Sökning: "ground-source"

Visar resultat 6 - 10 av 27 avhandlingar innehållade ordet ground-source.

  1. 6. Design of ground source heat pump systems. Thermal modelling and evaluation of boreholes

    Författare :Saqib Javed; Avdelningen för Installations- och klimatiseringslära; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  3. 7. Reduction of prime energy consumption by ground source heat pumps in a warmer world

    Författare :Mohamad Kharseh; Jeff Spitler; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vattenteknik; Water Resources Engineering;

    Sammanfattning : Much of the energy used worldwide is supplied by fossil fuels (~85 %) while renewable energy sources supply approximately 6 %. A sustainable future urgently requires worldwide efforts to reduce primary energy consumption and increase use of renewable energy sources. LÄS MER

  4. 8. Thermal modelling and evaluation of borehole heat transfer

    Författare :Saqib Javed; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ground source heat pump; fluid temperature; borehole; short-term; thermal response test; groundwater-filled; optimization; load aggregation; simulation; recovery; step-response; long-term; ground heat exchanger; times; design; ground-coupled;

    Sammanfattning : The use of ground source heat pump systems to provide heating and cooling inbuildings has increased greatly in the last decade or so. These systems have a highpotential for energy efficiency, which has environmental and economicadvantages. LÄS MER

  5. 9. Improvements of U-pipe Borehole Heat Exchangers

    Författare :José Acuña; Björn Palm; Signhild Gehlin; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Borehole Heat Exchanger; Distributed Thermal Response Test; Ground Source Heat Pumps; Environmental engineering; Miljöteknik; Earth sciences; Geovetenskap; Civil engineering and architecture; Samhällsbyggnadsteknik och arkitektur;

    Sammanfattning : The sales of Ground Source Heat Pumps in Sweden and many other countries are having a rapid growth in the last decade. Today, there are approximately 360 000 systems installed in Sweden, with a growing rate of about 30 000 installations per year. LÄS MER

  7. 10. Utilization of a GSHP System in a DHC Network : modeling and optimization

    Författare :Anjan Rao Puttige; Thomas Olofsson; Ronny Östin; Staffan Andersson; Javed Saqib; Umeå universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ground source heat pump; district heating and cooling; optimization; borehole heat exchanger; artificial neural network; hybrid model; field measurements; calibration; heat pumps; prosumer;

    Sammanfattning : The ground source heat pumps (GSHPs) of customers connected to the district heating and cooling (DHC) network can benefit both the customer and the energy company. However, operating the GSHP to minimize the cost of providing heating and cooling to the customer while ensuring the long-term stability of the ground temperature is a challenge. LÄS MER