{"id":950218,"date":"2026-08-02T11:45:40","date_gmt":"2026-08-02T10:45:40","guid":{"rendered":"https:\/\/www.geo-zs.si\/?page_id=950218"},"modified":"2026-08-02T12:04:08","modified_gmt":"2026-08-02T11:04:08","slug":"plitva-geotermalna-energija","status":"publish","type":"page","link":"https:\/\/www.geo-zs.si\/en\/plitva-geotermalna-energija\/","title":{"rendered":"Shallow geothermal energy"},"content":{"rendered":"
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02 SHALLOW GEOTHERMAL ENERGY \u2013 INNOVATIVE APPROACHES TO THE SUSTAINABLE USE OF GEOTHERMAL ENERGY IN URBAN AREAS<\/strong>

\nBeneath every town, every park and every parking lot lies a source of energy \u2013 the Earth\u2019s heat, stored in the rocks and fluids beneath our feet. The average temperature of the ground and groundwater in Slovenia is between 8 and 15 \u00b0C. We do not need thermal water or any special geological structures. At depths of more than 10 metres, the ground temperature remains stable and then rises gradually, making it suitable for heating in winter or cooling in summer. This is shallow geothermal energy, available almost everywhere.<\/strong>\n<\/p><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t<\/section>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t<\/section>\r\n\t\t\t\t\t\t

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HOW DO WE CAPTURE IT?<\/strong><\/p>

Closed systems <\/strong>\u2012 horizontal collectors and vertical geothermal probes <\/strong><\/p>

Closed systems with horizontal collectors or vertical geothermal probes do not require groundwater, although its presence significantly increases the system\u2019s capacity.<\/p>

Open systems <\/strong>\u2012 boreholes and wells <\/strong><\/p>

We extract heat from groundwater (for heating) or add heat to it (for cooling). We need a sufficient quantity of water in the aquifer, which we return through a second borehole after use.<\/p>

WHAT ARE WE RESEARCHING? <\/strong><\/p>

The feasibility and capacity of shallow geothermal energy systems depend primarily on the geology and the presence of groundwater. We use geothermal and hydrogeological exploration techniques to determine:<\/p>

  • potential for using shallow geothermal energy for heating and cooling buildings,<\/li>
  • how the thermal conductivity, thermal resistance and thermal diffusivity of the ground affect its ability to conduct or store heat underground,<\/li>
  • the impact of groundwater on the capacity and efficiency of ground heat exchangers, and<\/li>
  • the impact of utilisation on changes in subsurface temperature, ecosystems, and the mobilisation of pollutants in soil and groundwater.<\/li><\/ul>

    WHAT RESEARCH METHODS AND EQUIPMENT DO WE USE? <\/strong><\/p>

    Thermal Response Test <\/strong><\/p>

    Determination of the effective thermal conductivity of the subsurface along a ground heat exchanger.<\/p>

    \"\"<\/p>

    Thermal Response Test<\/strong><\/p>

    The continuous, high-resolution determination of subsurface thermal conductivities along a ground heat exchanger, and identification of zones with groundwater flow that enhances the system\u2019s performance.<\/p>

    \"\"<\/p>

    THE IMPACT OF URBAN AREAS ON THE USE OF SHALLOW GEOTHERMAL ENERGY <\/strong><\/p>

    The ground temperature beneath urbanised areas is a few degrees higher than in the surrounding areas, leading to the urban heat island effect. The higher density of buildings and paved surfaces severely restricts the infiltration of rainfall. In addition, underground infrastructure, such as underground car parks, cellars and sewers, emits waste heat. Shallow geothermal energy can be used for heating and cooling, and its use can be planned to mitigate the subsurface urban heat island effect.<\/p>

    WHY IS OUR RESEARCH IMPORTANT? <\/strong><\/p>

    • Data on the effective thermal conductivity of the ground enables accurate sizing of new shallow geothermal energy systems.<\/li>
    • Given the funds available for the investment, we can make the best possible use of natural resources, prevent undesirable impacts on neighbouring systems, and minimise the long-term impact on the subsurface and the environment.<\/li>
    • Simulating the impacts of existing and planned geothermal users forms the basis for rational and sustainable use, particularly where groundwater is used in open systems.<\/li>
    • Publicly available geothermal data enables future investors to implement new systems more quickly and at lower cost.<\/li><\/ul>
      \"\"<\/div>

      Suitability for borehole heat exchangers use in Ljubljana (results of the GeoPLASMA-CE project)<\/span><\/i><\/p>

      Authors: doc. dr. Nina Rman, dr. Mitja Jan\u017ea, dr. Simona Adrinek, Karlo Borko<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\r\n\t\t\t<\/div>\r\n\t\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

      02 PLITVA GEOTERMALNA ENERGIJA \u2013 INOVATIVNI PRISTOPI ZA TRAJNOSTNO RABO ZEMLJINE TOPLOTE NA URBANIH OBMO\u010cJIH Pod vsakim mestom, pod vsakim parkom in vsakim parkiri\u0161\u010dem se skriva vir energije \u2012 Zemljina toplota, ki se nahaja v kamninah in teko\u010dinah pod na\u0161imi nogami. Povpre\u010dna temperatura tal in podzemne vode v Sloveniji je med 8 in 15 \u00b0C. […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"rs_blank_template":"","rs_page_bg_color":"","slide_template_v7":"","footnotes":""},"class_list":["post-950218","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nPlitva geotermalna energija - GeoZS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.geo-zs.si\/en\/plitva-geotermalna-energija\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Plitva geotermalna energija - GeoZS\" \/>\n<meta property=\"og:description\" content=\"02 PLITVA GEOTERMALNA ENERGIJA \u2013 INOVATIVNI PRISTOPI ZA TRAJNOSTNO RABO ZEMLJINE TOPLOTE NA URBANIH OBMO\u010cJIH Pod vsakim mestom, pod vsakim parkom in vsakim parkiri\u0161\u010dem se skriva vir energije \u2012 Zemljina toplota, ki se nahaja v kamninah in teko\u010dinah pod na\u0161imi nogami. 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