heat pump Articles

  • Ground Source Heat Pumps

    In many buildings Ground Source Heat Pumps (GSHPs) provide an efficient solution for heating and cooling. Using low temperature latent heat which exists naturally below ground, GSHPs provide solutions by harvesting and transferring this energy for the benefit of the built environment. It is important to understand the feasibility of GSHP prior to designing a system. This guidance note has been ...


    By WSP | Parsons Brinckerhoff

  • Pumps for synthetic heat-transfer liquids

    As soon as the temperature in a heat-transfer system becomes too high for water, a plant operator must choose between petroleum-based or synthetic oils as the heat-transfer liquid. When modern petroleum oils are used, systems with feed temperatures up to about 300 °C can stay in service for their entire service life with one filling and with virtually no maintenance. Once feed temperatures ...


    By ALLWEILER GmbH

  • Ground Source Heat Pump installed in eco house

    This case study looks at a ground source heat pump being installed in London. A Ground Source Heat Pump was chosen as a sustainable and energy efficient way to provide 100% space heating and hot water for this 550m2 new build eco-house in East London. A Heat Recovery Mechanical Ventilation System was also utilised, which, together with Solar Thermal hot water and LED lighting give this stunning ...


    By Ground Sun

  • 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 ...

  • Comparative performance analysis for endoreversible simple air heat pump cycles considering ecological, exergetic efficiency and heating load objectives

    The performance analysis and optimisation of endoreversible simple air heat pump with constant-temperature heat reservoirs is carried out by using finite-time thermodynamics. The expressions of the heating load, the exergetic efficiency and the ecological function of the cycle are derived. The influences of the pressure ratio of the compressor and the allocation of heat exchanger inventory on the ...


    By Inderscience Publishers

  • 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

  • Thermodynamic analysis of a hybrid gas turbine/thermoacoustic heat pump/refrigeration engine

    Possible performance enhancement of small gas turbine power plants through the application of thermoacoustic systems is examined. The thermoacoustic subsystem is powered only by the waste heat of the gas turbine. Two different gas turbine configurations are considered: a Thermoacoustic refrigerator assisted gas turbine (TRG) and a Combined thermoacoustic heat pump and refrigeration assisted gas ...


    By Inderscience Publishers

  • Heat recovery from wastewater

    Heat recovery from gray water is particularly important in water-intensive industries such as pulp and paper plants, dairies and breweries. Rather than flushing used water down the drain, consider whether a heat exchanging system can help you put that energy to work in your process again. Most plant operators arc aware of the need to save money and reduce the environmental impact of their plant ...


    By DDI Heat Exchangers Inc.

  • 24kW Ground Source Heat Pump In Essex - Case Study

    The space heating and hot water for this property was previously done by an oil boiler. The client was considering a ground source heat pump in order to lower running costs and benefit from tariff payments under the Renewable Heat Incentive (RHI). Better Planet carried out a room by room heat loss calculation. This is required in order to size the heat pump ...


  • Harrogate Borough Council - Ground Source Heat Pump case study

    Customer: Harrogate Borough Council Location: Copt Ewich Heating System: Ground Source Heat Pump Harrogate Borough Council installed 94 heat pumps in 2006 as a test project in a number of sites in Harrogate. Eight of these were fitted in a scheme at Copt Ewick. On one of these systems two Vortexs’ were fitted one on the ground loop and one ...


    By Vortex Energy Saver

  • 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

  • Combined Heat and Power – Questions and Answers

     1. What are the benefits of CHP for business?   combined heat and power (CHP) is a well-proven technology, recognised worldwide as a cleaner alternative to traditional centralised generation. Its long-term future in the global energy markets is secured by CHP's ability to provide a multitude of financial, ...


    By ENER-G

  • Getting an air source heat pump from Better Planet – from first discussion to finished project

    Initial contact The initial contact is often on the phone and we try to establish if an air source heat pump makes sense from a financial and technical point of view. Heat pumps makes sense for most new built projects. For retrofits, heat pumps makes most sense for properties not connected to the gas grid. If you are connected to the gas grid, ...


  • Harbin daoli - District Heating, China case study

    In cooperation with ABB A/S Skovlunde and APV A/S Kolding DESMI A/S replaced large parts of the heating network in Harbin in China. Daoli is one of the seven districts of Harbin, the largest city in North East China with approx. 11 million inhabitants. It is known for its bitterly cold winters and is often called the “Ice City” – so therefore the city welcomed this ...


    By DESMI A/S

  • Steam Heater Pulp Stock Heating Paper Mill

    After upgrading its bleach plant in 1987 to accommodate a two-stage elemental chlorine-free (ECF) bleach sequence, Cross Pointe Paper (now Flambeau River Papers LLC), Flambeau mill in Park Falls, Wis. subsequently added a totally chlorinefree (TCF) sequence in response to market demand. The TCF sequence, however, required heating, rather than cooling, of the mill's mediumconsistency stock during ...


    By Komax Systems, 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

  • First industrial application of an open absorption cycle for heat transformation in a district-heating network

    The first plant for high temperature utilisation of higher heating value was realised under industrial conditions in a combined heat and power plant. The technology results in an increased heat recovery temperature and a stronger dehumidification of the flue gas. Beyond that, the use of large solution flow within an adiabatic absorber enables to combine gas scrubbing and dehumidifying. Economic ...


    By Inderscience Publishers

  • Energy sustainable development through energy efficient heating devices and buildings

    Energy devices and buildings are sustainable if, when they operate, they use sustainable (renewable and refuse) energy and generate nega-energy. This paper covers three research examples of this type of sustainability: (1) use of air-to-earth heat exchangers, (2) computer control of heating and cooling of the building (via heat pumps and heat-recovery devices), and (3) design control of energy ...


    By Inderscience Publishers

  • Heat recovery and energy efficiency, improves profitability and reduces CO footprint

    Using latest technology in combustion of oil and gas can provide significant savings in overall energy consumption. Modern oxygen control that compensates changes in ambient temperature and fuel qualities can increase energy efficiency up to 3%. By adding the usage of hot combustion air another 2-3% can be saved. Modern burner technology without mechanical linkage, operating with accurate ...


    By Oilon Oy

  • Case-study - Utilising waste heat for water production and climate control

    Water purification is needed to produce high quality water for consumption, agriculture and industrial needs. Conventional water treatment processes, like distillation and reverse osmosis, consume vast amounts of energy. However, there is a large potential for significant reductions in energy consumption and CO2 emissions in this sector. It can be achieved by the exploitation of waste heat for ...


    By Climate-KIC

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