Pueden los pozos hidrotermales someros en pares de ciclo abierto ayudar a remediar la intrusión de agua de mar?

Keuleneer, François De; Renard, Philippe

doi:10.1007/s10040-015-1230-9

Cited by 6 publications

(6 citation statements)

References 17 publications

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“…Coastal shallow aquifers are problematic for GWHPs installations because of corrosion or incrustation of heat exchangers risks; however, heat exchangers specifically developed for saline water could be used. Also, if wells are properly arranged, GWHPs can help to reduce saltwater intrusion [63].…”

Section: Potential Interferences With Specific (Hydro)geological Condmentioning

confidence: 99%

Assessment and Minimization of Potential Environmental Impacts of Ground Source Heat Pump (GSHP) Systems

Casasso

Sethi

2019

Water

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Ground source heat pumps (GSHPs) gained increasing interest owing to benefits such as low heating and cooling costs, reduction of greenhouse gas emissions, and no pollutant emissions on site. However, GSHPs may have various possible interactions with underground and groundwater, which, despite the extremely rare occurrence of relevant damages, has raised concerns on their sustainability. Possible criticalities for their installation are (hydro)geological features (artesian aquifers, swelling or soluble layers, landslide-prone areas), human activities (mines, quarries, landfills, contaminated sites), and groundwater quality. Thermal alterations due to the operation of GSHPs may have an impact on groundwater chemistry and on the efficiency of neighboring installations. So far, scientific studies excluded appraisable geochemical alterations within typical ranges of GSHPs (±6 K on the initial groundwater temperature); such alterations, however, may occur for aquifer thermal energy storage over 40 • C. Thermal interferences among neighboring installations may be severe in urban areas with a high plant density, thus highlighting the need for their proper management. These issues are presented here and framed from a groundwater quality protection perspective, providing the basis for a discussion on critical aspects to be tackled in the planning, authorization, installation, and operation phase. GSHPs turn out to be safe and sustainable if care is taken in such phases, and the best available techniques are adopted.

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Section: Potential Interferences With Specific (Hydro)geological Condmentioning

confidence: 99%

Assessment and Minimization of Potential Environmental Impacts of Ground Source Heat Pump (GSHP) Systems

Casasso

Sethi

2019

Water

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“…Groundwater cooling can reduce microbial growth in groundwater. In general, warm groundwater provides more a suitable environment for harmful thermophilic microbes such as faecal bacteria than cool groundwater [27]. Arola and Korkka-Niemi [20] reported elevated groundwater temperatures due to urbanisation in Finland.…”

Section: Power and Groundwater Flux Design Authors And Affiliationsmentioning

confidence: 99%

“…Groundwater energy utilisation requires site-specific hydrogeological knowledge and an ability to recognise the collective risks caused by variations in the groundwater temperature and level [24] [27]. Groundwater energy usage has to remain at a thermally sustainable level [4] to achieve both the environmental and economic operational requirements.…”

Section: Introductionmentioning

confidence: 99%

Groundwater Utilisation for Energy Production in the Nordic Environment: An Energy Simulation and Hydrogeological Modelling Approach

Arola¹,

Okkonen²,

Jokisalo³

2016

JWARP

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Groundwater provides one option to utilise renewable energy sources. The long-term groundwater energy potential for three building complexes, situated at latitude of 64°, was investigated by combining an energy demand simulation for the buildings with hydrogeological modelling. First, a reference year for the building energy demand was created. Secondly, groundwater flow requirements were calculated. The results of the previous stages were utilised in groundwater heat transport modelling in an environment where the natural temperature of groundwater was 4.9˚C. Finally, the long-term (50 years) groundwater energy potential was calculated. The groundwater maintained its heating potential during 50 years of operation. When both heating and cooling power were demanded, the long-term pumping rate of groundwater decreased by 60,000 m 3 /a. Energy utilisation created a cold groundwater plume downstream, in which the temperature decreased by 1 to 2.5˚C within a distance of 300 m from the site. Groundwater can provide a longterm energy source for large building complexes in the Nordic climate. Results indicate that groundwater could effectively be utilised until the temperature reaches approximately 4˚C. Accurate information on the building energy demand and hydrogeology is essential for successful operation.

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“…Similar to the well pair introduced by Lu et al . [], a hydrothermal doublet was recently introduced by Keuleneer and Renard [] with the combined aim of seawater intrusion remediation and energy production.…”

Section: Introductionmentioning

confidence: 99%

“…The injection-extraction well pair system significantly outperforms a traditional single extraction well in terms of the net extraction rate for a broad range of well placement and pumping rates, highlighting the potential benefit of developing a hydraulic barrier in controlling seawater intrusion. Similar to the well pair introduced by Lu et al [2013b], a hydrothermal doublet was recently introduced by Keuleneer and Renard [2015] with the combined aim of seawater intrusion remediation and energy production.…”

Section: Introductionmentioning

confidence: 99%

Replenishing an unconfined coastal aquifer to control seawater intrusion: Injection or infiltration?

Shi

Xin

et al. 2017

Water Resources Research

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In this study, we compare the performances of well injection and pond infiltration in controlling seawater intrusion in an unconfined coastal aquifer through two scenario groups: (1) a single injection well versus an elliptic infiltration pond and (2) an injection-extraction well pair system versus an elliptic infiltration pond-extraction well system. Comparison is based on quantitative indicators that include the interface toe location, saltwater volume, and maximum net extraction rate (for scenario 2). We introduce a method to determine the maximum net extraction rate for cases where the locations of stagnation points cannot be easily derived. Analytical analysis shows that the performances of injection and infiltration are the same, provided that the pond shape is circular. The examination of scenario group 1 suggests that the shape of the infiltration pond has a minor effect on the interface toe location as well as the reduction in the saltwater volume, given the same total recharge rate. The investigation of scenario group 2 indicates, by contrast, that the maximum net extraction rate increases significantly with the increasing ratio of b to a, where a and b are semiaxes of the ellipse parallel and perpendicular to the coastline, respectively. Specifically, for a typical aquifer assumed, an increase of 40% is obtained for the maximum net extraction when b/a increases from 1/200 to 200. Despite that the study is based on a simplified model, the results provide initial guidance for practitioners when planning to use an aquifer recharge strategy to restore a salinized unconfined coastal aquifer.

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Pueden los pozos hidrotermales someros en pares de ciclo abierto ayudar a remediar la intrusión de agua de mar?

Cited by 6 publications

References 17 publications

Assessment and Minimization of Potential Environmental Impacts of Ground Source Heat Pump (GSHP) Systems

Assessment and Minimization of Potential Environmental Impacts of Ground Source Heat Pump (GSHP) Systems

Groundwater Utilisation for Energy Production in the Nordic Environment: An Energy Simulation and Hydrogeological Modelling Approach

Replenishing an unconfined coastal aquifer to control seawater intrusion: Injection or infiltration?

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