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 55 for “"Heat Balance"”.
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Global heat balance without and with solar radiation management
"A linearized global heat balance model which is driven by five classes of influence on long wavelength radiation and four classes of influence on short wavelength radiation is calibrated against historical estimates of global average temperature. Additional influences are variability of solar …
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Global heat balance model and probability distributions for atmospheric response
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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The sea surface heat balance in the Benguela upwelling region
The surface heat balance of the Benguela upwelling area on the west coast of southern Africa is analysed. Measurements of the components of the heat balance were made in the St Helena Bay area from 14-21 October 1986. Additional long-term data was obtained from Alexander Bay and Cape Town. An …
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Sensitivity analysis of the secondary heat balance at Koeberg Nuclear Power Station
… with the most important being the Secondary Heat Balance (SHB) test which has been programmed within the central Koeberg computer and data processing system (KIT). Improved accuracy in the SHB will result in a more accurate representation of the thermal power generated in the core. The input …
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The development and present status of the theory of the heat balance in the atmosphere
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Aeronautical Engineering, 1934.
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Emissivity of patterned silicon wafers in rapid thermal processing
… By using the Stefan-Boltzmann T^4-law, a heat balance equation describing the incoming and outgoing heat can be derived. This heat balance equation can be used to calculate the spatial temperature differences due to different emissivities of the various thin film layers of patterned …
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Wind-driven circulation on a shallow, stratified shelf
… atmospheric forcing characteristics and the heat balance of the inner shelf, and are used as motivation for a numerical study of inner shelf circulation during upwelling and downwelling. Variation in meteorological forcing on the North Carolina Inner shelf is shown to be dominated by synoptic …
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Arabian Sea mixed layer deepening during the monsoon : observations and dynamics
… flux, driven by large radiative and latent heat losses at the sea surface. Convective entrainment is the primary local mechanism driving the observed mixed layer cooling and deepening, although horizontal advection of thermocline depth variations affect the depth which the mixed layer …
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Diagnostic studies of ECHAM GCMs
… It is shown that the simulation of annual mean heat balance at ocean surface has been greatly improved in ECHAM4 T106 with respect to the GEBA observations. While the annual mean state is important to the global climate system's heat and water balance, the distribution of global heat and water …
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Mathematical modelling of unsteady contact melting
The work in this thesis deals with the heat transfer and fluid flow problem encountered in the analysis of an unsteady contact melting process. Chapters 2 and 3 deal with only the heat transfer problem without fluid flow. In Chapter 2 the pre-melting problem is treated. The focus is to obtain the …
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Effects of variable wind stress on ocean heat content
Ocean heat content change (ocean heat uptake) has an important role in variability of the Earth's heat balance. The understanding of which methods and physical processes control ocean heat uptake needs improvement in order to better understand variability in the Earth's heat balance, improve the …
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An investigation of nugget formation and simulation in resistance spot welding
… The mean temperature is obtained from a heat balance model of the workpiece. The heat balance model is advantageous to the finite difference simulation because its calculation time is short enough to be carried out during the welding process. A comparison of the maximum mean temperature …
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The temperature distribution on a spherical shell in the presence of a primary radiative source and a reflecting and radiating infinite plane
… assumed to radiate diffusely as well as reflect heat energy. Convective heat transfer as well as radial conduction in the shell is neglected. The non-linear differential equation obtained from a heat balance made on a volume element of the shell is approximated by a linearized equation. The …
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Development of an integrated building energy simulation with optimal central plant control
… building energy analysis programs is to assist heating, ventilation, and air conditioning (HVAC) engineers in the design process and to help researchers develop more effective and efficient methods of controlling a building's environment. One such program is BLAST (Building Loads Analysis and …
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Mapping comfort : an analysis method for understanding diversity in the thermal environment
… spatial dimensions, as well as over time. Both heat balance and adaptive comfort indices have been incorporated into the methodology. An accompanying software program, called cMap, has been developed to illustrate the ways that this methodology can be used with existing energy analysis software …
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Chemical Kinetics and Heat Transfer in Polyurethane Foam and Resin Composites
… the physics, the chemical kinetics, and the heat-transfer properties of the materials.</p> <p>For this work, the chemical kinetics of the polyurethane foam and the fiberglass-reinforced resin is investigated individually. An adiabatic method, which is commonly used by many investigators, is …
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Identification of Crystal Growth dynamics in Czochralski Systems
… function is performed. This is based on the heat balance equation at the solid-liquid interface. Due to lack of data on gallium phosphide, the error bounds of the prediction are wide but it is shown that they may be reduced by using the measured transfer function. The work has application to …
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Heat transfer from in-line and perpendicular arrangements of cylinders in steady and pulsating crossflow
… the effect of organized flow pulsations on mean heat transfer from a single cylinder, in-line arrangements and perpendicular arrangements of cylinders. Pulsation frequencies of up to twice the natural vortex shedding frequency and zero to peak. amplitudes as high as 36 percent were used. …
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Enhanced weather modelling for dynamic line rating
… model of the conductors (i.e. a steady-state heat balance equation).;For a complete OHL, possible weather predictions at each span are inferred from random weather samples at stations by using suitable spatial interpolation models; the steady-state DLR forecast of the OHL is then identified as …
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Improving the Fanger model's thermal comfort predictions for naturally ventilated spaces
… and international standards and is based on the heat balance of the human body with the environment. This investigation focuses on re-specifying the parameters in Fanger's model, the majority of which are empirically-derived coefficients, to improve its thermal comfort predictions for naturally …
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