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Redefining geothermal fluid properties at extreme conditions to optimize future geothermal energy extraction

Descrizione del progetto

Come utilizzare al meglio i sistemi geotermici per un uso sostenibile

L’efficienza dell’utilizzo geotermico dipende dal comportamento dei fluidi che trasferiscono il calore tra la geosfera e i componenti ingegnerizzati di una centrale elettrica. Il progetto REFLECT, finanziato dall’UE, si propone di evitare problemi legati alla chimica dei fluidi piuttosto che trattarli. Le proprietà fisiche e chimiche del fluido sono spesso definite in modo inadeguato, poiché i campionamenti in situ e le misurazioni in condizioni estreme sono difficili da datare. Pertanto, prevalgono grandi incertezze nelle attuali previsioni del modello, che verranno affrontate in REFLECT raccogliendo nuovi dati di alta qualità in aree critiche. Questi dati saranno implementati all’interno di un atlante europeo del fluido geotermico e in modelli predittivi che consentiranno di fornire raccomandazioni su come utilizzare al meglio i sistemi geotermici in maniera sostenibile.

Obiettivo

The efficiency of geothermal utilisation depends heavily upon the behaviour of the fluids that transfer heat between the geosphere and the engineered components of a power plant. Chemical or physical processes such as precipitation, corrosion, or degassing occur as pressure and temperature change with serious consequences for power plant operations and project economics. Currently, there are no standard solutions for operators to deal with these challenges.
The aim of REFLECT is to avoid the problems related to fluid chemistry rather than treat them. This requires accurate predictions and thus a thorough knowledge of the physical and chemical properties of the fluids throughout the geothermal loop. These properties are often only poorly defined, as in situ sampling as well as measurements at extreme conditions are hardly possible to date. As a consequence, large uncertainties in current model predictions prevail, which will be tackled in REFLECT by collecting new, high quality data in critical areas.
The proposed approach includes advanced fluid sampling techniques, the measurement of fluid properties at in situ conditions, and the exact determination of key parameters controlling precipitation and corrosion processes. The sampled fluids and measured fluid properties cover a large range of salinity and temperature, including those from enhanced and super-hot geothermal systems. The data obtained will be implemented in a European geothermal fluid atlas and in predictive models that both ultimately allow to adjust operational conditions and power plant layout to prevent unwanted reactions before they occur. That way, recommendations can be derived on how to best operate geothermal systems for sustainable and reliable electricity generation, advancing from an experience-based to a knowledge-based approach.

Invito a presentare proposte

H2020-LC-SC3-2018-2019-2020

Vedi altri progetti per questo bando

Bando secondario

H2020-LC-SC3-2019-RES-TwoStages

Meccanismo di finanziamento

RIA - Research and Innovation action

Coordinatore

HELMHOLTZ ZENTRUM POTSDAM DEUTSCHES GEOFORSCHUNGSZENTRUM GFZ
Contribution nette de l'UE
€ 1 008 975,00
Indirizzo
TELEGRAFENBERG
14473 POTSDAM
Germania

Mostra sulla mappa

Regione
Brandenburg Brandenburg Potsdam
Tipo di attività
Research Organisations
Collegamenti
Costo totale
€ 1 008 975,00

Partecipanti (27)