Searched for: subject%3A%22heat%255C+pipe%22
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Draškić, Marko (author)
Large quantities of heat stored in geothermal aquifers can be of interest to satisfy above-ground heating demands. With the use of heatpipes, placed into the aquifers, heat may be passively extracted. Vertical two-phase thermosiphons are considered in this study. As a result of a local increase in the saturation temperature in liquid pools, heat...
master thesis 2020
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Verbeek, Frederik (author)
The production of steel is an energy intensive process, using 20GJ/tonne of steel. The energy use needs to be declined by 10% in 2030 in order to be on track of the Sustainable Development Scenario(SDS). About 1GJ/tonne is required today by the annealing process, a heat treatment in which the steel strip is heated to a temperature of about 600...
master thesis 2020
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Çelik, M. (author)
Steel is an indispensable material for the sustainable maintenance and progress of modern civilization. Its versatility in terms of mechanical and thermal characteristics, corrosion resistance, raw material availability, energy consumption and recyclability provides a clear advantage in a fast-changing technological landscape. In order to adapt...
doctoral thesis 2020
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Hogendoorn, Paul-Jan (author)
Heat pipes are typically used in the semiconductor industry. This means that the scale of these heat pipes is typically in the order of centimeters. Zijm suggests that heat pipes could be used for geothermal applications, but literature is lacking. To further investigate the geothermal application of heat pipes, a large scale heat pipe is built....
master thesis 2019
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van Leeuwen, Stefan (author)
The heat pipe assisted annealing project is a project in which Tata Steel, TU Delft and Drever International work together to develop a continuous annealing line with heat pipes. In an annealing line cold rolled steel is heated to 973 K and cooled down again to change the properties of the steel. In the heat pipe assisted annealing project the...
master thesis 2018
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Çelik, M. (author), Paulussen, Geert (author), van Erp, Dennis (author), de Jong, W. (author), Boersma, B.J. (author)
Rotating wickless and stationary capillary cylindrical heat pipes are widely used heat transfer devices. Transient behavior of such heat pipes has been investigated numerically with computational fluid dynamics and lumped parameter models. In this paper, the advantages of both methods are combined into a novel engineering model that is low in...
journal article 2018
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Çelik, M. (author), Devendran, Kathikeyan (author), Paulussen, Geert (author), Pronk, Pepijn (author), Frinking, Ferry (author), de Jong, W. (author), Boersma, B.J. (author)
A new concept for energy efficient annealing of steel strip comprises of multiple rotating heat pipes. Each heat pipe extracts heat from the cooling strip which is reused to increase the temperature of the heating strip. In this context, the heat transfer between the steel strip and the rotating heat pipe is investigated. When the strip is...
journal article 2018
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Patki, M. (author)
A conventional annealing line uses a gas fired or electrical heating to heat and gas jets to cool the steel strip. The energy supplied during heating is lost in the cooling section. This energy has a lot of potential which can be recovered and used for the heating of the cold steel strip. Tata Steel, TU Delft and Drever International are...
master thesis 2017
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Devendran, K. (author)
master thesis 2016
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Meltzer, B.O.P. (author)
The heat pipe assisted annealing project is a collaboration between TU Delft, Tata Steel and Drever International. It is aimed at developing a continuous annealing line where the implementation of rotating heat pipes leads to a 70% reduction in energy consumption by reusing heat recovered at the cooling step. Rotating heat pipes are closed...
master thesis 2016
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Brouwer, H.S.B. (author)
The CubeSat platform has long since its introduction surpassed its original intend of being an educational and technology demonstration platform only. The recognition and acknowledgement of its potential has led to an everlasting hunger for more performance, which translates directly into a demand for more power. The power density of CubeSats is...
master thesis 2016
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Chen, Xianping (author), Ye, H. (author), Fan, Xuejun (author), Ren, Tianling (author), Zhang, Kouchi (author)
Heat pipes (HPs) have received considerable attention in recent decades, especially in the field of cooling electronics, which requires the removal of added heat from an area of limited volume to the environment. Small HPs are widely used in electronic applications, which are normally limited by the compact structure and dimensions of the...
journal article 2016
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Ye, H. (author)
Solid-State Lighting (SSL), powered by Light-Emitting Diodes (LEDs), is an energy-efficient technology for lighting systems. In contrast to incandescent lights which obtain high efficiency at high temperatures, the highest efficiency of LEDs is reached at low temperatures. The thermal management in LED product is then a key design parameter as...
doctoral thesis 2014
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Delil, A.A.M. (author)
Different concepts for a moveable thermal joint are described and discussed with respect to the applicability in a dedicated deployable or steerable heat pipe radiator system to handle the waste heat of the NiH batteries of the Polar Platform. Concepts which are identified as possible candidates for near-term deployable radiator development are:...
report 1986
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Delil, A.A.M. (author)
Two-phase flow heat transport systems (thermal busses) for the Columbus Space Platform and the Space Station are expected to incorporate systems to control the liquid flow rates into the evaporative cold plates. Such a control system consists of a sensor that monitors the cold plate (performance), a control algorithm and an actuator i.e. a valve...
report 1986
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Delil, A.A.M. (author)
A uniaxial model for the transient performance of gas-loaded variable conductance heat pipes is being developed, partly under contract with the Netherlands Agency for Aerospace Programs NIVR. The model has to be easily implementable in existing spacecraft thermal analyzer computer programs. So far, a steady-state version of the model is...
report 1984
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Delil, A.A.M. (author), Daniels, H.A.M. (author)
report 1983
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van den Assem, D. (author), Bunk, P.B. (author)
Preliminary experiments have been performed with a laboratory model of an electro-osmotic heat pipe filled with ethanol. With dismounted electro-osmotic pump, the heat transport through the pipe and the temperature distribution along the pipe wall have been measured. The measurements have been performed as a function of the temperature...
report 1983
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van der Vooren, J. (author), Delil, A.A.M. (author), Sanderse, A. (author)
A new uniaxial model for a gas loaded variable conductance heat pipe (VCHP) is developed. This model takes into account the diffusion at the vapour-gas interface as well as the inertial effects of the moving vapour. Only steady-state conditions are considered. The generally accepted Edwards /Marcus model will be shown to be a first order...
report 1980
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van der Vooren, J. (author), Sanderse, A. (author)
A uniaxial flat front--"theory is presented for a gas loaded variable conductance heat pipe. The theory takes into account the inertial effects of the moving vapour, which can grow large under certain circumstances, but neglects the axial heat conduction of the wall and wick. A limited number of numerical examples indicates excellent agreement...
report 1980
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