Green Gas DPB a.s

Paskov, Czech Republic

Green Gas DPB a.s

Paskov, Czech Republic
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Kuchovsky T.,Masaryk University | Ricka A.,Masaryk University | Grycz D.,Green Gas DPB a.s.
Mine Water and the Environment | Year: 2017

The Rosice-Oslavany coal-mining district, which spans 22 km2, is a typical example of a historical mining site where mine works flooded after closure. Mining lasted for 240 years, with shafts reaching depths of 1500 m. A single drainage adit dewatered the mine workings, which were all hydraulically connected. Mine water discharges have stabilized at an average value of 50‒60 L/s, significantly exceeding the projected discharge value of 30 L/s. Groundwater flow was modeled to understand the discrepancy between the expected and observed discharges. Comparison of modeling scenarios have confirmed the importance of the hydraulic connection of the mine workings to overlying streams; stream seepage was identified as the key source of the influent mine water. The measured and simulated mine water discharges correlated well with the seepage characteristics of the surface streams. © 2017 Springer-Verlag Berlin Heidelberg

Weniger P.,RWTH Aachen | Francu J.,Czech Geological Survey | Krooss B.M.,RWTH Aachen | Buzek F.,Czech Geological Survey | And 2 more authors.
Organic Geochemistry | Year: 2012

Gas associated with Carboniferous coal seams and younger Miocene sediments in the SW Upper Silesian Basin in Czech Republic shows wide compositional variation. Coal-related gas extracted from cross-measure degassing boreholes, as well as gas released during canister desorption of coal samples from three different mines was analyzed to evaluate the genetic origin and the influence of sorption/desorption processes on the gas composition. Analyses comprised the compositional and stable carbon and isotope composition of coal-related gases. The isotopic composition of gas from cross-measure boreholes indicates thermogenic origin in the southern part of the basin and microbial CO2 reduction and mixed type origin in the northern part. Gas from canister desorption shows similar origins, but larger compositional and isotopic variation. No consistent isotopic fractionation due to desorption could be observed. Differences in geochemical composition of thermogenic gases could indicate a contribution of gas migrated from deeper formations below the Carpathian overthrust. © 2012 Elsevier Ltd.

Bujok P.,VSB - Technical University of Ostrava | Klempa M.,VSB - Technical University of Ostrava | Porzer M.,VSB - Technical University of Ostrava | Kunz A.,Green Gas DPB a.s | And 3 more authors.
Advanced Materials Research | Year: 2014

The largest been realized installations of heat pumps in the Czech Republic, where the primary collector of low-potential heat is formed deep wells, is heating complex building of new Auditorium and CIT in campus of VSB – Technical University of Ostrava. This building represents two independent functional units (Auditorium with side halls and Information Technology Centre - CIT) with a total floor area of 9234 m2. The original project planned compound heating using district heating as a primary source of heat. Heating the object itself is a combination of floor heating systems and hot-air heaters. During project preparation has changed the project heating and a modern, technically unique and highly cost-effective solution has been designed with heat pump (type rock-water). Currently building heats 10 heat pumps with a total output of 700 kW through 110 wells with a depth of 130 m each. To assess the proportions of individual internal and external sources to the overall heat balance, the verification of systems designed for long-term monitoring of the behaviour of the rock massive around the energy used wells and energy storage options have been proposed and gradually implemented two research measuring polygons. They are located in the area of energy utilized wells. Each of the monitoring wells is instrumented with sensors at a certain depth. This article discusses the implementation of research polygons on experience with the excavation of wells using temperature sensors, a data acquisition system and finally outlines the possibilities of evaluating the measurement data. © (2014) Trans Tech Publications, Switzerland.

Holub K.,Academy of Sciences of the Czech Republic | Holecko J.,Green Gas DPB a.s. | Rusajova J.,Academy of Sciences of the Czech Republic | Dombkova A.,Academy of Sciences of the Czech Republic
Acta Geodynamica et Geomaterialia | Year: 2012

This paper is devoted to a complex review of various monitoring networks operating in the eastern part of the Ostrava- Karviná Coal Basin. In the first place, there were systems for monitoring seismoacoustic emissions during coal extraction. Later a local seismic network was installed which encompasses partial arrays of seismic stations located in the individual mines underground. In addition, a special regional seismic network was established in order to ensure reasonable recordings of strong seismic events observed in this area. In 2001 an array was constructed with up to five surface seismic stations which monitor manifestations of rockbursts due to imposed dynamic loading on existing buildings at selected sites. Recently, a quite new monitoring system of accelerometers began operating, the purpose of which is to check the effects of rockbursts on surface structures. Using the output data of all monitoring systems, different graphs were constructed, which can faciliate geophysical interpretation of geodynamic processes in mines.

Bujok P.,VSB - Technical University of Ostrava | Grycz D.,Green Gas DPB a.s. | Klempa M.,VSB - Technical University of Ostrava | Kunz A.,Green Gas DPB a.s. | And 4 more authors.
Energy | Year: 2014

In this paper the results of testing thermal parameters of the rock environment and measurement of borehole temperature profiles of the newly constructed experimental underground heat storage (BTES (Borehole Thermal Energy Storage)) in Paskov (Czech Republic) obtained with the TRT (thermal response method) and temperature measurement on boreholes at selected depth levels are summarised. The TRT measurement series on eight boreholes has shown the possibility to compare the differences among individual measurements in a practically identical rock environment. The temperature profiling of boreholes enabled studying the dynamics of temperature changes occurring in the rock environment as a reaction to the heat supply during the TRT. The measurement series was performed with the aim to assess the possibility of shortening the TRT duration while maintaining the acceptable precision of the measured results. For this reason the software simulation of shortening the TRT duration to 24h was performed, and the influence of such shortening to the precision of determination of values λ and RB was studied. The simulation has shown that shortening the test to 24h in our case would have brought an acceptable amount of inaccuracy with regard to the dispersion of measured values obtained from the real test. © 2013 Elsevier Ltd.

Holub K.,Academy of Sciences of the Czech Republic | Rusajova J.,Academy of Sciences of the Czech Republic | Holecko J.,Green Gas DPB a.s.
Acta Geodynamica et Geomaterialia | Year: 2013

The aim of this paper is to present the results of an investigation of induced seismic events which occurred during mining in the coalfields of Plants Paskov and Staříč of the Paskov Mine which belong to the southern part of the Ostrava-Karviná coal mines. Some results obtained in the time period January 1992 - December 2002 have already been published, and therefore, are mentioned here only briefly. The paper is based on new results of seismological observations at the OKC, KLOK, STEB seismic stations operated by the Institute of Geonics AS CR and stations of the Green Gas DPB, a.s., Paskov. A total of 26 seismic events were monitored from January 2008 to February 2012, most of them were localized into the area under study. As for the energy span of individual events according to the energetic classification of the Geophysical Centre of the Green Gas DPB, a.s., Paskov, all seismic events in Table 1 were estimated within the limits E(J) <5.0 ×102 ÷ 2.0 × 104 >.

Grycz D.,Green Gas DPB A.s. | Hemza P.,Green Gas DPB A.s. | Rozehnal Z.,Green Gas DPB A.s.
Energy Procedia | Year: 2014

A new, experimental borehole thermal energy storage (BTES) has been constructed in Paskov, Czech Republic. The storage consists of 16 energy boreholes performed to the depth of 60 m. In the boreholes the excessive waste heat from the CHP unit is stored. In this paper the BTES design and results of the rock environment response to the BTES charging and resting phase are briefly presented.

Pytlik A.,Green Gas DPB a.s. | Janeckova N.,VSB - Technical University of Ostrava | Grycz D.,Green Gas DPB a.s. | Bujok P.,VSB - Technical University of Ostrava | And 3 more authors.
JP Journal of Heat and Mass Transfer | Year: 2016

The article describes the implementation of high-temperature borehole thermal energy storage (BTES) in the Green Gas DPB, a.s. company’s premises in Paskov, Czech Republic. The storage, which is the first of its kind in the Czech Republic, was built within the research project supported by the Grant Agency of the Czech Republic. The uniqueness of the storage is also supported by the fact that as the heat source a cogeneration unit producing heat and electricity via mine gas (coal mine methane and abandoned mine methane) combustion is used. The article also provides an overview of temperatures developments in the monitoring borehole as well as of long-term and short-term charging and discharging cycles’ development. The first analyses of one selected cycle with the continual charging mode are presented. In the introduction, the large and small research polygons on the VSB-Technical University of Ostrava campus are mentioned. © 2016 Pushpa Publishing House, Allahabad, India.

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