Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"heat distribution"”.
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Heat distribution and weld bead geometry in arc welding
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1983.
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Heat distribution by natural convection : a modelling procedure for enclosed spaces.
Thesis. 1979. M.Arch.--Massachusetts Institute of Technology. Dept. of Architecture.
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Modeling Non-Rotational Ocean Circulation and Heat Distribution in Icy Moons
… Their long-term habitability depends on internal heating and efficient vertical heat transport to maintain liquid water beneath the surface. This study models vertical heat diffusion in a non-rotating ocean column to investigate thermal structure and energy balance in such systems. A …
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Theoretical study of heat distribution and surface temperatures generated in oscillating contact
… and accurate solution method to predict the distribution of frictional heat and resulting temperature rise for simple systems with sliding contact. The solution method developed is a variation of the boundary integral equation method (BIEM) in which a moving, full-space Green's function is …
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A contribution to the simplified determination of heat distribution costs in linear and radial district heating networks
District heating networks offer a great opportunity to make a significant contribution to the success of the energy transition, assuming that low-carbon heat supply is achieved. District heating networks have advantages over individual building heat supply systems, such as lower heat generation …
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Design and Analysis of a Parabolic Trough Solar Concentrator
… however a rupture occurred in the copper heat-pipe heat exchanger due to overheating. The internal temperatures of an aluminum heat transfer fin were measured inside an evacuated tube typically used in solar water heater systems to understand the lateral heat distribution and identify …
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Annealing studies of detector materials for uncooled thermal imaging
… Modelling has shown that the PZT could be heated preferentially to induce perovskite formation whilst the ROIC could be kept within its thermal budget, but that the short laser pulse resulted in extreme surface heating of and poor heat distribution in the PZT. Using a bespoke temporal …
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Filling flows induced by a convector in a room
… a continual evolution of how occupied rooms are heated, with inventors competing to design new heating devices. In particular, there is a wide range of convector types, which vary in shape, size, design, material, operating medium and application. With approximately 190 million convectors …
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An electrical network model for computing current distribution in a spirally wound lithium ion cell
… they are used in mainstream vehicles, because of heating issues that may lead to thermal runaway. This work aims at supplementing the existing electrochemical heat distribution model of a spirally wound lithium ion battery with an electrical network that can model the heat losses due to electric …
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A design study of a power and heating plant for the University of Kansas
… the general idea in mind have been made. The heating problem has been carried to the determination of the amount of heat to be supplied. The details of the heat distribution have not been solved. The purpose, in general, has been to show the preliminary methods and calculations necessary in …
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Causes and analysis of failures in in-situ microscopy observation for the characterization of scaling in membrane distillation membranes
… then deposit on high energy surfaces, like metal heat exchangers and hydrophilic reverse osmosis membranes. This is in contrast to the theory that crystals first deposit on the membrane surface to cause fouling. A solution of Na2SO4. and CaCl, was pumped across a membrane at 70°C at 2.6 GPM (9.8 …
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Effects of Variables on a Soaker-Stripper Reactor for Thermal Cracking of Deasphalted Oil
… limited effect of the Raschig rings and enhanced heat distribution due to the steam counter-current flow, which allows better performance at a lower temperature. A parametric study along with the corresponding product distributions for each experiment made possible the use of a kinetic model to …
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Unsteady newtonian and non-newtonian fluid flows in the circular tube in the presence of magnetic field using caputo-fabrizio derivative
… third model is concerned with the temperature distribution and Nusselt number. The fourth model investigates the non-Newtonian second grade fluid velocity affected by the heat distribution and oscillating walls. Last model study the velocity, acceleration and flow rate of third grade …
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Development and Commissioning of a Calorimeter for Testing the Thermal Performance of Luminaires
… allows for the one-dimensional analysis of heat distribution. Using data from the temperature sensors and the air flow rate, the heat released by the luminaires to the ceiling cavity and the room cavity can be calculated respectively. Due to its mobility, the calorimeter can be used in …
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Early Forest Fire Detection Using Texture, Blob Threshold, and Motion Analysis of Principal Components
… Infrared (IR) camera is used to capture the heat distribution within the field of view. The fire core is then isolated using texture analysis techniques: first, range filtering applied on two consecutive IR frames, and then followed by entropy filtering of their absolute difference.</p> …
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Mathematical modelling of gas flow networks in pellet induratlon systems
… should evaluate pressure, flow and temperature distributions of process gas in pellet induration system networks. Pellet induration systems are complex industrial systems composed of heterogenous components. The magnitude of gas through leaks i.e. the air entering or leaving the system from the …
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Integrated network-based thermofluid model of a once-through boiler at full- and part-load
… of unburned carbon and excess air. The radiation heat transfer in the furnace is modelled using the projected area approach (Gurvich/Blokh model) together with a high ash loading model. The gas-to-steam tube bank heat exchangers are discretised pass-by-pass, and the complex heat transfer phenomena …
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Influence of process parameters and manufacturing defects on the properties of thermoplastic composite pipes.
… consolidation process, the number of layers and heat distribution influence bonding and void formation. Therefore, higher compaction force improves bonding between layers and reduces void content. However, increased lay-up speed can reduce the overall bonding quality, even with higher force. This …
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Návrh temperovaného stolu pro FDM 3D tiskárnu s využitím simulace MKP
Diplomová práce se zabývá návrhem vyhřívaného stolu pro FDM 3D tiskárnu pomocí metody konečných prvků. Je stručně popsána historie RepRap tiskáren, konstrukce a části, ze kterých se skládá. Jsou diskutovány dva způsoby vyhřívání, vyhřívání pomocí PCB desky a pomocí výkonových rezistorů na které se …
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