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Publications associées (10)
High resolution local heat transfer and pressure drop infrared measurements of two-phase flow of R245fa within a compact plate heat exchanger
John Richard Thome, Raffaele Luca Amalfi
An experimental study is presented to characterize two-phase thermal and hydraulic performance of a prototype corrugated plate heat exchanger with small pressing depth. In particular, upward flow boiling of low pressure refrigerant R245fa was investigated ...
Pergamon-Elsevier Science Ltd2016Intermittent dewetting and dryout of annular flows
John Richard Thome, Navid Borhani
Flow visualisation of saturated flow boiling of refrigerant R245fa in a silicon parallel multi-microchannel evaporator, at low mass flux and moderate uniform heat flux, has been carried out with a high-speed digital camera. Using the time-strip technique t ...
Pergamon-Elsevier Science Ltd2014Two-phase flow operational maps for multi-microchannel evaporators
John Richard Thome, Navid Borhani, Sylwia Szczukiewicz
The current paper presents new operational maps for several different multi-microchannel evaporators, with and without any inlet restrictions (micro-orifices), for the two-phase flow of refrigerants R245fa, R236fa, and R1234ze(E). The test fluids flowed in ...
Elsevier2013Novel structured adsorber and oxidation catalysts for the removal of VOCs in low concentration
One possibility for the removal of volatile organic compounds (VOCs) is catalytic oxidation. For the removal of VOCs in low concentration (≲ 3000 ppmv for propane) it is not possible to sustain the required oxidation temperature over the catalyst wit ...
EPFL2007Evaporation 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 ...
2002Pompe à chaleur bi-étagée à haute performance.
Daniel Favrat, Michele Zehnder
The objectives of the present work is to theoretically and experimentally demonstrate the advantages of a two-stage cycle equipped with an economizer and single variable speed compressor for heat pumps using air as cold source. Furthermore, an efficient de ...
1997