Geothermal Heat Articles

  • Projects Play Fairways Geothermal Resource Analysis, Washington - Case Study

    AltaRock Energy, in cooperation with the Washington Division of Geology and Earth Resources (WADGER), is conducting a detailed exploration study of Washington State as part of the Play Fairway grant funded by the  ...


    By AltaRock Energy, Inc.

  • Projects Umatilla Indian Reservation Geothermal Resource Study - Case Study

    This is an exciting new project to expand understanding of the natural resources of the Umatilla Indian Reservation (UIR) and move the Confederated Tribes of the Umatilla Indian Reservation (CTUIR) one step closer to energy independence. AltaRock is working with HotRock Energy ...


    By AltaRock Energy, Inc.

  • Striving For Perfection: Flow Energy Partnership Improves Geothermal Energy Production

    Since the early twentieth century, geothermal energy has been used to produce electricity. In the 1980’s and 90’s, rapid expansion in the demand for geothermal energy put pressure on suppliers to reduce costs and increase efficiencies. Now geothermal energy production is becoming a common practice around the globe. One of the largest energy companies in Turkey is blazing the ...


    By Sierra Instruments, Inc.

  • Case Study - Aluto Langano Power Plant Rehabilitation

    Aluto Langano, Ethiopia – 2007 The Aluto Langano Geothermal Pilot Plant (ALGPP) is located on the Aluto volcanic complex of the Ethiopian Rift valley, close to the eastern escarpment between Lake Langano and Lake Ziway, some 200 km southeast of Addis Ababa. The Aluto volcanic complex is a young acidic system consisting of domes, lava, and pyroclastic interbeds. The geothermal field was ...

  • Zoo-technical application of Ground Source Heat Pumps: a pilot case study

    Ground Source Heat Pumps are energy-efficient HVAC systems usually adopted in residential and commercial buildings. However the control of the thermal environment is required not only in spaces occupied by people, but also in intensive breeding farms, in order to maintain healthy conditions and to increase productivity. In the Italian livestock breedings, heating is usually provided by means of ...


    By Tethys srl

  • Case Study - Evaluating Geothermal Potential - Ravenna, Italy

    University of Bologna researchers carried out an investigation of the thermal properties of the coastal aquifer at Ravenna Italy in order to evaluate its geothermal potential for residential heating. As part of that investigation, they measured the water temperature versus depth at 56 piezometers. EnviroInsite was then utilized to establish the relationship of water temperature with land use, ...


    By EI LLC

  • Geothermal Heat Pump (GHP) - Case Studies

    Case Study: “GHP schools used approximately 26% less source energy per square foot of floor area,” according to an evaluation of Lincoln, Nebraska schools by the Department of Energy. The report concludes that the schools using GHP technology “outperform others in the school district.” Case Study: Annual electrical consumption in Fort Polk ...

  • The Swedish Connection

    IKEA Group is fully committed to renewable energy, waste reduction, and more. Stefan Sjöstrand, the company’s Canadian president, walks us through the instructions. IKEA is more than just a household name, it is a world leader in sustainable business practice, with ...

  • Projected Costs of Generating Electricity - 2015 Edition

    This joint report by the International Energy Agency (IEA) and the Nuclear Energy Agency (NEA) is the eighth in a series of studies on electricity generating costs. As policy makers work to ensure that the power supply is reliable, secure and affordable, while making it increasingly clean and sustainable in the context of the debate on climate change, it is becoming more crucial that they ...


    By International Energy Agency

  • Case study - Managing complex energy systems

    Introduction: Campus on a Renewable Mission The Chewonki Foundation owns and runs a school campus in Wiscasset, Maine that supports a high school program, a boys and girls summer camp, and an organic farm. Chewonki is an alternative school with a focus on environmental education and natural history. ch-classroom.jpgAs such, one of the Foundation’s goals is to teach its students ...


    By Powerhouse Dynamics

  • Case study - green machine in Romania running off geothermal brine

    Gross Power Output Avg: 50kWe Thermal Heat Input: 700kWt Hot Water Input Range: 105°C Hot Water Flow: 10.1 l/s Average Ambient Temp: 12°C The Green Machine was commissioned at a geothermal well in Romania. The machine produces 50kW (gross) of electricity from the geothermal hot water (216°F/102°C) without any fuel or emissions. To further increase the ...


    By ElectraTherm

  • FEMP Publishes Aspinall Courthouse - Case Study

    The Federal Energy Management Program (FEMP) announces the publication of Aspinall Courthouse: GSA’s Historic Preservation and Net-Zero Renovation. This case study documents the effort of the U.S. General Services ...


    By US Department of Energy

  • A Cleaner Energy Future

    As renewable energy plays an increasingly important role in the world’s energy portfolio, the standards of ASTM International Committee E44 are helping to pave the way for innovation in clean energy sources. A growing population and improving living standards around the world are causing significant increases in energy demand and competition for fossil fuels. These escalating energy ...


    By ASTM International

  • Proof: For superior energy efficiency - Water Beats VRF - Case Study

    ASHRAE’s Apples to Apples Comparison Proves Hydronics Delivers Superior Energy Efficiency over VRF For years Variable Refrigerant Flow (VRF) manufacturers have been touting their systems’ superior energy efficiency over hydronics without providing the supporting data. Then ASHRAE decided to showcase both systems in its Atlanta headquarters and meter their performance. ...


    By Evapco Inc.

  • Exergetic and sustainability performance assessment of geothermal (ground source) ejector heat pumps

    Although ejectors have been used in cooling/refrigeration and Heat Pumps (HP) applications for a long time, utilisation of Geothermal Ejector Heat Pump (GEHP) with Ground–Heat Exchanger (GHE) is a new idea, which has recently appeared in the literature. In this study, we model a GEHP system with a GHE in terms of exergetic aspects and apply our model to this system in the heating mode. The system ...


    By Inderscience Publishers

  • Investigation of a hybrid solar and geothermal driven absorption cooling system for district applications

    In this paper, a new hybrid geothermal and solar driven absorption cooling system (ACS) is proposed for low–temperature district energy applications. Two approaches are proposed in this study, namely: a) a new model for determining the specific entropy values of LiBr–water solution and (b) two new energetic and exergetic parameters, namely geothermal contribution index and solar contribution ...


    By Inderscience Publishers

  • Heat as a by–product or sub–product of CO2 storage in mafic and ultramafic rocks

    Since carbonates are at a lower energy state than free CO2, storage through carbonation of silicate rocks is thermodynamically favoured and proceeds spontaneously by releasing heat. In an in–situ CO2 injection site, the heat released in these exothermic reactions can be exploited in a geothermal power–plant, effectively contributing ...


    By Inderscience Publishers

  • Talking Point: Geothermal systems and the value of maintenance programmes

    Mike Deed, Managing Director of Geoquip Water Solutions, is the author of Talking Point in the October issue of Groundwater Engineering. He focuses on the huge benefits of installing a geothermal system and the importance ...


    By Geoquip Water Solutions

  • Insurance for Crossing the Valley of Death

    To achieve a modest reduction in atmospheric carbon dioxide emissions, global investment in renewable energy assets would need to increase from current levels of about $100 billion per year to $500 billion per year. Some of this increase can be accomplished by investment in existing, commercially proven technologies; but to meet the challenge of rapidly scaling renewable energy, we also need to ...


    By GLOBE SERIES

  • Feasibility study of ground source energy systems

    Client: Shaftesbury Estates Location: Wimborne St Giles, Dorset Services: Feasibility Study Summary: Feasibility Study for renewable energy options demonstrated that ground source energy should be used for cost effective space heating in a historic building As part of the restoration of St Giles House, Shaftesbury ...


    By ESI Consulting Ltd

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