Concept

Réfrigérateur à absorption de gaz

Publications associées (97)

A Rapid Response Thin-Film Plasmonic-Thermoelectric Light Detector

Light detection and quantification is fundamental to the functioning of a broad palette of technologies. While expensive avalanche photodiodes and superconducting bolometers are examples of detectors achieving single-photon sensitivity and time resolutions ...

2016

Modeling and Optimization of an Industrial Ammonia Synthesis Unit: An Exergy Approach

Daniel Alexander Florez Orrego

An exergy modeling and optimization of an industrial ammonia unit based on steam methane reforming (SMR) process is presented. The base-case unit produces about 1000 t NH3/day [1], as well as power and steam, with no auxiliary exergy use. Some critical ope ...

Faculty of Mechanical Engineering, University of Ljubljana2016

Exergy Assessment of Single and Dual Pressure Industrial Ammonia Synthesis Units

Daniel Alexander Florez Orrego

In exothermic, equilibrium-limited processes such as ammonia synthesis, higher per-pass conversions are often achieved by withdrawing the enthalpy of reaction before the conversion has been completed. However, although inter-bed cooling may help controllin ...

Silesian University of Technology2016

Overview of Deployment of Magnetic Refrigeration in Heat Pump Systems

Didier Albert Simon Vuarnoz

The majority of cooling systems are based upon vapor-compression refrigeration technology. Its principle has been unchanged for more than a century. Miniaturization and competitiveness have been gained, but there’s still a need of alternative technologies, ...

2015

On the Efficiency, Exergy Costs and CO2 Emission Cost Allocation for an Integrated Syngas and Ammonia Production Plant

Daniel Alexander Florez Orrego

This paper presents an exergy and environmental assessment of a 1000 metric t/day ammonia production plant based on the steam methane reforming (SMR) process, including the syngas production, purification (CO2 capture) and compression units, as well as the ...

2015

Performance and profitability perspectives of a CO2 based district energy network in Geneva's City Centre

François Maréchal, Daniel Favrat, Céline Weber, Samuel Henchoz

A new type of district energy network providing simultaneously heating and cooling services is being investigated. It is based on the use of CO2 as a heat transfer fluid by taking advantage of the latent heat of vaporization, to store and transfer heat acr ...

Elsevier2015

Experimental investigation of electrical domestic heat pumps equipped with a twin-stage oil-free radial compressor

Jean-Baptiste Carré

The world energy consumption has dramatically increased since the end of the World War II. The main share of this energy comes from fossil fuel combustion. The worldwide domestic sector consumes about 30% of the global energy supply and the biggest share o ...

EPFL2015

Adiabatic Demagnetisation Refrigeration Extension for SQUID Magnetometer

Kjersti Skaaraaen Herberg

A method for decreasing the minimum temperature achievable by a SQUID magnetometer is presented, based on adiabatic demagnetisation refrigeration. The method is found to successfully provide cooling to below 0.26 K for more than an hour. However, performin ...

2014

Development of a New Generation of Ammonia Sensors on Printed Polymeric Hotplates

Nico de Rooij, Danick Briand, Francisco Molina Lopez, Andres Felipe Vasquez Quintero, El Hadji Malick Camara

Conducting polyaniline-based chemiresistors on printed polymeric micro-hotplates were developed, showing sensitive and selective detection of ammonia vapor in air. The devices consist of a fully inkjet-printed silver heater and interdigitated electrodes on ...

American Chemical Society2014

Experimental investigation of a Thermally Driven Heat Pump based on a double Organic Rankine Cycle and an oil-free Compressor-Turbine Unit

Daniel Favrat, Jürg Alexander Schiffmann, Jonathan Demierre, Johannes Wegele

This paper presents the experimental investigation of a concept of Thermally Driven Heat Pump (TDHP), based on the coupling of a vapor compression heat pump cycle and an Organic Rankine Cycle (ORC). The studied concept uses a single stage centrifugal compr ...

Elsevier2014

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