Abstract
Mogućnosti podzemnog inženjerstva u iskorištavanju plitke geotermalne energije
Highlights
The term "geothermal energy" denotes thermal energy that is generated and stored in the Earth
A more detailed and thorough description will be given for shallow geothermal resources, as these resources are of greater significance for underground engineering
The geothermal energy is a renewable source of energy that presents numerous advantages when compared to traditional sources of energy
Summary
The term "geothermal energy" denotes thermal energy that is generated and stored in the Earth. Initial costs of installing a geothermal system for the exploitation of shallow geothermal resources exceed by 20 to 50 % the initial costs of installing conventional systems [5], the period of return of initial investment (payback period) amounts to no more than 3 to 8 years in EU countries [6]. Shallow exploitation of geothermal energy is based on the use of geothermal potential of soil, rock, or groundwater, which are in direct contact with elements of underground structures. Such structures are primarily constructed to fulfil their basic roles (ensure bearing capacity of soil/rock, prevent soil collapse, ensure stability of underground openings in soil/rock, etc.), the use of these elements as integral parts of geothermal systems adds an additional significant dimension to their primary functions
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