Concept

Pumpable ice technology

Related publications (62)

Fast heating and cooling for high temperature chemical microreactors

Albert Renken, Philippe Renaud, Lionel Paratte, Christine Alépée

Many chem. reactions, like the dehydrogenation of gaseous methanol to formaldehyde, require fast heating and cooling of the gases to control precisely the residence time at the reaction temp. (on the order of hundreds of ms) to minimize consecutive reactio ...

Springer2000

Thermodynamics of moving and melting ice slurries

Didier Albert Simon Vuarnoz

The heat transport to a talin/water ice slurry in a cylindrical heat exchanger was determined by theory and experiment. The theory based on perturbation analysis is only valid for small heat transfer rates. Direchlet and Neumann boundary conditions are app ...

International Institute of Refrigeration IIR-IIF2000

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

Wärmepumpe mit Hilfskreislauf zur Kondensatunterkühlung, Phase II : Experimentelle Untersuchung

Daniel Favrat, Pedro Miguel Nunes Pereira de Almeida Reis, Michele Zehnder

A brine/water heat pump with the auxiliary liquid subcooling cycle with a heating capacity of 9 kW at -7/50°C was built and a series of measurement were conduced. The heat pump is designed for the monovalent heating in the retrofit market. For this purpose ...

1999

Pompe à chaleur biétagée à haute performance. Phase 2: Dégivrage par énergie à basse exergie.

Daniel Favrat, Michele Zehnder

The capacities of performance improvements of low and mid-size heat pumps are studied in this project. For the new buildings market, the components of the heat pump match already well the requirements for high performance and monovalent heating. Minor impr ...

1999

Intube Flow Boiling of R-407C and R-407C/Oil Mixtures. Part 2: Plain Tube Results and Predictions

John Richard Thome, Daniel Favrat, Olivier Zürcher

Intube evaporation tests for R-407C and R-407C/oil are reported for a plain copper tube. The tests were run at a nominal inlet pressure of 6.45 bar (93.5 psia) at mass velocities of 100, 200 and 300 kg/m2s (73581, 147162 and 220743 lb/h ft2) over nearly th ...

1998

Heat Transfer and Pressure Drop in the Dryout Region of Intube Evaporation with Refrigerant/Lubricant Mixtures.

John Richard Thome, Daniel Favrat, Olivier Zürcher

A summary of the objectives and conclusions reached in this project are: •A litterature search on post dryout heat transfer for pure refrigerants and for refrigerant-oil mixtures was performed and a comprehensive review written (Chapters 9, 10, and 11); •T ...

1996

Two-Phase Flow Patterns for New Refrigerants Inside Horizontal Tubes.

John Richard Thome, Daniel Favrat

Two-phase flow pattern data were obtained with 12.0 mm bore sight glasses for five refrigerants: R-123, R-134a, R-502, R-402A and R-404A. The existing flow pattern maps of Taitel-Dukler and Hashizume poorly represented the data while the VDI map identified ...

1995

R–502 and Two Near-Azeotropic Alternatives. Part II: Two-Phase Flow Patterns

John Richard Thome, Daniel Favrat

Flow patterns for horizontal intube flow boiling have been studied for the new refrigerants HP80 and HP62 and the conventional refrigerant R-502. The flow pattern observations were compared with several criteria utilized in horizontal flow boiling correlat ...

1995

Two-Phase Flow Patterns during Evaporation of the New Refrigerants in Horizontal Tubes.

John Richard Thome, Daniel Favrat

Flow pattern data for horizontal intube flow boiling are presented for refrigerants R-134a and R-402 (60/2/38). The flow pattern observations were compared with various criteria for determining whether the entire circumference of a horizontal evaporator tu ...

1993

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