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Instability of flow boiling in paralell microchannels

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On the prediction of heat transfer in micro-scale flow boiling

John Richard Thome, Wei Zhang, Lorenzo Consolini

Xu et al. have recently published a set of results for boiling heat transfer measurements in a multi- channel micro- scale evaporator for flow boiling of acetone in triangular cross- section channels ( hydraulic diameter of 155.4 mm). In the present collab ...

2007

Two-Phase Flow and Heat Transfer across Horizontal Tube Bundles – A Review

John Richard Thome

This paper presents a state-of-the-art review of two-phase flow and flow boiling across horizontal tube bundles. The review covers studies related to the dynamic aspects of two-phase flow on the shell side of staggered and in-line tube bundles for upward, ...

Taylor & Francis2007

Heat Transfer in Confined Forced-Flow Boiling

John Richard Thome, Wei Zhang, Lorenzo Consolini

Remarkably different behaviors are found when comparing micro-scale flow boiling heat transfer data by distinct authors, even under similar experimental conditions. Such differences are almost certainly related to the complexity of confined forced-flow boi ...

2007

Experimental two-phase fluid flow in microchannels

Rémi Revellin

Micro or mini heat spreaders are used in the interest of providing higher cooling capability for microtechnologies. Heat spreaders using micro or mini channels are not yet well studied, for this the fundamentals of two-phase heat transfer in microchannels ...

EPFL2005

Large Eddy Simulation of turbulent flow in heated curved ducts: influence of the Reynolds number

Large-Eddy Simulations (LES) of the turbulent compressible ow within heated curved ducts of square cross section are presented. The aim here is to predict the three- dimensional structures which develop inside cooling channels of rocket engines and study t ...

2005

Development of reaction calorimetry applied to supercritical CO2 and methanol-CO2 critical mixture

Frédéric Lavanchy

The combination of reaction calorimetry and supercritical fluids as reactants and/or solvent holds great potential for the optimization of chemical processes using high pressure near-critical and/or supercritical mixtures. The very specific properties of s ...

EPFL2005

Heat transfer assembly

John Richard Thome

A heat transfer assembly for transferring heat from a heat generating device (5) to a circulating fluid, said heat transfer assembly comprising - an evaporator device (3) having at least one microchannel (1) formed therein, in thermally conductive contact ...

2005

Chapter 3: Fluid Dynamics

Didier Albert Simon Vuarnoz

This handbook is the fruit of work performed by the IIR Working Party on Ice Slurries and contains everything a reader could possibly want to know about ice slurries. Edited by Michael Kauffeld, Masahiro Kawaji and Peter W. Egolf, around 50 international e ...

International Institute of Refrigeration IIR-IIF2005

Integrated LTCC micro-fluidic modules - an SMT flow sensor

Peter Ryser, Thomas Maeder, Yannick Sébastien Fournier, Raphael Willigens

This paper presents a thermal flow sensor based on the calorimetric principle realized by using low temperature co-fired ceramic (LTCC) technology, where the tapes and flow channel have been structured by laser machining. A standard configuration of a calo ...

2005

Efficient air-water heat pumps for high temperature lift residential heating, including oil migration aspects

Michele Zehnder

This thesis presents a system approach with the aim to develop improved concepts for small capacity, high temperature lift air-water heat pumps. These are intended to replace fuel fired heating systems in the residential sector, which leads to a major redu ...

EPFL2004