Potential for geothermal development in Southern Poland

Bujakowski, W.; Barbacki, Antoni

doi:10.1016/j.geothermics.2003.04.001

Cited by 22 publications

(17 citation statements)

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“…The estimation error mainly results from the estimation error of parameter x (assumption of δh ≈ 0 in [3]). …”

Section: 0133 ) ( ) H H T W T T T T R H H Tmentioning

confidence: 99%

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Assessment of possibilities of electricity production in flash geothermal system in Poland

Barbacki

Pająk

2017

geom

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Abstract:An analytical method is described that expresses the specifi c power of a fl ash geothermal power plant with fl ash temperature regarded as a variable. The analysis was carried out for a condensation temperature for fl uid exiting a theoretical turbine and for a given geothermal reservoir temperature. The method is a linear approximation of the established method for optimizing separator pressure. This linear approximation makes it possible to obtain an analytical expression for the optimum fl ash temperature (fi xing the separation pressure) at which the maximal specifi c power is obtained. A discussion arose in Poland during extensive research related to the application of binary systems, HDR (Hot Dry Rock), and EGS (Enhanced Geothermal System) technologies for the production of electricity. This concerned the hypothetical possibility of using geothermal fl ash systems for this purpose. Therefore, the above procedure was applied to Polish geothermal conditions to assess the theoretical possibilities of operating such systems at the reservoir temperatures anticipated in Poland. In the lower Triassic formations in central Poland, there are geothermal resources with temperatures hovering above 130°C. However, low net power values were estimated following the application of the procedure; when combined with the large investment costs involved (the high-temperature resources lie at a depth more than 4000 m), this is not condusive for the effi cient application of such systems. On the other hand, the possible application of binary systems to electricity production in that area is realistic and justifi ed.

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“…The estimation error mainly results from the estimation error of parameter x (assumption of δh ≈ 0 in [3]). …”

Section: 0133 ) ( ) H H T W T T T T R H H Tmentioning

confidence: 99%

“…Systems based on deep hydrothermal resources as well as on shallow groundwater and rock formations (heat pumps) have successfully been exploited [2,3,5,16,19].…”

Section: Introductionmentioning

confidence: 99%

Assessment of possibilities of electricity production in flash geothermal system in Poland

Barbacki

Pająk

2017

geom

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“…Geothermal heat for district heating is of particular interest in the highly populated southwestern part of Luxembourg and the capital of Luxembourg (Figure 11), making up 60% of the total population in 2014 (canton of Esch: 161,000; canton of Luxembourg: 167,000; STATEC 2014). However, since the temperatures are <60°C in the Buntsandstein aquifer, heat pumps have to be used to allow space and district heating (Bujakowski and Barbacki 2004;Líndal 1973). In the warmest and most permeable zones in the southeastern part of the TLE, minimum k f values of 5 × 10 -5 m s -1 are attained for successful exploitation of hydrothermal reservoirs according to Stober Rotliegend In the considered zone of the SELG beneath the upper Alzette valley, the inferred Rotliegend graben below the Buntsandstein aquifer may reach a maximum depth of about 2,000 m in the northeast in the vicinity of the city of Luxembourg and 2,500 m in the southwest in the Luxembourgish-French border region associated with calculated temperatures of about 63°C and 75°C at the base of the graben, respectively.…”

Section: Hydrothermal Reservoirsmentioning

confidence: 99%

Exploration for deep geothermal reservoirs in Luxembourg and the surroundings - perspectives of geothermal energy use

Schintgen

2015

Geotherm Energy

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Background: The aim of this paper is to combine different types of information necessary for a first rather qualitative assessment of deep geothermal reservoirs in the region of Luxembourg. Within the geological framework, the study area encompasses Luxembourg and the surrounding areas of Belgium, Germany, and France. On the one hand, the focus is laid on low-enthalpy hydrothermal reservoirs in Mesozoic aquifers in the Trier-Luxembourg Embayment. On the other hand, petrothermal reservoirs in the Devonian basement of the Ardennes and Eifel regions are considered for exploitation by Enhanced/Engineered Geothermal Systems (EGS). Methods: For geothermal exploration and exploitation purposes, geological, thermal, hydrogeological and structural data are necessary. Results: Among the Mesozoic aquifers, the Buntsandstein aquifer characterized by temperatures of up to 50°C is a suitable hydrothermal reservoir that could be exploited by means of heat pumps or provide direct heat for various applications. The most promising area is the zone of the SE-Luxembourg Graben. The aquifer is the warmest underneath the upper Alzette valley and the limestone plateau in Lorraine, where the Buntsandstein aquifer lies below a thick Mesozoic cover. At the base of an inferred Rotliegend graben in the same area, temperatures of up to 75°C are expected. However, geological and hydraulic conditions are uncertain. In the Lower Devonian basement, thick sandstone-/quartzite-rich formations with temperatures >90°C are expected at depths >3.5 km and likely offer the possibility of direct heat use. The setting of the Südeifel (South Eifel) region, including the Müllerthal region near Echternach, as a tectonically active zone may offer the possibility of deep hydrothermal reservoirs in the fractured Lower Devonian basement. Based on recent data on the structure of the Trier-Luxembourg Basin, the new concept presents the Müllerthal-Südeifel Depression as a Cenozoic tectonic structure that is still mobile and relevant for geothermal exploration. Conslusion: Beyond direct use of geothermal heat, the expected modest temperatures at 5 km depth (about 120°C) and increased permeability by EGS in the quartzite-rich Lochkovian could prospectively enable combined geothermal heat production and power generation in Luxembourg and the western realm of the Eifel region.

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“…Water from the Podhale Basin (GT-1 well), the most favourable geothermal field, was tested [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Desalination of geothermal waters using a hybrid UF-RO process. Part II: Membrane scaling after pilot-scale tests

Tomaszewska

Bodzek

2013

Desalination

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Potential for geothermal development in Southern Poland

Cited by 22 publications

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Assessment of possibilities of electricity production in flash geothermal system in Poland

Assessment of possibilities of electricity production in flash geothermal system in Poland

Exploration for deep geothermal reservoirs in Luxembourg and the surroundings - perspectives of geothermal energy use

Desalination of geothermal waters using a hybrid UF-RO process. Part II: Membrane scaling after pilot-scale tests

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