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van Esch, M.S. (author), Bloemendal, Martin (author), Hartog, Niels (author), Vardon, P.J. (author)Aquifer Thermal Energy Storage (ATES) is mostly used to store heat and cold in groundwater at relatively low temperatures for heating and cooling buildings. These systems emit 3-4 times less CO2 when compared to gas heating, but still require substantial amounts of electricity to run due to the use of a heat pump ( 60%). In typical ATES systems...abstract 2022
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Hartog, J. (author)A more efficient method for the estimation of failure probabilities using monotonicity, a common feature of reliability problems, is presented and evaluted. The method is based on Monte Carlo simulation.bachelor thesis 2010
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Van Heest, R. (author), Hartog, R. (author), Hellendoorn, V. (author), Sawant, A.A. (author)For companies that deliver hardware services, the ability to scale dynamically has many advantages. In a special case, a company may have some computing resources available and desire to scale out when traffic peaks. A periodical budget may then be allocated, which needs to be used efficiently. This can be achieved through a combination of...bachelor thesis 2013
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- Hartog, J.P. (author), Koutamanis, A. (author), Luscuere, P.G. (author) conference paper 1998
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- Hartog, J.P. den (author), Koutamanis, A. (author), Luscuere, P.G. (author) conference paper 1998
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Beernink, Stijn (author), Hartog, Niels (author), Bloemendal, Martin (author), van der Meer, Marlous (author)Energy consumption for space heating and cooling of buildings can be decreased by 40-80% by use of Aquifer Thermal Energy Storage (ATES). ATES is a proven technique, however, it is not known how efficient currently operating systems are recovering stored energy from the subsurface and how this can be determined with available data. Recent...conference paper 2019
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Bloemendal, Martin (author), Beernink, Stijn (author), Hartog, Niels (author), van Meurs, Bart (author)Aquifer Thermal Energy Storage (ATES) systems combined with a heat pump save energy for space heating and cooling of buildings. In most countries the temperature of the stored heat is allowed up to 25-30°C. However, when heat is available at higher temperatures (e.g. waste heat, solar heat), it is more efficient to store higher temperatures...conference paper 2019
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- Lu, Y (author), Kuipers, F.A. (author), Hartog, F (author), Van Mieghem, P.F.A. (author) conference paper 2011
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Bloemendal, Martin (author), Hartog, N (author)Aquifer thermal energy storage (ATES) is a technology to sustainably provide space heating and cooling. Particularly in The Netherlands the number of ATES systems has grown rapidly in the past decade, often with the (re)development of urban areas. To meet objectives for greenhouse gas emission reduction the number of ATES systems is expected and...conference paper 2016
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Chicco, Jessica Maria (author), Antonijevic, Dragi (author), Bloemendal, Martin (author), Cecinato, Francesco (author), Goetzl, Gregor (author), Hajto, Marek (author), Hartog, Niels (author), Mandrone, Giuseppe (author), Vacha, Damiano (author), Vardon, P.J. (author)For efficient operation of heating and cooling grids, underground thermal energy storage (UTES) can be a key element. This is due to its ability to seasonally store heat or cold addressing the large mismatch between supply and demand. This technology is already available and there are many operational examples, both within and outside a...conference paper 2022
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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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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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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 (<...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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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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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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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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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), 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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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