Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Long-Term Pumping Test to Study the Impact of an Open-Loop Geothermal System in a Coastal Area |
| Abstract | Compared to other European countries, there is limited use of geothermal resources in Italy for the heating and cooling of buildings (UGI-CNG, 2007). Low-temperature geothermal resources, which can be readily used for this purpose, can be found throughout Italy. The high cost and scarcity of fossil fuels have promoted the increased use of natural heat for a number of direct applications. Just as for fossil fuels, the exploitation of geothermal energy should consider its environmental impact and sustainability. Particular attention should be paid to so-called open loop geothermal systems, which use groundwater as geothermal fluid. From an economic point of view, the implementation of this kind of geothermal system is particularly attractive in coastal areas, which have generally shallow aquifers. The potential problem of seawater intrusion has led to laws that restrict the use of groundwater. The limited availability of freshwater could be a major impediment for the utilization of geothermal resources. We propose a methodology, based on an experimental approach, to characterize a coastal area in order to exploit low-enthalpy geothermal resources. A coastal karst-area near Bari, in Southern Italy, was selected for this purpose. A long-term pumping test was performed to create analog for an open-loop geothermal system. Electrical resistivity measurements were carried out, using "time-lapse" techniques, to monitor the dynamics of the freshwater-seawater interface. The results show that the pumping does not affect the quantitative and qualitative characteristics of the aquifer. The electric conductivity values suggest very limited sea water intrusion. |
| Source | ASCE - EWRI World Environmental & Water Resources Congress, Cincinnati - Ohio, May 19-23, 2013. |
| Year | 2013 |
| Type | Poster |
| Authors | M. C. Caputo (1), L. De Carlo (1), R. Masciale (1), A. Sciortino (2) |
| Text | 323046 2013 Long Term Pumping Test to Study the Impact of an Open Loop Geothermal System in a Coastal Area M. C. Caputo 1 , L. De Carlo 1 , R. Masciale 1 , A. Sciortino 2 1 CNR IRSA UOS Bari 2 California State University, Long Beach Compared to other European countries, there is limited use of geothermal resources in Italy for the heating and cooling of buildings UGI CNG, 2007 . Low temperature geothermal resources, which can be readily used for this purpose, can be found throughout Italy. The high cost and scarcity of fossil fuels have promoted the increased use of natural heat for a number of direct applications. Just as for fossil fuels, the exploitation of geothermal energy should consider its environmental impact and sustainability. Particular attention should be paid to so called open loop geothermal systems, which use groundwater as geothermal fluid. From an economic point of view, the implementation of this kind of geothermal system is particularly attractive in coastal areas, which have generally shallow aquifers. The potential problem of seawater intrusion has led to laws that restrict the use of groundwater. The limited availability of freshwater could be a major impediment for the utilization of geothermal resources. We propose a methodology, based on an experimental approach, to characterize a coastal area in order to exploit low enthalpy geothermal resources. A coastal karst area near Bari, in Southern Italy, was selected for this purpose. A long term pumping test was performed to create analog for an open loop geothermal system. Electrical resistivity measurements were carried out, using time lapse techniques, to monitor the dynamics of the freshwater seawater interface. The results show that the pumping does not affect the quantitative and qualitative characteristics of the aquifer. The electric conductivity values suggest very limited sea water intrusion. ASCE EWRI World Environmental Water Resources Congress Cincinnati Ohio May 19 23, 2013. Internazionale Contributo Poster mariaclementina.caputo CAPUTO MARIA CLEMENTINA rita.masciale MASCIALE RITA lorenzo.decarlo DE CARLO LORENZO |