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Modeling of heat transfer in buildings (Thesis/Dissertation)

Modeling of heat transfer in buildings (Thesis/Dissertation)

@article{osti_6425796, title = {Modeling of heat transfer in buildings}, author = {Seem, J E}, abstractNote = {Year-long simulations of the hourly (or shorter-time-period) heating and cooling loads for buildings are important for sizing heating, ventilating, and air-conditioning equipment, determining the effect of a design change or retrofit on energy usage, and developing optimal …

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Heat Flow Mantle Convescion and Plate Tectonics

Heat Flow Mantle Convescion and Plate Tectonics

For the past 4.6Ga, this heat has been slowly transferred from the deep interior to the surface as the Earth cools. Owing to the fact that rocks are not good heat conductors, the primary mode of heat transfer is by convection of the hot, plastic asthenosphere. The transfer of heat from the interior to the surface is measured as heat flow.

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Convection in the earths mantle: towards a numerical simulation ...

Convection in the earths mantle: towards a numerical simulation ...

Fukao, Y. 1969 On the radiative heat transfer and the thermal conductivity in the Upper Mantle Bull. Earth. Res. ... Turner, J. S. 1973 Convection in the mantle: a laboratory model with temperature-dependent viscosity. Earth Planet. Sci. Lett. 17, 369.Google Scholar.

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Model Convection Heat Transfer Earths Mantle

Model Convection Heat Transfer Earths Mantle

In the mantle, Nu ≃ 20–30, so that, because of mantle convection, the earth's interior looses heat 20–30 times faster than it would if conduction were the primary heat transfer mechanism. The variation of conductive heat flow over earth's surface and the pattern of plate motions provide information on the planform of mantle convection.

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A simplified mantle convection model for thermal conductivity ...

A simplified mantle convection model for thermal conductivity ...

In this paper, we have employed a simplified two-layer conductivity model and studied the effects of depth-dependent thermal conductivity on convection by using both 2D numerical and 1D quasi-analytical models. First, numerical experiments including the two-layer conductivity models have been performed by using 2D Boussinesq convection models ...

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Anisotropy of thermal diffusivity in the upper mantle Nature

Anisotropy of thermal diffusivity in the upper mantle Nature

Jun 14, 2001 Heat transfer in the mantle is a key process controlling the Earth's dynamics. Upper-mantle mineral phases, especially olivine, have been shown to display highly anisotropic thermal diffusivity at ...

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Mantle Convection - an overview ScienceDirect Topics

Mantle Convection - an overview ScienceDirect Topics

Mantle convection is characterized by mobile plates on its top surface, which have no chance to be recovered in experiments with a rigid top boundary since the latter imposes a zero-fluid velocity on the surface. Moreover, 2-D numerical simulations had shown that the heat transport strongly depends on the mobility of the surface boundary layer (Christensen, 1985), which is controlled …

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What Causes Convection Currents in the Earths Mantle?

What Causes Convection Currents in the Earths Mantle?

Mar 24, 2020 Twitter. Convection currents in Earth’s mantle are caused by the rise of hot material rising towards the crust, becoming cooler and sinking back down. This process occurs repeatedly, causing the currents to constantly flow. The movement of the currents plays a factor in the movement of the mantle. The convection currents also help transfer ...

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Heat Transfer Module - COMSOL Multiphysics

Heat Transfer Module - COMSOL Multiphysics

Modeling Heat Transfer by Radiation 130 Interfaces and Features for Radiation in Transparent Media. . . . . . 132 Interfaces and Features for Radiation in Participating Media. . . . . . 134 Specifying the temperature at a flow inlet 136 Using the Temperature condition . ...

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Empirical Model Rating Method of Heat Removal Efficiency for Vertical ...

Empirical Model Rating Method of Heat Removal Efficiency for Vertical ...

Oct 15, 2008 The heat removal efficiency of a storage tank is effective to evaluate the thermal energy that users can obtain during its heat removal phase. With different types and volumes V t, from 174 L to 1093 L, of six vertical mantle storage tanks widely applied to heat pumps and solar heating systems, the analyses of heat removal patterns were carried ...

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Some aspects concerning modelling the flow and heat transfer ... - DeepDyve

Some aspects concerning modelling the flow and heat transfer ... - DeepDyve

Sep 01, 1999 An experimental and numerical investigation has been undertaken to study the heat transfer process in horizontal mantle heat exchangers used in solar water heaters. A rectangular cavity has been used as a simplified geometry. With the aid of particle image velocimetry (PIV) the flow field in the centre‐plane of the rectangular cavity has been …

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Modeling of the thermal structure of continental lithosphere ...

Modeling of the thermal structure of continental lithosphere ...

The thermal structure of continental lithosphere (the temperature, heat flows, and heat generation in the crust and lithosphere) is reconstructed from geothermal, seismic, and petrologic data. The first step is the determination of the temperature profile from absolute P and S wave velocities (T P, S ). The T P, S profile is then adjusted to a thermophysical model of …

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Mantle Convection -

Mantle Convection -

This means that conductive heat transfer from below is more efficient than at the surface, that temperature increases have little effect on density and that any convection will be sluggish. ... Wen, L. and Anderson, D. L., Layered mantle convection: A model for geoid and topography: Earth Planet. Sci. Lett., 146, 367-377 (1997). Wen, L. and ...

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