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Woudstra, N. (author)General There is a general understanding that the so-called “developed countries” have to change their way of life including their energy supply into a more sustainable way. But even in the case of unanimity with regard to the direction, there are still many opinions about the way to follow. This thesis discusses problems and possibilities of...doctoral thesis 2012
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Liu, Q. (author)Porous asphalt shows excellent performance in both noise reduction and water drainage. Although porous asphalt has these great qualities, its service life is much shorter (sometimes only half) compared to dense graded asphalt roads. Ravelling, which is the loss of aggregate particles from the surface layer, is the main damage mechanism of porous...doctoral thesis 2012
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Reichard, C.A. (author)Topology optimization is a valuable tool that can assist engineers in the design of many complex problems. However optimization techniques often have difficulties dealing with problems that have a strong tendency to localize in the global design domain forming a sparse design. Typically an extremely fine mesh is needed to capture these results,...master thesis 2012
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Van de Korput, R.J.A. (author)CHP-Belduco is a Combined Heat and Power plant, which was built on the site of Belchem, a chemical company in Flanders, Belgium. The purpose of the plant is to deliver steam and other utilities to the chemical plants on the site. In order to do that efficiently, the combination of heat and electricity is used. The plant is owned and managed by...master thesis 2012
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Kazemi Kamyab, V. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)Thermal interaction of fluids and solids, or conjugate heat transfer (CHT), is encountered in many engineering applications. Since time-accurate computations of such coupled problems can be computationally expensive, we consider loosely-coupled and strongly- coupled solution algorithms in which higher order multi-stage Runge-Kutta schemes are...conference paper 2012
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De Zeeuw, J.Q. (author)Recently, an amount of methane was produced with hot water in the Ammerlaan geothermal field. The presence of methane influences fluid properties and fluid flow in the well, leading to changes in the pressure and temperature drop in the producing well. This study presents a model for non-isothermal two-phase flow in geothermal wells. In this...bachelor thesis 2012
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Ramanandan, G.K.P. (author), Ramakrishnan, G. (author), Planken, P.C.M. (author)Terahertz (THz) transmission spectroscopy is used to measure the oxidation kinetics of copper thin films evaporated on silicon substrates. The transmission of broadband THz pulses from 1 to 7 THz through the copper film is measured while it gets oxidized at an elevated temperature in ambient air. The change in the transmitted THz electric field...journal article 2012
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Ligtvoet, A. (author)Although constructing a district heating network could be portrayed as a simple cost/benefit calculation, we suggest that other factors play an important role that cannot be ignored. In this contribution, we suggest that theories concerning cooperation (in industrial networks) roughly apply to micro (e.g. attitudes toward risk and trust), meso ...conference paper 2012
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Böhler, R. (author), Welland, M.J. (author), De Bruycker, F. (author), Boboridis, K. (author), Janssen, A. (author), Eloirdi, R. (author), Konings, R.J.M. (author), Manara, D. (author)This work revisits the melting behaviour of neptunium dioxide, an actinide compound which can be produced in the nuclear fuel during operation, and which has an important impact on the nuclear fuel and waste radioactivity especially on the very long term. The present experimental approach employs remote laser heating under controlled atmosphere...journal article 2012
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Hortensius, H.L. (author), Öztürk, A. (author), Zeng, P. (author), Driessen, E.F.C. (author), Klapwijk, T.M. (author)Antenna-coupled suspended single carbon nanotubes exposed to 108?GHz microwave radiation are shown to be selectively heated with respect to their metal contacts. This leads to an increase in the conductance as well as to the development of a power-dependent DC voltage. The increased conductance stems from the temperature dependence of tunneling...journal article 2012
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Loukopoulou, A. (author)This project is aiming to reduction of energy demands, and greenhouse gas emissions consequently, by achieving less heating demand and higher thermal comfort for residential buildings. The choice of refurbishment as the best solution for that is investigated. For the needs of the project, a case study was used, carefully chosen to be...master thesis 2012
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Ugur, D. (author), Storm, A.J. (author), Verberk, R. (author), Brouwer, J.C. (author), Sloof, W.G. (author)An isothermal sensor is developed to quantify the atomic hydrogen flux on a surface, which can be located at any distance from the molecular hydrogen cracking unit. This flux is determined from the measured heat effect due to recombination of atomic hydrogen at the sensor surface. The temperature of the sensor was kept constant at 350°C to keep...journal article 2012
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Dwaikat, M.M.S. (author), Kodur, V.K.R. (author)Steel structures in building are to be provided with external insulation to delay temperature rise and associated strength degradation when exposed to fire. However, due to delicateness and fragility of some insulation systems, damage might occur in these insulation systems during their service life, and such damage can lead to rapid rise in...journal article 2012
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Gunnink, F.L. (author)The main focus of this research was on the heat flow (density) through a roof in summertime. The effect of different roof toppings and construction types on the heat flow are investigated. Both a field experiment as well as a model were set up, to acquire data and generate results. Central research question was: What difference does roofing...master thesis 2012
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Kleerekoper, L. (author), Van den Dobbelsteen, A.A.J.F. (author), Van Dorst, M.J. (author), Hordijk, G.J. (author)Urban Heat Islands in cities in the Netherlands are likely to increase due to a predicted climate change and the continuously increasing expansion and densification of cities, In contrast to rural areas cities are warmer because their paved surfaces retain heat, buildings block cooling winds and the lack of vegetation and water reduces...conference paper 2011
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Ding, Y. (author)Characterising combustion of diesel engines is not only necessary when researching the instantaneous combustion phenomena but also when investigating the change of the combustion process under variable engine operating conditions. An effective way to achieve this goal is to parameterize the combustion process using a finite combustion stage...doctoral thesis 2011
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Hoving, D. (author)Heat and cold storage systems are among the most popular ways to save energy, but they are not yet delivering the returns they promise. According to researchers from the faculty of Civil Engineering and Geosciences, it is time for this to change.journal article 2011
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- Schutten, G.J.M. (author) master thesis 2011
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Van Beuningen, F.W.G.M. (author)Geothermal energy production is an interesting alternative for the fossil energy production being depleted, being, a sustainable method with a lot of potential in the Netherlands and abroad. One of the main initiators of geothermal energy production in the Netherlands is the Delft Geothermal Project (DAP). Furthermore DAP supports the...bachelor thesis 2011
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Hosseini, L. (author)Air conditioning is one of the major consumers of electrical energy in many parts of the world. The demand can be expected to increase because of the changing working times, increased comfort expectations and global warming. With more air conditioning units, the electricity demand has been rising thereby increasing the use of fossil fuels and...master thesis 2011