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.
Results
Showing 1 to 20 of 200 for “"Heat source"”.
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Heat source in a compressible fluid
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautical Engineering, 1949.
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A heating process algorithm for metal forming by a moving heat source
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1997, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Heat source transfer functions and their application to low temperature radiant heating systems
Radiant heating systems have been identified by segments of the HVAC industry as technology which can potentially reduce the energy consumption of buildings. As a result of higher mean radiant temperatures within radiantly heating structures, it has been hypothesized that these systems can provide …
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Aerodynamic and thermal analysis of a heat source at the underside of a passenger vehicle
… phenomena using a 2005 Chevrolet Aveo5 with a heat source affixed to it to create a baseline. The results show that irrespective of the yaw angle used, only temperatures in the vicinity of the heat source increased. The rear suspension also deflected the airflow preventing heat transfer. The …
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Thermal modeling for calculation of formation temperatures for deep water wells with chemical heat source
… depleted zones is becoming more common as the resources are exhausted and the fields mature. To be able to access deeper sections of the reservoirs, it is essential to drill through depleted zones effectively. This need brings around the challenges including severe lost circulation and poor zonal …
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Development of a hybrid heat source radiant system using an embedded concentric tube heat exchanger
… space thermal environment control system using a heated or cooled surface of building components such as floor, wall, and ceiling. The systems have been reported to have advantages in improving occupants’ thermal comfort and reducing heating and cooling energy consumption. Although the system has …
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Experimental Investigation of the Heat Source Orientation on the Transient Flow and Thermal Behaviour of Phase Change Material During Phase Transition
… work, both important in the field of latent heat thermal energy storage, are to investigate the influence of the flow behavior within liquid PCM on the melting and heat transfer processes, and the impact of heat source orientation on the underlying melting and heat transfer processes. A …
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Numerical study of heat source/sink effects on dissipative magnetic nanofluit flow from a non-linear inclined stretching and shirinking sheet
… and shrinking sheet in the presence of heat source/sink and vicious dissipation. The governing coupled nonlinear momentum and thermal boundary layer equation are transform into a system of ordinary differential equations via similarity transformation with appropriate boundary condition. …
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Unsteady hydromagnetic chemically reacting mixed convection MHD flow over a permeable stretching sheet embedded in a porous medium with thermal radiation and heat source/sink
… in a porous medium with thermal radiation and heat source/sink is investigated numerically. The original partial di erential equations are converted into ordinary di erential equations by using similarity transformation. The governing non-linear partial di erential equations of Momentum, …
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The observation of peak temperatures as a method of examining heat flow and metallurgical transformations due to a moving heat source in a metal plate
Thesis: B.S., Massachusetts Institute of Technology, Department of Metallurgy, 1958
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Design of organic Rankine cycles for conversion of waste heat in a polygeneration plant
… Rankine cycles for the conversion of low grade heat sources, where steam cycles are known to be less efficient and more expensive. This work examines organic Rankine cycles for use in a polygeneration plant that converts coal feedstock into hydrocarbon products and electricity. Since a Fischer …
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Modélisation, simulation et contrôle d’un cycle de Rankine organique en régime dynamique.
… of mechanical energy form low temperature heat source. Additionally, they are particularly suitable to small scale units. This work introduces the use of ORC to recover a variable flow rate and temperature heat source. As heat source’s characteristics are variables, it is judicious to be …
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Fire Hazard of the Contemporary American Home
… of residential fires. The Item First Ignited and Heat Source for fires are analyzed in a risk model. Structural Member is the Item First Ignited that contributes the greatest amount of risk in one- and two- family houses. The Heat Source for Structural Member is concentrated among three main …
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Heat Transfer and Consolidation Modeling of Fiber Tow in Fiber Placement
New heating techniques are required to better control heat transfer between heating tools and a composite towpreg in the automated fiber placement process. This dissertation suggests new heating techniques with liquid and rigid contact heat sources, and compares them with a widely used gas heat …
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The scattering of high-frequency acoustic phonons in silicon and gallium arsenide
… phonon imaging technique. In this technique, a heat source is provided by a focused laser beam which is raster scanned across the surface of the sample which is immersed in liquid helium. After they propagate across the sample, the acoustic phonons produced by the heat source are detected by a …
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Optimisation of chaotic thermoacoustics
In an acoustic cavity with a heat source, such as a flame in a gas turbine, the thermal energy of the heat source can be converted into acoustic energy, which may generate loud oscillations. If uncontrolled, these acoustic oscillations, also known as thermoacoustic instabilities, can cause …
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Modeling of shell forming by line heating
Metal forming by a moving heat source is an efficient and economical method for forming flat metal plates into doubly curved shapes. This thesis proposes an FEM model for three dimensional thermo-mechanical simulation of the process of shell forming by line heating. Since the heat flux is focused …
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Thermal transient computation for a CTR blanket following a major plasma disruption
… both the incident neutron and secondary gamma heating in calculating the volumetric heat source rate. With these modifications, the average value of the volumetric heat source rate was calculated to be 0.05 MW/m³ ~ 0.5 MW /m³. The disruption times used in this analysis were assumed to be 24 ms …
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Experimental study of heat transfer and fluid flow in unsaturated porous media
… in a Lexan rectangular box. A cylindrical heat source was located horizontally in the middle region of the bed and the bed was heated to steady state conditions. Water was then introduced uniformly through square nozzles located over the fill material for short periods of time. The box was …
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