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Showing result 6 - 10 of 10 essays matching the above criteria.

  1. 6. Flow Paths in the Húsmúli Reinjection Zone, Iceland

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Sigrún Tómasdóttir; [2018]
    Keywords : Húsmúli; Hellisheiði Power Plant; geothermal reinjection; tracer tests; numerical modeling; Húsmúli; Hellisheiði kraftverk; geotermisk injektion; spårtest; numerisk modellering;

    Abstract : Reinjection of spent geothermal fluids has become common practise in geothermal power plants. Reinjection can, despite being mostly beneficial, have unwanted effects such as cooling of nearby production wells and injection-induced earthquakes. READ MORE

  3. 7. Evaluation of "GIN method" at Two fans of City banan project in Stockholm

    University essay from KTH/Jord- och bergmekanik

    Author : Mehran Neshati Sani; [2015]
    Keywords : grouting; GIN method; cement; jacking; penetration; pressure; volume intake;

    Abstract : An underground installation with too much inflow can lead to dangerous consequences for around environment, therefore a well-sealed construction results in appropriate inflows. To mitigate movement of ground water table in underground constructions, it is necessary to seal the rock mass by grout injection. READ MORE

  4. 8. Experimental Evaluation of the Effects of Dynamic Pressure on Improving Cement-based Grout Penetrability : A study performed with the short slot

    University essay from KTH/Jord- och bergmekanik

    Author : Anastasios Mentesidis; [2015]
    Keywords : penetrability; filtration; erosion; cement-based grout; variable dynamic grouting;

    Abstract : The increasing need for watertight underground works, such as tunnel excavations, has sparked an interest in a number of research studies with grout penetrability being the focus. The research has so far contributed to a deeper understanding regarding the assessment of a successful grouting operation from different perspectives such as choice of equipment, material properties, phase planning and performance. READ MORE

  5. 9. Geotermisk fjärrvärme i Gunsta

    University essay from SLU/Dept. of Energy and Technology

    Author : Caroline Krouthén; Andreas Lundgren; Per Mandfloen; Karl-Oskar Sandberg; Johanna Sjöberg-Högerås; Johan Thorell; Svante Wärnsberg Monie; [2014]
    Keywords : geotermi; geotermisk energi; fjärrvärme; Gunsta; förnybar; värmekälla; värmeproduktion;

    Abstract : Gunsta is situated about 10 km east of Uppsala. Today there are plans to establish 1000 new households in Gunsta before year 2030. The required energy for heating houses and water would be distributed via a district heating system, which also includes 200 existing residences. The annual required energy, according to this study, would be 16. READ MORE

  6. 10. Numerical analysis of a distributed thermal response test on a U-pipe borehole heat exchanger

    University essay from KTH/Tillämpad termodynamik och kylteknik

    Author : Cécile MALLET; [2013]
    Keywords : ;

    Abstract : Ground Source Heat Pumps (GSHPs) are relevant systems for space heating and cooling, very common in Sweden since 1970s. More than one million heat pumps have been sold by Swedish companies. READ MORE