{"id":6325,"date":"2024-04-10T13:37:38","date_gmt":"2024-04-10T10:37:38","guid":{"rendered":"https:\/\/viitorulenergiei.ro\/?p=6325"},"modified":"2024-05-29T11:42:52","modified_gmt":"2024-05-29T08:42:52","slug":"energie-din-interiorul-pamantului-intrebari-si-raspunsuri-despre-energia-geotermala","status":"publish","type":"post","link":"https:\/\/viitorulenergiei.ro\/en\/energie-din-interiorul-pamantului-intrebari-si-raspunsuri-despre-energia-geotermala\/","title":{"rendered":"Energy from within the Earth. Questions and answers about geothermal energy."},"content":{"rendered":"
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The earth - through the hot rocks and fluids in the earth's crust - is a source of renewable energy that can be used for heating and electricity generation. The use of high-temperature water from aquifers is now more widely known to the general public, partly because there are areas in Romania where heating is already being carried out using this technology, namely the municipalities of Oradea and Beiu\u0219. Beiu\u0219 is the town with the lowest heating prices in Romania. In today's article, we will briefly talk about another system of geothermal exploitation, the one called <\/em>with closed loop<\/strong><\/em> (<\/em>closed-loop<\/strong><\/em>), a promising technology that exploits the high temperatures of the rock layers in the earth's crust.<\/em><\/p>\n

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    1. What does the closed-loop system involve?<\/strong><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n

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      The use of the closed-loop system to obtain heat for heating and electricity generation requires:<\/p>\n

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        1. Deep drilling.<\/strong> These are very deep, several thousand metres, near the magmatic rock layer, where temperatures reach around 300\u00b0C.<\/li>\n
        2. Introduction of pipelines<\/strong> made of a thermally conductive material in the ground.<\/li>\n
        3. Ground heat capture.<\/strong> Similar to a radiator through which water is recirculated, the piping system captures heat and brings it to the surface as a hot liquid, which is then converted in the CHP plant into both electricity and heat.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n

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          Image source: energy.gov<\/a><\/strong><\/p>\n

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            1. How is it different from the traditional open-loop system?<\/strong><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n

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              Simply put, the open-loop system works like this:<\/p>\n

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                1. Groundwater is taken from a nearby aquifer*<\/strong> (it is extracted from an underground water deposit at high temperatures).<\/li>\n
                2. East water directed to a geothermal heat pump<\/strong> indoor.<\/li>\n
                3. East water evacuated<\/strong> back through a well or is directed to a pond or drainage ditch, according to local regulations.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n

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                  This system has 2 limitations, which the closed loop system circumvents:<\/p>\n

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