main parameters that determines the overall energy savings of ATES systems and is affected by storage specifics and site...
journal article 2018
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Hartog, Niels (author), Stuyfzand, Pieter Jan (author)
Managed Aquifer Recharge (MAR) is a promising method of increasing water availability in water stressed areas by subsurface infiltration and storage, to overcome periods of drought, and to stabilize or even reverse salinization of coastal aquifers. Moreover, MAR could be a key technique in making alternative water resources available, such as...
journal article 2017
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Stuyfzand, Pieter Jan (author), Smidt, Ebel (author), Gerardus Zuurbier, Koen (author), Hartog, Niels (author), Dawoud, Mohamed A. (author)
To be able to overcome water shortages, Abu Dhabi Emirate started an Aquifer Storage and Recovery (ASR) project with desalinated seawater (DSW) as source water near Liwa. It is the largest DSW-ASR project in the world (stored volume ~10 Mm<sup>3</sup>/year), and should recover potable water for direct use. DSW is infiltrated into a desert...
journal article 2017
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Bouma, T. J. (author), van Belzen, J. (author), Balke, T. (author), van Dalen, J.H. (author), Klaassen, P. (author), Hartog, A. M. (author), Callaghan, D.P. (author), Hu, Z. (author), Stive, M.J.F. (author), Temmerman, S. (author), Herman, P.M.J. (author)
Our study aims to enhance process understanding of the long-term (decadal and longer) cyclic marsh dynamics by identifying the mechanisms that translate large-scale physical forcing in the system into vegetation change, in particular (i) the initiation of lateral erosion on an expanding marsh, and (ii) the control of seedling establishment in...
journal article 2016
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Vegter, R.J.K. (author), Hartog, J. (author), De Groot, S. (author), Lamoth, C.J. (author), Bekker, M.J. (author), Van der Scheer, J.W. (author), Van der Woude, L.H.V. (author), Veeger, H.E.J. (author)
Background To propel in an energy-efficient manner, handrim wheelchair users must learn to control the bimanually applied forces onto the rims, preserving both speed and direction of locomotion. Previous studies have found an increase in mechanical efficiency due to motor learning associated with changes in propulsion technique, but it is...
journal article 2015
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Sagt, C.M.J. (author), Ten Haaft, P.J.T. (author), Minneboo, I.M. (author), Hartog, M.P. (author), Damveld, R.A. (author), Van der Laan, J.M. (author), Akeroyd, M. (author), Wenzel, T.J. (author), Luesken, F.A. (author), Veenhuis, M. (author), Van der Klei, I. (author), De Winde, J.H. (author)
Background: Enzyme production in microbial cells has been limited to secreted enzymes or intracellular enzymes followed by expensive down stream processing. Extracellular enzymes consists mainly of hydrolases while intracellular enzymes exhibit a much broader diversity. If these intracellular enzymes could be secreted by the cell the potential...
journal article 2009
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van de Kaa, G. (author), Hartog, F. (author), de Vries, H.J. (author)
In this study, we apply a step-by-step approach for the identification of standards for home networking. We develop a classification and we use this classification to categorize sixty-four (sets of) standards. By developing this categorization, we have brought order to the chaos of home networking standards.
journal article 2009
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