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Romero Rodriguez, C. (author), Chaves Figueiredo, S. (author), Chiaia, B. (author), Schlangen, E. (author)Cracking in concrete structures compromises the durability and functionality of the structures themselves. Different kinds of self-healing concretes, less or more sophisticated, have been developed in the past ten years to overcome early cracks in structures. An experimental study of a novel self-healing concrete is presented. Bitumen, used as...conference paper 2016
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Wang, M. (author), Infante Ferreira, C.A. (author)This paper describes a properties-optimization work for the working fluids in NH3 / ionic liquid (ILs) based single-effect absorption heat pumps. The optimum parameters of the IL can be used as criteria in screening task-specified ILs, which play the role of absorbents, in absorption heat pumps. First, a 8-parameter thermodynamic model to...conference paper 2016
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Echevarria Icaza, L. (author), van der Hoeven, F.D. (author), van den Dobbelsteen, A.A.J.F. (author)The urban heat island effect is often associated with large metropolises. However, in the Netherlands even small cities will be affected by the phenomenon in the future (Hove et al., 2011), due to the dispersed or mosaic urbanisation patterns in particularly the southern part of the country: the province of North Brabant. This study analyses the...journal article 2016
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- Ziabakhshganji, Z. (author), Donselaar, M.E. (author), Bruhn, D.F. (author), Nick, H.M. (author) conference paper 2016
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Al-Khoury, Rafid (author), Focaccia, S. (author)This paper introduces a semi-analytical model based on the spectral analysis method for the simulation of transient conductive-convective heat flow in an axisymmetric shallow geothermal system consisting of a double U-tube borehole heat exchanger embedded in a soil mass. The proposed model combines the exactness of the analytical methods with...journal article 2016
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Šavija, B. (author), Schlangen, E. (author)Phase change materials (PCMs) have found their use in concrete technology for increasing energy efficiency of building envelopes. In recent years, however, new potential applications for PCMs in concrete have been suggested, for example for reducing freeze-thaw damage and melting of ice forming on top of concrete pavements. A recent application...journal article 2016
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Habets, Michel (author), Scholten, Joni (author), Weiland, Siep (author), Coene, W.M.J.M. (author)The imaging quality of the projection optics of an extreme ultraviolet lithography scanner degrades under the influence of thermally induced deformations of its mirrors. Wavefronts of different reticle points encounter different parts of the deformed mirrors, resulting in a field dependent wavefront error. This paper presents how ideas from...conference paper 2016
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Hooimeijer, F.L. (author), Puts, H (author), Geerdink, T. (author)One of the most important goals for energy transition is to reduce CO2 by turning to renewable energy, such as solar and wind energy. However, the production of renewable energy is not always an integral part of the energy system. Instead, it may have a decentralized basis, even up to the household level. In the Netherlands, this decentralizing...journal article 2016
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Xiouras, C. (author), Radacsi, N. (author), Sturm, G.S.J. (author), Stefanidis, G. (author)We investigate the existence of specific/nonthermal microwave effects for the dehydration reaction of xylose to furfural in the presence of NaCl. Such effects are reported for sugars dehydration reactions in several literature reports. To this end, we adopted three approaches that compare microwave-assisted experiments with a) conventional...journal article 2016
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Muller, B. (author), Hagenbeek, M. (author), Sinke, J. (author)Fibre metal laminates with integrated heater elements have a promising potential as de- or anti-icing systems in aircraft structures. The alternating metal and composite lay-up in fibre metal laminates seems ideal for the development of a multifunctional skin with embedded heater elements. However, the long term durability needs to be carefully...journal article 2016
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Senders, F. (author), van Beurden, M. (author), Palardy, G. (author), Villegas, I.F. (author)Continuous ultrasonic welding of plastic films, fabrics, and even thermoplastic composite prepreg tape is a common industrial practice. However, continuous ultrasonic welding of stiff thermoplastic composite plates is challenging due to squeeze flow of resin at the welding interface, and significant local deformation of the welding stack, that...journal article 2016
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Post, W. (author), Bose, R.K. (author), Garcia, Santiago J. (author), van der Zwaag, S. (author)This work reports on the healing of early stage fatigue damage in ionomer/nano-particulate composites. A series of poly(ethylene-co-methacrylic acid) zinc ionomer/Fe3O4 nanoparticle composites with varying amounts of ionic clusters were developed and subjected to different levels of fatigue loading. The initiated damage was healed upon localized...journal article 2016
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Smith, A.L. (author), Hen, Amir (author), Magnani, Nicola (author), Sanchez, Jean Pierre (author), Colineau, Eric (author), Griveau, Jean Christophe (author), Raison, Philippe E. (author), Caciuffo, Roberto (author), Konings, R. (author), Cheetham, Anthony K. (author)The physical and chemical properties at low temperatures of hexavalent disodium neptunate α-Na<sub>2</sub>NpO<sub>4</sub> are investigated for the first time in this work using Mössbauer spectroscopy, magnetization, magnetic susceptibility, and heat capacity measurements. The Np(VI) valence state is confirmed by the isomer shift value of the...journal article 2016
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Satyavada, H. (author), Baldi, S. (author)Condensing boilers use waste heat from flue gases to pre-heat cold water entering the boiler. Flue gases are condensed into liquid form, thus recovering their latent heat of vaporization, which results in as much as 10%–12% increase in efficiency. Modeling these heat transfer phenomena is crucial to control this equipment. Despite the many...journal article 2016
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Castro Cerda, F. (author), Schulz, B. (author), Papaefthymiou, S. (author), Artigas, A. (author), Monsalve, A. (author), Petrov, R.H. (author)The effect of heating rate on the formation and decomposition of austenite was investigated on cold-rolled low carbon steel. Experiments were performed at two heating rates, 150 ˚C/s and 1500 ˚C/s, respectively. The microstructures were characterized by means of scanning electron microscopy (SEM) and electron backscattered diffraction (EBSD)....journal article 2016
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Ebrahimi, Amin (author), Naranjani, Benyamin (author)In this study, a flat-plate channel configured with pyramidal protrusions are numerically analysed for the first time. Simulations of laminar single-phase fluid flow and heat transfer characteristics are developed using a finite-volume approach under steady-state condition. Pure water is selected as the coolant and its thermo-physical...journal article 2016
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Turrin, M. (author), Tenpierik, M.J. (author), De Ruiter, P. (author), Van der Spoel, W.H. (author), Chang Lara, C. (author), Heinzelmann, F. (author), Teuffel, P. (author), Van Bommel, W. (author)The DoubleFace project aims at developing a new product that passively improves thermal comfort of indoor and semi-indoor spaces by means of lightweight materials for latent heat storage, while simultaneously allowing daylight to pass through as much as possible. Specifically, the project aims at designing and prototyping an adjustable...journal article 2015
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Bezrukavnikov, S.V. (author)Since the first protein structure reported, the understanding of how proteins fold so fast and efficiently into such peculiar shapes has quickly become one of the major problems of biology. Protein folding in the living cell features a new level of complexity due to highly crowded cellular environment. In order to overcome this problem, cells...doctoral thesis 2015
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Van Woerden, J.L. (author)The district heating system is currently a natural monopoly. Introducing multiple producers on district heating networks could have many benefits. By developing a conceptual model that captures the technical, economic and institutional layers of the district heating system, a solid basis for a simulation model can be made. The proposed agent...master thesis 2015
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Theunisse, I.A.H. (author)The urban heat island (UHI) describes the phenomena that the city heats up faster and stays warmer than its rural surroundings. The combination of ageing societies and increasing temperature, due to climate change, poses serious challenges for the health and wellbeing of the increasing urban population. Assessments of the urban heat island...master thesis 2015