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Panda, Subhranshu (author)Passive measures to tackle increasing energy demands of modern buildings are aimed to generate energy from the roof or the ground beneath and by improving insulation to isolate indoors and outdoors. The author targets the opaque facade sections of a building to develop an active panel to exchange solar thermal energy with his project THERM...master thesis 2019
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Ibrahim, Ahmed (author)Heat exchangers of any kind are exposed to thermal loading which have the potential to cause severe stresses on the equipment. The magnitude of these loads are far more pronounced when temperature differences occur. These may be during plant start-up or shut-down due to the transient nature of the temperature profiles or even imbalances that...master thesis 2019
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Leichsenring, Maaike (author)Ocean Thermal Energy Conversion (OTEC) uses the temperature difference between the surface and deep layers to generate electricity. The temperatures in the ocean hardly vary between day and night or between the seasons, which ensures a very constant energy production with OTEC. In order for OTEC to compete with the current forms of energy...master thesis 2019
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Wang, M. (author)Improving efficiencies of thermal energy conversion systems is an important way to slow down global warming and mitigate climate change. Vapor absorption heat pump and refrigeration cycles are highly efficient ways of heating and cooling. These thermally activated systems also provide opportunities for the integration with a wide spectrum of low...doctoral thesis 2019
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Wang, M. (author), He, Lijuan (author), Infante Ferreira, C.A. (author)Unfavorable transport properties have always been pointed out as the key factors that hinder the application of ammonia/ionic liquids (NH <sub>3</sub> /ILs) in absorption cycles, while heat and mass transfer of these new fluids in components have been rarely reported. In this study, a corrugated plate heat exchanger is selected as the...journal article 2019
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Toa, X. (author), Infante Ferreira, C.A. (author)The corrugation channels of plate heat exchangers enhance the heat transfer and complicate the prediction of heat transfer coefficients and frictional pressure drop. This paper reviews the heat transfer and frictional pressure drop correlations for condensation in plate heat exchangers, and classifies the correlations into basic forms. An...review 2019
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van den Hoek, Leonard (author)In the quest for renewable energy for tropical islands, Ocean Thermal Energy Conversion (OTEC) has revealed itself as one of the most promising technologies. OTEC stands or falls with the performance of the condenser. Plate Heat Exchangers (PHEs) have proven their selves as effective heat transfer<br/>equipment for low enthalpy cycles such as...master thesis 2018
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Panteli, Nefeli (author)In a Borehole Thermal Energy Storage (BTES) system, heat is extracted from or injected to the subsurface, taking advantage of the relatively constant temperatures of the underground. Both thermal conduction and advection can influence the performance of BTES systems, but thermal advection is often neglected in the design process. However, in...master thesis 2018
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Regueiro Cueva, Juan (author)Range extended electric vehicles (REEV) are being considered as a possible solution for the electrification of passenger vehicles. The application of a recuperated gas turbine (GT) for REEVs shows potential in terms of power-to-weight ratio, emissions and cost. The recuperator plays a major role in achieving target efficiency, while being a main...master thesis 2018
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Dahlgren, Elias (author)In the search for new forms of renewable energy production, an interesting option is to make use of the energy stored in the ocean in tropical areas. The sun heats up the surface water in these areas to a point it is feasible to generate electricity, using the temperature difference between the hot surface water and the cold ocean water at...master thesis 2018
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Koppes, Fabian (author), van der Veer, Machiel (author), Veldt, Timo (author), Marif, Kizjè (author), Smits, Roy (author)Due to climate change and growing cities, water scarcity is becoming one of the futures biggest problems. On top of that, the population and prosperity of cities around the equator are growing fast. Meaning that the need for electricity, cooling and drinking water will grow fast in the following decades. ROTEC’s vision is that these growing...student report 2018
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Adriaanse, Michiel (author), de Jel, Jordy (author), Lageweg, Sjoerd (author), Wijnands, Jasper (author)Bluerise has developed a system that uses cold seawater to cool down a fresh water loop. This loop is used for fresh water production. The goal of this study is to improve the overall heat transfer coefficient of the working medium in this system by at least 5%, which will also reduce its size. The overall heat transfer can be improved by adding...bachelor thesis 2018
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Two-phase vertical downward flow in plate heat exchangers: Flow patterns and condensation mechanismsToa, X. (author), Nuijten, Menno P. (author), Infante Ferreira, C.A. (author)This study presents a literature review of work related to the two-phase flow patterns of vertical downward flow in plate heat exchangers with corrugated chevron plates. An understanding of these flow patterns is crucial for developing accurate models of plate heat exchangers functioning as condensers or absorbers. Flow pattern maps of the...journal article 2018
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Jahn, Patrick (author)Aviation has to reduce its emission. In the past the improvements of aero engine technology have been achieved by higher turbine inlet temperatures, higher overall pressure ratios, higher bypass ratios and more efficient components. However, these methods hold only limited potential for further improvements. Therefore, research into alternative...master thesis 2017
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Caballero Hernandez, Enrique (author)Nowadays more attention to environmental-friendly sources of energy has been given, aiming to slow down and counteract the damage to the ecosystem product of the abuse of fossil fuels. Different technologies on energy production, solar, wind, tidal, geothermic, etc., have been researched with the additional challenge of how to store it.<br/>From...master thesis 2017
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Mohanachandran, Hari (author)An active fluid heat exchanger can be controlled effectively using Peltier elements to condition the temperature of the fluid flowing through the heat exchanger. The thermal resistance of the heat exchanger can be reduced to increase the speed of controlling the fluid's temperature. Topology optimization is used in this study to find the...master thesis 2017
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Shi, L. (author)The energy consumption in the industry field is considerable. Saving energy has great potential in many industrial processes. For example, heat recovery from the spent cooling water can be achieved by applying heat pump technology, and the recovered heat can be used for district heating. Previous study indicates that the compression-resorption...master thesis 2017
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Shi, Liang (author), Gudjonsdottir, V. (author), Infante Ferreira, C.A. (author), Rexwinkel, Glenn (author), Kiss, Anton A. (author)Compression resorption heat pumps (CRHP) are a promising option to upgrade waste heat from industry. Alternative working fluids can further improve the efficiency of CRHP. The ternary mixture NH3-CO2-H2O has been identified as a promising working fluid for CRHP and has the potential to further enhance the coefficient of performance (COP) of the...conference paper 2017
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de Witte, D. (author), de Klijn-Chevalerias, M.L. (author), Loonen, R.C.G.M. (author), Hensen, J.L.M. (author), Knaack, U. (author), Zimmermann, G. (author)This paper reports on the research-driven design process of an innovative thermal mass concept: Convective Concrete. The goal is to improve building energy efficiency and comfort levels by addressing some of the shortcomings of conventional building slabs with high thermal storage capacity. Such heavyweight constructions tend to have a slow...journal article 2017
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Aarts, S.P. (author)Waste heat recovery is essential to reduce energy consumption in industry. A heat pump can be used to upgrade waste heat to a temperature level that is suitable for process heat. This study concerns a compression-resorption heat pump. The goal is to optimise the heat pump energetically, while keeping the investment attractive. Entropy production...master thesis 2016