Concept

Cycle frigorifique

Publications associées (184)

Multi-objective optimization and exergoeconomic analysis of a continuous solar-driven system with PCM for power, cooling and freshwater production

In this article, three different modes of a novel integrated system would be evaluated by the application of high temperature Thermal Energy Storage (TES) to produce electricity, cooling, and freshwater. Freshwater is produced using the reverse osmosis (RO ...

PERGAMON-ELSEVIER SCIENCE LTD2020

Influencing factors on flow boiling of carbon dioxide in enhanced tubes and comparison with correlations

John Richard Thome

Carbon dioxide two-phase flow characteristics are different from those of conventional refrigerants, due to the CO2 particular thermodynamic and transport properties obtained by working at high reduced pressures. Moreover, the use of peculiar heat transfer ...

IOP PUBLISHING LTD2020

Scale limitations of gas bearing supported turbocompressors for vapor compression cycles

Jürg Alexander Schiffmann

An analysis of single-stage centrifugal compressors supported on dynamic, gas lubricated bearings for driving vapor compression cycles suggests that the maximum feasible compressor power is limited, primarily by the bearing load capacity, in the range from ...

2020

Water-energy nexus approach to compare performance of evaporative and vapor-compression cooling systems

Dolaana Khovalyg, Amirreza Heidari, Nasim Soori

Evaporative cooling systems consume high water, but low electricity for their operation. On the other hand, vapor compression systems consume no water, but high electricity. Water and energy systems are interconnected at different levels. Therefore, water ...

2019

High temperature heat pumps – Theoretical study on low GWP HFO and HCFO refrigerants

Jürg Alexander Schiffmann

High temperature heat pumps with heat sink temperatures of 100 to 160 °C have great application potential in the food, paper, and chemical industries for heat recovery and process heat generation in drying, sterilization, and evaporation processes. The pre ...

2019

Optimised Heat Pump Management for Increasing Photovoltaic Penetration into the Electricity Grid

Christophe Ballif, Lionel Benjamin Bloch, Jordan Holweger, Cristian Sanchez Perez

Advanced control of heat pumps with thermal storage and photovoltaics has recently been promoted as a promising solution to help decarbonise the residential sector. Heat pumps and thermal storage offer a valuable flexibilisation mean to integrate stochasti ...

2019

Pcm-based heat exchanger and uses thereof

Véronique Michaud, Sophia Haussener, Matthieu Gani, Lucas Fuentes Valenzuela, Marc Roulin

A PCM-based heat exchanger is disclosed, said phase change material (PCM)-based heat exchanger comprising: a) a case having insulated walls comprising an inlet and an outlet; and b) a plurality of modules comprising a support structure containing a phase c ...

2019

Regionalization in energy system planning: Application in Gros-de-Vaud, canton de Vaud

This master project takes part in the context of the 2050 Swiss energetic strategy. In order to reduce impacts caused by the climate change, energetic systems need to be planed and have to decrease at maximum its carbon foot print. Aiming to reach this tar ...

2019

Fifth generation district energy systems for low carbon cities

Raluca-Ancuta Suciu

The focus and challenge for energy engineering in the context of rapid climate change is summarised by the Europe 20-20-20 targets, committing to a reduction in energy consumption of 20%. The most logical approach to achieve these goals is to target the mo ...

EPFL2019

Incorporating Location Aspects in Process Integration Methodology

François Maréchal, Ivan Daniel Kantor, Hür Ebuzer Bütün

The large potential for waste resource and heat recovery in industry has been motivating research toward increasing efficiency. Process integration methods have proven to be effective tools in improving industrial sites while decreasing their resource and ...

2019

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