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Understanding the thermo-mechanical response of heat exchanger piles

Publications associées (40)

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Heat Exchanger Anchors for Thermo-active Tunnels

Lyesse Laloui, Fabrice Dupray, Thomas Mimouni, Sophie Minon

Shallow geothermal power represents an important energy resource for the heating and cooling of the buildings. Due to relatively low temperature levels encountered at shallow depths in the soil, between 10°C and 20°C, heat pumps are required to process the ...

Swiss Association of Road and Transportation Experts2013

Theoretical and Experimental Study of a Thermally Driven Heat Pump Based on a Double Organic Rankine Cycle

Jonathan Demierre

Nowadays, one of the main alternatives for a more rational use of energy in heating applications is the heat pumping technologies. The market is dominated by two kinds of heat pump systems: the electrically driven vapor compression heat pumps (EHP), which ...

EPFL2012

A Laboratory Investigation on Thermal Properties of the Opalinus Claystone

Mohammad Monfared

Some aspects of the thermal behavior of the Opalinus claystone are investigated through laboratory tests conducted on a new hollow cylinder triaxial apparatus specially designed for studying the thermo-hydromechanical behavior of very low permeable materia ...

Springer Vienna2011

In-situ testing of a heat exchanger pile

Lyesse Laloui

The behavior of a pile subjected to thermo-mechanical loadings was studied in situ with the aim of quantifying the thermal influence on the bearing capacity of heat exchanger piles. A pile situated in a building under construction was equipped with a chann ...

ASCE2011

Investigations on the mechanical behavior of a heat exchanger pile

Lyesse Laloui, Mathieu Nuth

The geothermal use of concrete geostructures (piles, walls and slabs) is an environmentally friendly way of cooling and heating buildings. With such geothermal structures, it is possible to transfer energy from the ground to fluid-filled pipes cast in conc ...

Crc Press-Taylor & Francis Group, 6000 Broken Sound Parkway Nw, Ste 300, Boca Raton, Fl 33487-2742 Usa2008

The challenge of introducing an exergy indicator in a local low on energy

François Maréchal, Daniel Favrat

Extending the idea of exergy to practitioners and policy makers is still a major challenge. Recently the "Canton of Geneva" in Switzerland introduced a new law governing the procedures of attribution of building permits for new or retrofitted city areas. A ...

2006

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

Soil properties and water movement

David Andrew Barry, Marc Parlange

The vadose zone is the region between ground level and the upper limits of soil fully saturated with water. Hydrology in the zone is complex: nonlinear physical, chemical, and biological interactions all affect the transfer of heat, mass, and momentum betw ...

Oxford University Press1999

Gestion biomimétique de l'énergie dans le bâtiment

Manuel Bauer

The efficient thermal control of buildings is a complex problem. Non controlled perturbations like user behaviour and meteorological conditions can change much with time and make this task difficult. This work proposes considering the building as a 'living ...

EPFL1998

Numerical simulation of deck de-icing using energy pile systems

Aymen Achich

Geothermal energy is heat energy generated and stored in the Earth. With the awareness of the society about environmental issues, geothermal power is developing worldwide. It is cost-effective, reliable, sustainable, and environmentally friendly but has hi ...