Concept

Absorption refrigerator

Related publications (97)

Utility Optimization in a Brewery Process Based on Energy Integration Methodology

François Maréchal, Helen Carla Becker, Monika Dumbliauskaite

This paper presents a methodology aimed at improving the energy efficiency of a brewery applying process integration techniques. The different steps of the analysis are presented. The first step is the identification of the process energy requirements and ...

2010

Falling film evaporation on a tube bundle with plain and enhanced tubes

Mathieu Habert

The complexities of two-phase flow and evaporation on a tube bundle present important problems in the design of heat exchangers and the understanding of the physical phenomena taking place. The development of structured surfaces to enhance boiling heat tra ...

EPFL2009

Ammonia two-phase flow in a horizontal smooth tube: Flow pattern observations, diabatic and adiabatic frictional pressure drops and assessment of prediction methods

John Richard Thome, Jesus Moreno Quiben, Ricardo Lima

The present study illustrates new experimental two-phase flow pattern observations together with diabatic boiling and adiabatic two-phase frictional pressure drop results for ammonia (R7117) flowing inside a 14-mm internal diameter, smooth horizontal stain ...

2009

Far-infrared sensor with LPCVD-deposited low-stress Si-rich nitride absorber membrane—Part 1. Optical absorptivity

Nico de Rooij, Fabio Jutzi

This is the first part of the two articles reporting investigation of a thermal detector-type far-infrared sensor operating in the 8–14µm wavelength, using Low-Pressure-Chemical-Vapor-Deposition (LPCVD)- deposited low-stress Si-rich nitride (SiN)membrane a ...

2009

A comparison of multi-objective optimisation approaches for a gas-phase refrigeration process

François Maréchal, Hubert Thieriot

Cooling of a gas stream using a refrigeration process is a common industrial problem, with many possible flowsheet solutions. This problem has been investigated using two different multi-objective optimisation techniques, with the aim of comparing these te ...

2008

Low power ORC-ORC systems for heat pump applications

Daniel Favrat, Jonathan Demierre

This paper presents a study of a residential (about 20kW) ORC-ORC (Organic Rankine Cycle) thermally driven heat pump. The system works with three different temperature levels similar to absorption heat pumps. The proposed concept is a hermetic system using ...

2008

Drying front and water content dynamics during evaporation from sand delineated by neutron radiography

Dani Or, Nima Shokri

Evaporative drying of porous media is jointly controlled by external ( atmospheric) conditions and by media internal transport properties. Effects of different atmospheric potential evaporative demand on observed drying rates were studied in a series of la ...

2008

CO2-emissions reduction potential and costs of a decentralized energy system for providing electricity, cooling and heating in an office-building in Tokyo

Céline Weber

Decentralized energy systems are thought to have great potential for supplying electricity, cooling, and heating to buildings. A decentralized system combining a solid oxide fuel cell (SOFC) with an absorption chiller- heater (ACH) is proposed. The CO2-emi ...

2006

Transport properties of supercritical carbon dioxide

Thierry Meyer, Frédéric Lavanchy

A review focuses on expts. describing the hydrodynamic behavior and the heat transfer properties of supercrit. CO2 and the application of supercrit. fluids in refrigeration and cooling. ...

2005

Falling film evaporation on a single tube and on a tube bundle

Jean-François Roques

This study is a contribution for the improvement of horizontal falling film heat exchangers. This type of evaporator has the potential to be widely used in the petrochemical industry, for the sea water desalination, or in the large refrigeration systems. A ...

EPFL2004

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