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Double-diffusive convection in Lake Nyos, Cameroon

Publications associées (37)

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The current industrial need for compact high heat density cooling devices has conveyed an increasing interest on convective boiling in micro-channels. Although there is general agreement that these systems may be able to dissipate potentially very high hea ...

EPFL2008

INFLUENCE OF THE SATURATION TEMPERATURE ON THE HEAT TRANSFER COEFFICIENT FOR FLOW BOILING INSIDE HORIZONTAL SMOOTH TUBES

John Richard Thome, Ricardo Lima

This article presents experimental results of heat transfer from two different studies [1, 2] for horizontal flow boiling inside smooth copper tubes with different refrigerants. The main goal of this study was to verify the influence of the saturation temp ...

2008

Variance Methods for Sensible Surface Heat Flux Determination at the Earth Surface

Heat flux measurements are very important in the study of the atmospheric boundary layer (ABL) dynamics; heat flux controls ABL stability and is therefore crucial to various topics such as air quality and hydrometeorology. Accurate heat flux measurements c ...

2006

Evaporation of Refrigerants in a Horizontal tube: An Improved Flow Pattern Dependent Heat Transfer Model Compared to Ammonia Data

John Richard Thome, Daniel Favrat, Olivier Zürcher

Few experimental test data are available for evaporation of ammonia inside tubes and numerous new data have been measured and presented here. An improved approach to the prediction of flow boiling heat transfer in horizontal tubes has been proposed through ...

2002

Contribution to the heat transfer analysis of natural and substitute refrigerants evaporated in a horizontal tube

Olivier Zürcher

The substitution of CFC refrigerants in refrigeration systems, heat pumps and organic Rankine cycles, requests a good knowledge of the heat transfer and pressure drop properties of substitute fluids. A contribution to this international effort is proposed ...

EPFL2000

Here we report on two field experiments from Lake Alpnach (surface area: 4.8 km(2); maximum depth: 34 m) that were designed to study the process of boundary mixing and to estimate its efficiency, the ratio between the turbulent kinetic energy converted int ...

Amer Geophysical Union2000

HEAT TRANSFER OF ICE SLURRIES IN PIPES

Didier Albert Simon Vuarnoz

Some basic ideas of the heat transfer of ice slurries are discussed. The equations des-cribing a flow of a Bingham fluid through a tube with a heat flux over the boundary are presented. The theory shows that familiar Relations known in the field of heat ex ...

International Institute of Refrigeration IIR-IIF1999