Geoinformatic background of geothermal energy utilization and its applications in East Hungary

Abstract

Powerful geothermal energy utilisation requires geoinformatic tools from potential surveying through the designing and setting of geothermal systems to certain operational tasks. However, practical data processing strongly depends on the elaboration of basic data and information, the type of the geothermal energy harvesting system and the character of the calculation demonstrated by case studies from East Hungary, in addition the usability of the resulted maps are also presented. Besides their usability for investors these maps could be refined in the location of the development before hydraulic/heat transport modelling.

Subregion-Scale Geothermal Delineation Based on Image Analysis Using Reflection Seismology and Well Data with an Outlook for Land Use

“…Based on the results of the study, the CLC database can provide spatial information on areas where geothermal energy utilisation is preferred or prohibited. Application of CLC or other land-use databases seems to be useful for both thermal water-based geothermal energy utilisation and shallow geothermal heat pump systems [40,[57][58][59][60].…”

“…The geothermal gradient can be determined from these data, and the official average geothermal gradient values are also included in the thermal well cadastre [48]. Based on the measured data and previous studies [7,38], the vertical heat transport process in the study area is dominated by thermal conduction, with a linear temperature gradient. Water level and pressure tests for the wells indicate that the area is in a gravity regime, with slight overpressure in the layers due to gas content and compression, which decreases over time during water production.…”

“…However, those negative impacts could be mitigated and avoided by applying the results of complex studies and spatial planning for a more sustainable geothermal energy resource management based on detailed geological and hydrogeological models. Therefore, we consider reservoir descriptions based on the widest possible seismic and deep borehole geophysical measurements necessary [38][39][40][41].…”

75 localities with geothermal water in Bihor County (Romania) and the potential for the sustainability of balneology

“…Taking into account the favourable factors as well as the unfavourable ones, the extraction and treatment of thermal water with the aim of balneological valorization, would become feasible for a sustainable operation (Buday, 2012;Bódi et al, 2015;Buday et al, 2015) if it achieves the protection of used polluting reservoirs, the reduction of dependence on various related economic services, the minimization of the impact on the environment. The example from Hajdúszoboszló and Debrecen in Hungary (Buday et al, 2015) is worth following because it is a very diversified balneological valorisation supported by social insurance: chronic joint inflammations, degenerative joint problems, various acute degenerative inflammatory diseases of the spine vertebral, inflammation of the nervous system, treatment for any paralysis, acute muscle pain, rehabilitation from general and sports injuries, certain locomotor disorders, chronic gynaecological problems, infertility, acute skin problems, constriction of blood vessels, osteoporosis. Balneotherapy, as a method of treatment in medicine based on geothermal waters, has reached a level of functioning in Hungary characterized by efficiency and sustainability, as demonstrated by a synthesis based on 122 studies of this profile (Bender et al, 2014).…”

Fossil energy reduction for heating and cooling of buildings using shallow geothermal integrated energy systems – a comprehensive review

“…The SGE potential mapping has been carried out for different countries in the Europe (global north) such as North-Western Italy [57][58][59], Southern Italy [60], Spain [61], Switzerland [62], Southern Switzerland [63], Germany [64], South-West Germany [65], Sweden [66], France [67], Poland [68], Croatia [69], Slovenia [70], Finland [71], Belgium [72], Denmark [73], Ireland [74], Cyprus [75], Turkey [76], Serbia [77] and Hungary [78]. The GSHP system potential in Barcelona, Spain, has been investigated with groundwater flow using the GIS technique for both open-loop and closed systems [61].…”