The Experts below are selected from a list of 99 Experts worldwide ranked by ideXlab platform
Antonio Galgaro - One of the best experts on this subject based on the ideXlab platform.
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Thermal short circuit on groundwater heat pump
Applied Thermal Engineering, 2020Co-Authors: Antonio Galgaro, Matteo CultreraAbstract:This paper presents a study of the feasibility of providing heating and cooling by means of an open-loop groundwater heat pump system for a restored commercial building in Rovigo, located in the Po River Plain (Italy). Results obtained from the modelling confirm the potential hydrogeological capacity of the site to provide the necessary amount of groundwater and associated energy with limited environmental impact. Injection of warmer (or cooler) water into the aquifer creates a thermal plume whose dimensions and geometry depend at first on the properties of the subsurface formations and particularly on working system conditions and by the cooling and heating loads. This study shows the risk of the thermal breakthrough between well doublets and suggests that there are several possible heating/cooling daily timetables that reduce the risk of thermal feedback between extraction and injection wells. These timetables may prevent the GWHP system from becoming uneconomical and energetically inefficient. Thermal breakthrough is common in groundwater heat exchange systems, particularly in historical town districts where the distance between wells is necessarily close due to buildings proximity and the possibility of other group plant in the neighbourhood. Most probably due to modelling difficulties, it is unusual to take into account this type of thermal contamination during an ordinary analysis of the interaction between and consequences of groundwater heat pump and aquifer systems. An approach using complex open loop modelling allows the analysis of a case of thermal feedback in order to obtain the best planning and use of the Geoexchange plant
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eu project cheap gshps the Geoexchange field laboratory
Energy Procedia, 2017Co-Authors: Antonio Galgaro, Giorgia Dalla Santa, Matteo Cultrera, David Bertermann, Johannes Mueller, Michele De Carli, Giuseppe Emmi, Angelo Zarrella, Maria Concetta Di TuccioAbstract:Abstract The Molinella test site is the open-air laboratory of the EU project entitled “Cheap-GSHPs: Cheap and Efficient Application of Reliable Ground Source Heat Exchangers and Pumps”. Here, innovative helical heat baskets and steel coaxial probes are installed next to the traditional double-U. The tests involve the probes design as well as materials and drilling techniques and machines, therefore the newly developed GSHEs can be directly compared with the traditional ones with respect to technical issues and energetic performances. The Molinella test site therefore represents a very extraordinary possibility to improve the knowledge of heat transfer processes in shallow geo-exchange systems.
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Possible applications of ground coupled heat pumps in high geothermal gradient zones
Energy and Buildings, 2014Co-Authors: Antonio Galgaro, Giuseppe Emmi, Angelo Zarrella, Michele De CarliAbstract:Abstract Geothermal energy is increasingly being used to heat and cool buildings. However its use has been slow to catch on due to the high installation costs of the most common Borehole Heat Exchangers (BHE), which constitute the major cost item of an air geothermal conditioning system. In areas where the shallow subsoil temperature is higher than normal (geothermal basins), the average temperature of the carrier water in the BHE is higher than in systems located in areas with a normal geothermal gradient, thus improving heat pump Coefficient Of Performance (COP). This paper investigates a range of solutions that use Geoexchange systems coupled with BHE in anomalous geothermal zones. This study evaluates a residential building's heating system when it is directly coupled with BHEs and compares the results with a range of thermal plant solutions. In Northern Italy, as in many other parts of the world, there are places where the ground's thermal conditions are anomalous, with temperatures reaching around 35–85 °C, instead of normal values of about 13–15 °C. The energy of the building was analyzed by means of the TRNSYS, coupled with the CaRM model—designed by the authors—which provides detailed thermal behaviour readings for Ground Heat Exchangers (GHE).
Michele De Carli - One of the best experts on this subject based on the ideXlab platform.
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eu project cheap gshps the Geoexchange field laboratory
Energy Procedia, 2017Co-Authors: Antonio Galgaro, Giorgia Dalla Santa, Matteo Cultrera, David Bertermann, Johannes Mueller, Michele De Carli, Giuseppe Emmi, Angelo Zarrella, Maria Concetta Di TuccioAbstract:Abstract The Molinella test site is the open-air laboratory of the EU project entitled “Cheap-GSHPs: Cheap and Efficient Application of Reliable Ground Source Heat Exchangers and Pumps”. Here, innovative helical heat baskets and steel coaxial probes are installed next to the traditional double-U. The tests involve the probes design as well as materials and drilling techniques and machines, therefore the newly developed GSHEs can be directly compared with the traditional ones with respect to technical issues and energetic performances. The Molinella test site therefore represents a very extraordinary possibility to improve the knowledge of heat transfer processes in shallow geo-exchange systems.
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Possible applications of ground coupled heat pumps in high geothermal gradient zones
Energy and Buildings, 2014Co-Authors: Antonio Galgaro, Giuseppe Emmi, Angelo Zarrella, Michele De CarliAbstract:Abstract Geothermal energy is increasingly being used to heat and cool buildings. However its use has been slow to catch on due to the high installation costs of the most common Borehole Heat Exchangers (BHE), which constitute the major cost item of an air geothermal conditioning system. In areas where the shallow subsoil temperature is higher than normal (geothermal basins), the average temperature of the carrier water in the BHE is higher than in systems located in areas with a normal geothermal gradient, thus improving heat pump Coefficient Of Performance (COP). This paper investigates a range of solutions that use Geoexchange systems coupled with BHE in anomalous geothermal zones. This study evaluates a residential building's heating system when it is directly coupled with BHEs and compares the results with a range of thermal plant solutions. In Northern Italy, as in many other parts of the world, there are places where the ground's thermal conditions are anomalous, with temperatures reaching around 35–85 °C, instead of normal values of about 13–15 °C. The energy of the building was analyzed by means of the TRNSYS, coupled with the CaRM model—designed by the authors—which provides detailed thermal behaviour readings for Ground Heat Exchangers (GHE).
Donna Sioros - One of the best experts on this subject based on the ideXlab platform.
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integrated solutions for energy facility management
2001Co-Authors: Donna SiorosAbstract:Section 1 Energy management. Section 2 Geoexchange. Section 3 Energy service and e-commerce. Section 4 Combined heat and power/cogeneration. Section 5 Environmental technology. Section 6 Plant and facilities management. Section 7 Facilities e-solutions.
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Integrated Solutions for Energy & Facility Management
2001Co-Authors: Donna SiorosAbstract:Section 1 Energy management. Section 2 Geoexchange. Section 3 Energy service and e-commerce. Section 4 Combined heat and power/cogeneration. Section 5 Environmental technology. Section 6 Plant and facilities management. Section 7 Facilities e-solutions.
Angelo Zarrella - One of the best experts on this subject based on the ideXlab platform.
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eu project cheap gshps the Geoexchange field laboratory
Energy Procedia, 2017Co-Authors: Antonio Galgaro, Giorgia Dalla Santa, Matteo Cultrera, David Bertermann, Johannes Mueller, Michele De Carli, Giuseppe Emmi, Angelo Zarrella, Maria Concetta Di TuccioAbstract:Abstract The Molinella test site is the open-air laboratory of the EU project entitled “Cheap-GSHPs: Cheap and Efficient Application of Reliable Ground Source Heat Exchangers and Pumps”. Here, innovative helical heat baskets and steel coaxial probes are installed next to the traditional double-U. The tests involve the probes design as well as materials and drilling techniques and machines, therefore the newly developed GSHEs can be directly compared with the traditional ones with respect to technical issues and energetic performances. The Molinella test site therefore represents a very extraordinary possibility to improve the knowledge of heat transfer processes in shallow geo-exchange systems.
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Possible applications of ground coupled heat pumps in high geothermal gradient zones
Energy and Buildings, 2014Co-Authors: Antonio Galgaro, Giuseppe Emmi, Angelo Zarrella, Michele De CarliAbstract:Abstract Geothermal energy is increasingly being used to heat and cool buildings. However its use has been slow to catch on due to the high installation costs of the most common Borehole Heat Exchangers (BHE), which constitute the major cost item of an air geothermal conditioning system. In areas where the shallow subsoil temperature is higher than normal (geothermal basins), the average temperature of the carrier water in the BHE is higher than in systems located in areas with a normal geothermal gradient, thus improving heat pump Coefficient Of Performance (COP). This paper investigates a range of solutions that use Geoexchange systems coupled with BHE in anomalous geothermal zones. This study evaluates a residential building's heating system when it is directly coupled with BHEs and compares the results with a range of thermal plant solutions. In Northern Italy, as in many other parts of the world, there are places where the ground's thermal conditions are anomalous, with temperatures reaching around 35–85 °C, instead of normal values of about 13–15 °C. The energy of the building was analyzed by means of the TRNSYS, coupled with the CaRM model—designed by the authors—which provides detailed thermal behaviour readings for Ground Heat Exchangers (GHE).
Giuseppe Emmi - One of the best experts on this subject based on the ideXlab platform.
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eu project cheap gshps the Geoexchange field laboratory
Energy Procedia, 2017Co-Authors: Antonio Galgaro, Giorgia Dalla Santa, Matteo Cultrera, David Bertermann, Johannes Mueller, Michele De Carli, Giuseppe Emmi, Angelo Zarrella, Maria Concetta Di TuccioAbstract:Abstract The Molinella test site is the open-air laboratory of the EU project entitled “Cheap-GSHPs: Cheap and Efficient Application of Reliable Ground Source Heat Exchangers and Pumps”. Here, innovative helical heat baskets and steel coaxial probes are installed next to the traditional double-U. The tests involve the probes design as well as materials and drilling techniques and machines, therefore the newly developed GSHEs can be directly compared with the traditional ones with respect to technical issues and energetic performances. The Molinella test site therefore represents a very extraordinary possibility to improve the knowledge of heat transfer processes in shallow geo-exchange systems.
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Possible applications of ground coupled heat pumps in high geothermal gradient zones
Energy and Buildings, 2014Co-Authors: Antonio Galgaro, Giuseppe Emmi, Angelo Zarrella, Michele De CarliAbstract:Abstract Geothermal energy is increasingly being used to heat and cool buildings. However its use has been slow to catch on due to the high installation costs of the most common Borehole Heat Exchangers (BHE), which constitute the major cost item of an air geothermal conditioning system. In areas where the shallow subsoil temperature is higher than normal (geothermal basins), the average temperature of the carrier water in the BHE is higher than in systems located in areas with a normal geothermal gradient, thus improving heat pump Coefficient Of Performance (COP). This paper investigates a range of solutions that use Geoexchange systems coupled with BHE in anomalous geothermal zones. This study evaluates a residential building's heating system when it is directly coupled with BHEs and compares the results with a range of thermal plant solutions. In Northern Italy, as in many other parts of the world, there are places where the ground's thermal conditions are anomalous, with temperatures reaching around 35–85 °C, instead of normal values of about 13–15 °C. The energy of the building was analyzed by means of the TRNSYS, coupled with the CaRM model—designed by the authors—which provides detailed thermal behaviour readings for Ground Heat Exchangers (GHE).