Skip to main content
European Commission logo
italiano italiano
CORDIS - Risultati della ricerca dell’UE
CORDIS
CORDIS Web 30th anniversary CORDIS Web 30th anniversary
Contenuto archiviato il 2024-06-18

A new equation of state for solutes in high-temperature fluids

Obiettivo

"Hot aqueous fluids are key agents in geological transport processes in the Earth’s crust, redistributing geothermal heat as well as dissolved components. Thereby, they become alternative energy resources, create valuable mineral deposit and fundamentally control the composition of the oceans. To quantitatively understand these geochemical processes requires an accurate method to evaluate the thermodynamic properties of the fluids including their dissolved components (solutes), over wide ranges of temperature, pressure and fluid density from liquid- to vapor-like. Solute thermodynamics is commonly modeled using the Helgeson-Kirkham-Flowers (HKF) equation of state, but this empirical model becomes unreliable in the vicinity of the critical point of water. This limitation restricts modeling hydrothermal systems, where the importance of near-critical and low-density fluids in heat and mass transfer is increasingly recognized.
The goal of this study is to pioneer a new equation of state describing the standard state properties of aqueous solutes over wide ranges of pressure and temperature, valid for low- to high-density fluids including near-critical conditions. This study will use recent advances in the theory of solute thermodynamics in compressible fluids to derive the mathematical form of the equation of state, and combine these results with recently emerging experimental data for low-density fluids at high temperature. Molecular simulations provide atomic-scale insights into solute-solvent interactions and will be used to complement the experimental constraints. The new model will improve our ability to understand high temperature fluid-rock interactions and thus promote multi-disciplinary research at the nexus of hydrothermal geochemistry, economic geology, geothermal energy and chemical engineering."

Invito a presentare proposte

FP7-PEOPLE-2012-IIF
Vedi altri progetti per questo bando

Coordinatore

EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH
Contributo UE
€ 184 709,40
Indirizzo
Raemistrasse 101
8092 Zuerich
Svizzera

Mostra sulla mappa

Regione
Schweiz/Suisse/Svizzera Zürich Zürich
Tipo di attività
Higher or Secondary Education Establishments
Contatto amministrativo
Christoph A. Heinrich (Prof.)
Collegamenti
Costo totale
Nessun dato