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Van Reisen, J.L.B. (author)Process plants have high energy consumption. Much energy can be saved by a proper design of the heat exchanger network, which contains the main heat transferring equipment of the plant. Existing plants can often be made more energy-efficient by a retrofit: the (physical) modification of the equipment and piping in the heat exchanger network....doctoral thesis 2008
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Houwing, M. (author), Negenborn, R.R. (author), De Schutter, B. (author)The increasing presence of distributed energy resources, information and intelligence in the electricity infrastructure increases the possibilities for larger economic efficiency of power systems. This work shows the possible cost advantages of applying a model predictive control (MPC) strategy to residential energy systems. MPC can take future...conference paper 2008
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Genceli, F.E. (author)A novel crystallization technology, Eutectic Freeze Crystallization (EFC) has been investigated and further developed in this thesis work. EFC operates around the eutectic temperature and composition of aqueous solutions and can be used for recovery of (valuable) dissolved salts (and/or or acids) and water from a wide variety of aqueous process...doctoral thesis 2008
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Knulst, A.J. (author)Background During eye surgery in patients suffering Age Related Macular Degeneration translocating a graft of tissue without damaging the vulnerable top layer is highly problematic using the currently available instruments. This study presents indirect Heat Induced Attachment and Detachment (HIAD) as a new concept for single side tissue...master thesis 2007
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- Andrés de la Fuente, J.I. (author) doctoral thesis 2007
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Agung, A. (author)In this thesis a conceptual design of an innovative high temperature reactor based on the fluidization principle (FLUBER) is proposed. The reactor should satisfy the following requirements: (a) modular and low power, (b)) large shutdown margin, (c) able to produce power when the bed of particles expands and stop as soon as the coolant flow is...doctoral thesis 2007
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Lau, G.K. (author), Goosen, J.F.L. (author), Van Keulen, F. (author), Chu Duc, T. (author), Sarro, P.M. (author)A powerful and effective design of a polymeric thermal microactuator is presented. The design has SU-8 epoxy layers filled and bonded in a meandering silicon (Si) microstructure. The silicon microstructure reinforces the SU-8 layers by lateral restraint. It also improves the transverse thermal expansion coefficient and heat transfer for the...journal article 2007
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Van Gendt, G.J. (author)The fuel composition of the Generation IV 600 MWth 'efficient' Gas Cooled Fast Reactor (GCFR) that realizes zero breeding gain without using fertile blankets is determined. The analysis includes all the stages of the nuclear fuel cycle, including irradiation, reprocessing and fuel fabrication. The time-dependent multiplication factor, reactor...master thesis 2007
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- Boderie, P.M.A. (author), Meijers, E.M. (author), Penailillo Burgos, R.S. (author) report 2006
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Pronk, P. (author)Ozon layer depletion and global warming by synthetic refrigerants forces refrigeration industries to switch over to natural but hazardous refrigerants like ammonia and hydrocarbons. A promising technology to safely use the latter refrigerants is the application of indirect refrigeration systems with ice slurry as heat transfer fluid. Ice slurry,...doctoral thesis 2006
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Raisee, M. (author), Niroobakhsh, Z. (author), Jafari, A. (author)In the present paper, the effects of adding nanoscale metallic particles on the hydrodynamic and thermal characteristics of laminar liquid flow (water and ethylene glycol) through two-dimensional and axi-symmetric passages are numerically investigated. The present numerical results are obtained using a 2D finite-volume code which solves the...conference paper 2006
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Yao, J. (author), Patel, M.K. (author), Yao, Y. (author), Mason, P.J. (author)Numerical simulation has been conducted for the investigation of heat transfer in a rectangular, highaspect ratio microchannel with heat sinks, similar to an experimental study. Water at ambient temperature is used as working fluid and the heating power of 180 W is introduced via electronic cartridges in the solids. Three channel heights of 0.3...conference paper 2006
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Tang, J.H. (author), Jiang, B. (author)A numerical calculation procedure based on the least-squares finite element method (LSFEM) is employed to study the fluid flow and heat transfer in a 3-D heat exchangers with in-lined and staggered multiple-row (4 rows) tubes. In this study, the fin pitch of the heat exchanger is 8 fins per inch and the fluid flow is assumed steady,...conference paper 2006
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Verstraete, T. (author), Alsalihi, Z. (author), Van den Braembussche, R.A. (author)A Conjugate Heat Transfer (CHT) analysis allows the calculation of the heat transfer and temperature of a body placed in a fluid. The CHT analysis takes into account both the conduction in the solid and the convection in the fluid. Present paper describes a CHT method that uses two separate solvers: one CFD solver dedicated to the flow...conference paper 2006
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Cebula, A. (author), Sobota, T. (author)Local heat transfer from a cylinder in tube bank has been extensively studied. In many applications such as design of heat exchangers, detailed information regarding the circumferential and longitudinal variation of heat transfer to a cylinder is required. There are many different methods for measuring local heat transfer like techniques using...conference paper 2006
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Lee, J.I. (author), Kim, C. (author), Kim, K.H. (author)The purpose of this paper is to develop an accurate analysis code for the flow of arc-heater by employing advanced numerical models. Governing equations are hyperbolic-type axisymmetric Navier-Stokes equations which include joule heating by arc, radiation and turbulent transport effect. Joule heating is simply calculated by Ohms law with the...conference paper 2006
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Duda, P. (author), Cebula, A. (author), Dwornicka, R. (author)High thermal stresses are created during the operation of power block devices such as boiler drums, outlet headers, steam valves, turbines and heat exchangers. Due to a cyclic character of such stresses, a phenomenon of low-cyclic fatigue occurs, which may lead to the formation of fractures. Manufacturers of power block devices frequently advice...conference paper 2006
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Rohde, M. (author)Laser surface melting and alloying are important techniques to improve the properties of a material locally without affecting the bulk. In ceramic components these methods can be used to optimise the fracture toughness, friction and wear but also the thermal and electrical conductivity [1]. In order to predict the results of the modification...conference paper 2006
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Nerinckx, K. (author), Vierendeels, J. (author), Dick, E. (author)A Mach-uniform algorithm is an algorithm with a good convergence rate for any level of the Mach number. In this paper, the severe time step restriction for low speed flows is removed by treating the acoustic and diffusive terms implicitly. After identification of these terms in the conservative set, we end up with a semi-implicit system. The way...conference paper 2006
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Trias, F.X. (author), Soria, M. (author), Oliva, A. (author), Verstappen, R.W.C.P. (author)Since direct numerical simulations (DNS) of natural convection in a differentially heated cavity can not be performed at high Ra-numbers, a dynamically less complex mathematical formulation is sought. In the quest for such a formulation, we consider regularizations (smooth approximations) of the nonlinearity. The regularization method basically...conference paper 2006