geothermal heat pump Articles

  • 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 ...

  • 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

  • What’s geothermal again?

    Some green energy sources seem to have charisma; others struggle for public attention with little success. Solar energy is an “it” technology, as evidenced once again by the tremendous participation in the annual Solar Power International conference in Anaheim, California this week (Oct. 27-29). Twice as many companies (945) are displaying their wares in the Expo Hall this year, despite the still ...

  • 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 ...


  • Geothermal Energy... Power from the Depths

    The Earth's crust is a bountiful source of energy—and fossil fuels are only part of the story. Heat or thermal energy is by far the more abundant resource. To put it in perspective, the thermal energy in the uppermost six miles of the Earth's crust amounts to 50,000 times the energy of all oil and gas resources in the world! The word 'geothermal' literally means 'Earth' plus 'heat.' ...

  • Rational use and management of geothermal energy resources

    This article identifies and explains several attributes of geothermal energy. High exergetic efficiency due to a close temperature tie between geothermal energy and district heating and cooling was noted. Parameters governing the rational use and management of geothermal energy systems with special emphasis on integrated-cascaded district energy systems were formulated and explained with two case ...


    By Inderscience Publishers

  • 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

  • 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 ...


  • 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

  • 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

  • Incentives for energy saving homes

    The federal government’s push for green, energy efficient homes is a strong indication of better financing, higher real estate value and faster sales, which is all good news for consumers and the housing industry. To encourage energy conservation in housing, heftier real estate tax credits are being given for solar panels, solar water heaters, geothermal heat pumps, heavy-duty insulation, ...


  • 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

  • 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

  • What energy efficiency type are you?

    By Elisa Wood July 29, 2010  Not so long ago, consumers seemed to like energy efficiency just a little bit more than going to the dentist. Clearly that has changed, as evidenced by the recent run on appliance and home retrofit subsidies in several states. Greens are no longer alone in swooning over front loader washing machines and geothermal heat pumps. But who exactly are these new ...

  • China and US cooperate on building efficiency

    Chu Announces Joint U.S.-China Building Efficiency MOU BEIJING, CHINA - After touring the "America House," a U.S. designed demonstration of cutting edge "zero energy" building technology, U.S. Energy Secretary Steven Chu today announced a new agreement between the U.S. Department of Energy (DOE) and the Chinese Ministry of Urban-Rural Development (MOHURD) to foster collaboration and partnership ...


    By Bio-Microbics, Inc.

  • 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.

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