groundwater heat pump Articles

  • Modelling of groundwater flow and heat transport

    Client: Transport for London Location: London Services: Groundwater Modelling Issues: Identifying the potential effects of pumping excess heat to the Chalk aquifer Summary: ESI was commissioned to test the feasibility of one of the possible solutions identified to prevent temperatures on the ...

  • Utilisation of air-groundwater exergy potential for improvement of the performance of heat pump systems

    This paper reports a study on the use of the non-flow air-groundwater exergy potential for improving heat pump performance. It is shown that for air/groundwater temperature differences of order 15°C, energy savings up to 50% may be expected for heat pumps operating either in the heating mode or in the cooling mode. It is also shown that the reduction in the energy required to drive the heat pump ...


    By Inderscience Publishers

  • Storing Heat Underground

    Underground thermal energy storage (UTES) is a system that uses inter-seasonal heat storage, storing excess heat from the summer for use in winter heating, and the cooling potential from winter for cooling in summer. A cost-effective, low-energy and low-risk proven renewable technology, UTES reduces carbon emissions by up to 60% and is becoming an increasingly popular choice for residential, ...


    By Boode Waterwell Systems

  • Case study - Chlorinated groundwater treatment

    Problem A Fortune 50 company implemented a remedial project to collect and treat polluted groundwater from a site in Central New York, preventing the mitigation of impacted groundwater from flowing into local waterways. An engineering and construction firm was hired to design and build an effective, efficient groundwater treatment system. Collection of the polluted water would be done ...

  • Case study - Chlorinated groundwater treatment

    Overview A Fortune 50 company implemented a remedial project to collect and treat polluted groundwater from a site in Central New York, preventing the mitigation of impacted groundwater from flowing into local waterways. An engineering and construction firm was hired to design and build an effective, efficient groundwater treatment system. Collection of the polluted water would be ...

  • Impacts of Shallow Geothermal Energy on Groundwater Quality

    The use of shallow geothermal energy (SGE) systems to acclimatize buildings has increased exponentially in the Netherlands and worldwide. In certain areas, SGE systems are constructed in aquifers also used for drinking water supply raising the question of potential groundwater quality impact. Impacts of Shallow Geothermal Energy on Groundwater Quality provides a hydrochemical and geomicrobial ...


    By IWA Publishing

  • Pump it up

    Aligning itself with a major equipment supplier and dealer helps the company access the tools and expertise it needs without risking too much capital. Aquatech is the distributor for Godwin Pumps of America in Ontario, Nunavut, Newfoundland and Eastern Labrador, all resource-rich territories. A recent purchase of Godwin by ITT Corporation has expanded the lineup of mine sector pumps. The company ...


    By Aquatech Dewatering Company

  • LNAPL remediation using electrical resistance heating

    Abstract An Electrical Resistance Heating (ERH) pilot test was conducted in the fall of 1998 to determine the effectiveness of using ERH in combination with soil vapor extraction (SVE) for the remediation of benzene and light nonaqueous-phase liquids (LNAPL) at an island location on a river in the Midwest. Hydrocarbon-stained soils were discovered on an island in Ohio in May 1993 during the ...


    By TRS Group, Inc.

  • Opening markets for CSP – the industrial heat application

    Heavy industry can be a viable secondary market today for CSP producers, but questions remain on whether start-up costs are justifiable for industrial users, and how reliable CSP can be for processes that can't pace production by the sun. Solar thermal heat implies steam, and industries that need steam include refining, food processing, wood-working, desalination and chemicals, among others. ...


    By FCBI Energy

  • ISCR-Enhanced Bioremediation Accelerates Groundwater Cleanup at Active Manufacturing Facility

    In the winter of 2008, full-scale in situ chemical reduction (ISCR) was implemented as a removal action at the Siltronic Corporation site in Portland, OR, to treat a source area contaminated by releases of TCE. The source area was considered to be the portion of the site with concentrations of TCE in groundwater greater than 11,000 µg/L, suggesting the ...


  • Case study - Veolia MPPE Technology - LMBV Schwarze Pumpe - DE

    Groundwater remediation Former brown coal conversion site Five MPPE units Operational since 2002 Challenge 2 years of intensive testing Reinfiltration of purified water Ideal to enhance insitu biodegradation Enhanced DNAPL & LNAPL removal with surfactant ...

  • KS 1000 compact stripper case study - IEG Technologie GmbH

    VOC-contaminated groundwater is treated in a 2-stage low-profile compact vacuum stripper (CVS). A negative pressure blower applies a vacuum to the treatment chamber. In this chamber a 2-stage stripping reactor is located and the stripping air is directed to the upper tray. The groundwater loops around on the upper tray along designate barriers, while the stripping air is being pulled through the ...


    By IEG Technologie GmbH

  • Geothermal Energy Technologies

    Technology Overview   Nowhere is the raw power of geothermal resources more evident than at the Old Faithful geyser at Yellowstone National Park. (Joel Renner)  Geothermal energy is natural heat from the Earth's interior where temperatures reach greater than 7000°F. The heat is brought to the surface as steam or hot water—created when water flows through heated, permeable ...


  • Fuel spills near Norton Reservoir

    Fire and state officials are investigating the possible environmental impact of a kerosene spill near the Norton Reservoir that leaked an estimated 250 gallons of the heating fuel into the snow and ground on Saturday afternoon. Fire Capt. Kent Campbell said he was called to investigate a spill at an outside storage tank at a mobile home park on Mansfield Avenue (Route 140), when a homeowner ...


    By Penney Engineering, Inc

  • Modelling of an open loop ground source energy design

    Client: Max Fordham Consulting Engineers Location: London Services: Ground Source Energy Modelling Summary: An open loop ground source heating/cooling scheme is being developed for the redevelopment of the Tate Modern, located close to the River Thames.  ESI Ltd was instructeded by Max Fordham to construct a FEFLOW ...

  • The Italian Job

    Open loop systems abstract groundwater from one or more boreholes. Heat is either extracted or added by the primary refrigerant loop, and the water is returned to a separate well or body of water. The supply and return lines need to be placed far enough apart to ensure thermal recharge of the source. The key issues for open loop systems relate to borehole yields, licensing and, most importantly, ...


    By Geoquip Water Solutions

  • Feasibility study for ground source energy system at Parklands, Bristol

    WCR Investments Limited (WCR) appointed ESI Ltd to undertake an options appraisal for the installation of a carbon efficient and cost effective heating/cooling system for some new commercial office spaces that are being developed at the Parklands Site, Bristol. The main objectives were to assess the technical and economic feasibility of a Ground Source Energy system, based on an understanding of ...

  • Case study: Hunters Point

    In Situ Thermal Remediation with Gas Thermal Remediation (GTR©) is being used to remove NAPL contaminants from a former military base. The system is extracting nearly 1,000 liters of liquid waster every week. LNAPLs, such as fuel and oils, and DNAPLs, such as PCBs and chlorinated solvent, are being removed from the subsurface to make way for a residential homes. In Situ+NAPL ...

  • Green remediation

    The US Environmental Protection Agency’s (EPA) strategic plan calls for increased research and application of sustainable systems that promote environmental stewardship, reduce greenhouse gas (GHG) emissions, and improve energy efficiency. One area of this research is green remediation. Green remediation is a relatively new approach to environmental cleanup; expanded from the traditional ...


  • Modeling geothermal wells using SVHeat and SVFlux

    Numerical modeling of geothermal processes has received increased attention in recent years. The process of installing geothermal heating systems in residential homes and cottages is one application of numerical models. These systems typically involve drilling between one and three wells on a particular property. Heat exchangers then act as a pump and remove heat from the ground in order to heat ...


    By SoilVision Systems Ltd.

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