atlas of the mine water geothermal potential in the czech ... · overall evaluation of the mine...

Slide No. 0. © 2011 ISATech ltd.. Atlas of the Mine Water Geothermal Potential in the Czech Republic

ISATech ltd.®

Industrial Safety Assessment Technicians

Petr Novák1*, Jana Kasíková1, Michal Vaněček1,

Milan Brož2, Jan Uhlík3, Martin Šindelář4, Jiří Záruba4

1* ISATech ltd., [email protected] 2 IRSM Czech Academy of Science v.v.i.

3 PROGEO ltd.

4 ARCADIS Geotechnika corp.

Atlas of the Mine Water

Geothermal Potential

in the Czech Republic


Content

Principles

Utilisation of the Mine Water Geothermal Potential

Evaluations of the Mine Water Geothermal Potential in Large Areas

Mining in the Czech Republic

Research of Using the Energy Potential of Mine Waters

Atlas of the Mine Water Geothermal Potential in the Czech Republic

Mine Water Potential in the Czech Republic

Acknowledgement


Principles

Minewater project (2008): Mine

water as a Renewable Energy

Resource :An information guide

based on the Minewater Project and

the experiences at pilot locations in

Midlothian and Heerlen.

Mines, both active and abandoned, might produce exceeding amounts of mine water. Like in any other low enthalpy

geothermal application temperature of the mine water is depth dependent and generally rather stable in time. Warm

mine water could be pumped from deeper horizons for heating while cold water from shallow parts of mines is helpful

for cooling during summer. Heat exchangers and pumps are being utilized for heat extraction mostly.


Mine Water has already been utilized as an energy source for heating (and cooling) worldwide. The best known are

probably the Springhill Geothermal Industrial Park in Springhill, Nova Scotia and the Mijnwater Project in Heerlen,

Nederland. Considerably smaller heating systems are in use in the Czech Republic as well. For example mine

water from the Jeremenko mine, Ostrava and Svornost mine, Jachymov provide heating for mining facilities.

Utilisation of the Mine Water

Geothermal Potential

example of facilities heated and cooled by mine water THE SVORNOST

MINE HEAT PUMP HEERLEN, NEDERLAND

www.mijn-water.nl www.town.springhill.ns.ca

SPRINGHILL, NOVA SCOTIA


Evaluations of the Mine Water Geothermal Potential in Large Areas

SHAWFAIR MINEWATER

PROJECT2 US COAL MINING REGION1 GEOTHERMAL POTENTIAL IN CANADIAN

ACTIVE AND ABANDONED MINES3

1 Ackman T. E. a Watzlaf G. (2007): U.S. Mining Regions –The Saudia Arabia of Geothermal Energy. 10thAnnual Electric Utilities Environmental Conference January 21 –24, The

Westin La Paloma Tucson, Arizona 2 Dickson J. (2004): SHAWFAIR MINEWATER PROJECT SCOTTISH NATIONAL MINEWATER POTENTIAL STUDY. Midlothian Council National Minewater Potential Study 3 Hassani F. P., Radziszewski P. H. , Baliga B. R., Ghoreishi A. (2009): GEOTHERMAL ENERGY POTENTIAL IN CANADIAN ACTIVE AND ABANDONED MINES. McGill

University, Montreal, Canada.

Reports and paper deal with local utilization of mine water mostly. Both hypothetical and concrete solutions are

being suggested for local conditions. Nevertheless energy conception making process demands large area

evaluation. Unfortunately qualitative and quantitative areal assessments are however rare so far. Following pictures

represent some of these evaluation.


Mining in the Czech Republic

www.geofond.cz

Long history of mining hand in hand with high demand for mineral resources during second half of the twentieth

century left more than 14 thousands registered mines in the Czech republic (see map of undermined areas bellow).

Undoubtedly number of the mines could provide enough mine water to support a heating-cooling system of various

scale. Some of the mines form systems or large field with enormous mine water capacity. These areas seem to be

promising even for large scale mine water geothermal heating system like in Springhill and Heerlen.


Research of Using

the Energy Potential of Mine Waters

The Czech Republic Ministry of Industry and Trade grant encouraged the use of abandoned mines as geothermal

energy sources. Project called „Research of Using the Energy Potential of Mine Waters“ (code 2A-2TP1/055)

studied various aspects of utilization of mine water as a low enthalpy geothermal source. The project research

team consisted of three private companies (Arcadis Geotechnika corp., ISATech ltd. and Progeo ltd.) and Czech

Academy of Science (Institute of Rock Structure and Mechanics).

Project outputs included

state of art reviews

mathematical modeling of flooded mine environment

overall evaluation of the mine water geothermal potential in the Czech Republic

SWOT analysis

localized mathematical models

feasibility studies for selected localities

localized mine water chemistry and remediation study

tailings remediation and reuse technical report


Atlas of the Mine Water Geothermal

Potential in the Czech Republic Overall evaluation of the mine water geothermal potential in the Czech Republic was compiled into an Atlas of the

Mine Water Geothermal Potential in the Czech Republic. Major mine water geothermal sites were targeted mostly.

Size of mine, mine water capacity and information availability were the key factors. Archives both national and

private, papers, review publications, maps, year books and wide range of technical reports focused on mine

operation and/or closure, mine hydrogeology and/or geochemistry, mine water remediation and contamination were

searched to attain data. Unsurprisingly the input data were highly inhomogeneous. Subject, accuracy and time of

observation were the main variables.

At the end attained data

allowed correct description

of 150 mines and mine

systems in 55 areas. Ore

(red), nonmetallic (blue)

and coal (black) mines

were differed because of

specific behavior of both

mine environment and

water.



Potential in the Czech Republic (sequel 1)

Generally two approaches could be employed to characterize geothermal potential of water in a specific mine.

Static pool thermal potential considers total amount of water stored in the mine while dynamic describes

sustainable discharge. Relation between the potentials is not straight therefore logically the dynamic potential was

selected as a principal characteristics for the atlas. Due to unification of the atlas provided information several

generalisation had to be accepted. Open loop system was considered to neglect an influence of structure and

condition of a mine and a temperature drop in the aquifer. Also neither depth nor thermal stratification was not

studied in the mines. Unified 5K decrease based on actual low enthalpy heat pump best practice was adopted

instead. The dynamic pool thermal potential of mine water was calculated using following formula:

Qd = t.g.c.∆T where Qd stands for annual sum of dynamic pool thermal potential, q for sustainable discharge, t for time, T for

temperature drop and c for specific heat capacity of water. Mine water sources (mines and mine systems) were

categorized according to the annual sum of dynamic pool thermal potential (t = 1 year). Categories were set up due

to floor space theoretically possible heat by calculated thermal potential. Upper limit for A class of buildings (51 kW

per m2 and year) was applied.

Source category Colour in

the Atlas

Dynamic pool

thermal potential [m2]

Theoretical heated

floor space [MWh.year-1]

unimportant grey up to 6.12 up 120

not significant blue 6.12 – 51 120 – 1000

significant red 51 – 1275 1000 - 25000

highly significant yellow over 1275 over 25000


General part of the atlas introduces topic and sets up the research methodology. Site criterion apparatus, data and

map sources, calculations, categorization, accuracy and possible errors are defined. In a map part of the atlas

maps of different scale were used to provide both general and local information. Base maps were compiled from

various WMS sources using Quantum GIS. New layer describing annual sum of dynamic pool thermal potential of

selected mines, mine systems and areas was implemented. All 55 areas were described individually. Area

description includes general map of an area and/or detail maps in scale 1 : 50000. Area calculated annual sum of

dynamic pool thermal potential. Mining history, geology, hydrogeology and geochemistry of mine water is also

given.


Potential in the Czech Republic (sequel 2)

GENERAL MAP OF AN AREA DETAIL 1 : 50000 MAP


In the Czech Republic 37 promising sites with highly significant mine water geothermal potential over 1275 MWh

per year were identified (see table bellow). Total annual geothermal potential of mine water in the Czech Republic

was calculated 502.5 MWh or 1.8 PJ. During an average heating season (242 days a year) mine water can provide

333.2 MWh or 1.2 PJ of heat. Theoretically 6.5 million square meters of floor space could be heated in the Czech

Republic. Thus mine water can provide additional 15% of heat comparing to low enthalpy geothermal potential

estimated in the Czech national energy conception published in 2010. Main obstacles are mine water chemistry

and in some cases also radioactivity. Tailings and clots might complicate both heat pump operation and efficiency.

Geothermal utilisation of mine water has to be plan and proceed hand in hand with remediation.

Mine Water Potential in the Czech Republic

highly significant sources Qd (MWh.year-1) highly significant sources Qd (MWh.year-1)

Abertamy mine system 7358 Moldava mine system 1527

Bližná mine system 1718 Nučice mine system 3054

Cínovec mine systém 2115 Ostrava-Karvina mining area 29424

Domoradice mine system 1563 Plzeň mining area 69537

Hamr mine 20721 Potůčky mine system 5427

Harrachov mine system 2495 Příbram mining area 4047

Horní Benešov mine system 3679 Rakovnik mine system 3284

Horní Slavkov mine system 3771 Rosice-Oslavany mining area 7174

Dubňany mine system 14177 Rožná mine system 8793

Jáchymov 21367 Rotava mine system 4746

Kyjov mine system 6070 North Bohemian Coal Area – the František mine 10762

Kladno mining area 47830 North Bohemian Coal Area – the Kohinoor mine 13540

Nové Strašecí mine systém 14618 East Bohemian Coal Area – the Radvanice mine system 7583

Kobeřice mine system 4599 East Bohemian Coal Area – the Rtyně and Ida mine system 18442

Krákořice mine system 1878 East Bohemian Coal Area – the Žacléř mine system 5833

Krupka mine system 5150 East Bohemian Coal Area – the Malé Svatoňovice mine system 14578

Medlov mining area 3054 Zlaté Hory mining area 18304

Měděnec mine system 7027 Zlatý Kopec mine 2300

Mirošov mine system 6255


This project was supported by Ministry of Trade and Industry of the Czech Republic (2A2TP1/055). We

are grateful to following companies and individuals for their invaluable help in data acquisition: Aquatest

corp., Petr Brůček, Miroslav Černík, DIAMO s.e., František Dudek, Jiří Fiedler, Geomedia ltd., Radek

Hanus, Pavel Koscielniak, Jan Kotris, Karel Lusk, PKÚ s.e., Jiří Pöpperl, Michal Stibitz, SUAS a.s.,

State Mining Authority, Marta Štamberová, T. G. Masaryk Water Research Institute, Timex Zdice ltd.,

Tomáš Váňa and Jiří Váša.

Acknowledgement


Thank you for your attention

if you are looking for additional information

please contact us at [email protected]

ISATech ltd.®

Industrial Safety Assessment Technicians

atlas of the mine water geothermal potential in the czech ... · overall evaluation of the mine...

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