Laboratory of Heat-Equipment Research and Testing (12)

Laboratory Chief
Nerijus Pedišius
Dr.

Laboratory of Heat-equipment Research and Testing
Scope | R&D Tools | Accredited Services | Certificates | Membership | Partners

Scope of research

Processes and technologies for the efficient use of R.E.S. and reduction of environmental pollution

  • physical and thermal properties of solid biomass and recovered fuel;
  • fuel preparation methods and technologies;
  • thermal conversion processes (combustion, gasification) of solid fuel;
  • solid biofuel drying;
  • solid biofuel dynamics and thermal conversion on moving grate and in fluidized bed;
  • emission formation processes in heating appliances;
  • efficiency of low capacity boilers and heating appliances fired by solid fuel.

 
Thermal physics, fluid mechanics and metrology

  • flows mixing in chambers of limited dimensions and various geometry;
  • permeability of gas mixtures through membranes;
  • particulate emission reduction;
  • flow dynamics in elastic channels;
  • ultrasound propagation in flows;
  • heat and mass transfer by molecular dynamics;
  • maintenance of five national flow and pressure standards and assurance of measurement traceability

Tools and capabilities for scientific R&D

Set of modern experimental facilities and measuring instruments for investigation of:

  • efficiency of small (up to 500 kW) space heating appliances fired by solid biofuel;
  • reducing gaseous and particulate matter emission by implementation of precipitation devices;
  • composition of biomass and various solid fuels as well as their physico-chemical properties;
  • liquid and gas flow dynamics in channels and chambers at the various inlet and boundary conditions, flow regime and its instability, physical properties variation;
  • inner flow structure of separated flow or flow in cavities situated in microchannel walls by using particle image velocimetry methods and macro/microPIV systems for flow visualization;
  • permeability of membranes and its use for separation of disadvantageous components from gas mixture.

 
CFD aplication for numerical simulation of:

  • flow dynamics analysis using software package ANSYS® Fluent®;
  • mixing of combustibles species and oxygen to enhance combustion process in furnace;
  • multi-physics numerical investigation using software package COMSOL Multiphysics®;
  • Coupled CFD-Discrete Element Method numerical research using homemade software package Bed_Motion, software package XDEM and Open Source package OpenFOAM®.
  • Molecular Dynamics investigations using software package LAMMPS®.

 
Our expertise for implementation of innovative projects and services

  • assurance of traceability of liquid, gas and heat supply and consumption measurement on national and international levels;
  • conformity assessment of measuring instruments and heat appliances before placing on the market or entry into service, or being in service;
  • fluid dynamics under the influence of flow disturbances and flow regimes;
  • numerical analysis and numerical methods applied in multi-physics problems;
  • particles system (granular mater) dynamics;
  • molecular dynamics in heat and mass transfer problems.

Accredited & notified services

Scope as Designated institute (DI) for maintenance of national standards for:[1]:
◦ air (gas) speed;
◦ air (gas) volume and flow rate;
◦ water volume and flow rate;
◦ liquid (other than water) volume and flow rate;
◦ pressure.
 
Accredited against LST EN ISO/IEC 17025 for:[2]:
◦ calibration of measuring instrument for gas and liquid volume and flow rate, pressure, temperature and air humidity;
◦ testing water and heat meters, heating appliances, solid biofuel and recovered fuel.
 
Accredited against EN ISO/IEC 17020 for[3]:
◦ verification of measuring instrument for gas and liquid volume and flow rate, pressure, temperature and air humidity;
◦ conformity assessment of heating appliances and boilers fired by solid and gaseous fuels.
 
Notified (Id. No. 1621) for conformity assessment of:[4]:
◦ water and heat meters (B, F and D modules) and measuring systems of liquids (other than water) (F module) against European Parliament and Council Directive 2014/32/EU;
◦ room heating appliances fired by solid fuel against European Parliament and Council Regulation (EU) No. 305/2011.
 
[1] Note. Measurand range and calibration and measurement capabilities are available on BIPM website: http://www.bipm.org/kcdb
[2], [3] Note. Scope of accreditation is available on Lithuanian National Accreditation Bureau (LA) website: http://www.nab.lrv.lt
[4] Note. Scope of notification is available on NANDO website: http://ec.europa.eu/growth/tools-databases/nando/
 

Certificates

Accreditation and certificates granted to the Laboratory of heat equipment research and testing:

Laboratory of Heat-Equipment Research and Testing complies with the requirements of LST EN ISO/IEC 17025:2018 and is accredited to perform:

  • tests of heating boilers, appliances burning gaseous fuels, solid biofuel, solid recovered fuel, water and thermal energy meters;
  • assessment and verification of performance of space heating appliances burning solid fuel according to requirements of Regulation (EU) No. 305/2011 of the European Parliament and of the Council.

Laboratory of Heat-Equipment Research and Testing complies with the requirements of LST EN ISO/IEC 17025:2018 and is accredited to perform the calibration of measuring instruments for liquids and gas flow, thermal energy, pressure, air humidity and temperature, capacity measures as well as water and gas flow standard facilities.


Laboratory of Heat-Equipment Research and Testing complies with the requirements of LST EN ISO/IEC 17020:2012 and is accredited as the A type inspection body to:

  • perform inspection of cooking appliances burning gas, liquids, gas and thermal energy meters, gas volume conversion devices, air velocity, moisture, pressure, temperature measuring instruments;
  • carry out conformity assessment procedures for water, thermal energy meters and measuring systems for liquids other than water, according to Directive 2014/32/EU of the European Parliament and of the Council with amendments made by Commission delegated Directive (EU) 2015/13, which was adopted by the Order of Minister of Economy of the Republic of Lithuania No. 4-699 „On Technical Regulation of Measuring instruments“ of 30/10/2015.

Institution which issued the documents:
Lithuanian National Accreditation Bureau


Membership in international organizations

EURAMET – European Association of National Metrology Institutes
COOMET – Euro-Asian Cooperation of National Metrological Institutions
NoBoMet – European Platform of Notified working in Legal Metrology


Laboratory partners and customers

Customers – all economic and research entities, the activities of which require accredited (or additionally notified) calibration, testing and conformity assessment services defined under legal acts.

Partners – Research institutions:

Lithuanian University of Health Sciences;
Kaunas University of Technology;
Center for Physical Sciences and Technology;
Nicolaus Copernicus University;
University of Luxembourg;
University of Twente;
The Szewalski Institute of Fluid-Flow Machinery Polish Academy of Sciences.

Partners – Companies:
partners and clients

Publications

2021

Meištininkas R. [LEI], Žaltauskaitė J.. An overview of siderate plants phytoremediation potential for petroleum hydrocarbons contaminated soil using various biological additives In: The 17th International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2021) Kaunas, Lithuania, May 24-28, 2021. Kaunas: Lietuvos energetikos institutas, 2021, p. 1214-1221. ISSN 1822-7554.
Kniuipytė I. [LEI], Žaltauskaitė J.. Vermi-remediation of heavy metals: a review In: The 17th International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2021) Kaunas, Lithuania, May 24-28, 2021. Kaunas: Lietuvos energetikos institutas, 2021, p. 1206-1213. ISSN 1822-7554.
Šereika J. [LEI]. Experimental and numerical analysis of the flow structure in cavities under pulsatile inlet flow conditions In: The 17th International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2021) Kaunas, Lithuania, May 24-28, 2021. Kaunas: Lietuvos energetikos institutas, 2021, p. 585-586. ISSN 1822-7554.
Skarbalius G. [LEI], Džiugys A. [LEI]. Molecular dynamics simulation of water flow inside planar nanochannel In: The 17th International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2021) Kaunas, Lithuania, May 24-28, 2021. Kaunas: Lietuvos energetikos institutas, 2021, p. 583-584. ISSN 1822-7554.
Petlickaitė R. [LEI], Jasinskas A., Streikus D.. Fibrous hemp biomass usage for energy purposes and biomass ash sustainable utilization In: The 17th International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2021) Kaunas, Lithuania, May 24-28, 2021. Kaunas: Lietuvos energetikos institutas, 2021, p. 111-113. ISSN 1822-7554.
Skarbalius G. [LEI], Džiugys A. [LEI], Misiulis E. [LEI], Navakas R. [LEI]. Molecular dynamics study on water evaporation/condensation parameters In: Microfluidics and Nanofluidics . Heidelberg: Springer, 2021, Vol. 25, 81, p. 1-13. ISSN 1613-4982, eISSN 1613-4990.
Kacienė G., Miškelytė D., Dikšaitytė A., Januškaitienė I., Sujetovienė G., Žaltauskaitė J., Praspaliauskas M. [LEI], Juknys R.. A manifold response of forage rape to combined heat wave and drought under current and elevated CO2 In: Journal of Agronomy and Crop Science. Hoboken: WILEY, 2021, Vol. 207, Iss. 5, p. 873-883. ISSN 0931-2250, eISSN 1439-037X.
Konstantinavičiūtė I. [LEI], Byčenkienė S., Plauškaitė-Šukienė K., Striūgas N. [LEI], Sadeckas M. [LEI], Vonžodas T. [LEI], Pedišius N. [LEI]. Evaluation of emission factors for air polutants from biomass combustion in Lithuania In: 1st IAEE Online conference “ENERGY, COVID and CLIMATE CHANGE”, 7-9 June 2021. Paris: International Association for Energy Economics (IAEE), 2021, p. 1-2..
Vilkinis P. [LEI], Šereika J. [LEI], Pedišius N. [LEI]. Proper orthogonal decomposition analysis of flow structure over triangular roughness elements In: Proceedings 15th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics (ATE-HEFAT2021), Virtual conference, 26-28 July 2021.. Amsterdam: American Society of Thermal and Fluids Engineers, 2021, p. 1877-1882. ISBN 978-1-77592-216-2 .
Pedišius N. [LEI], Praspaliauskas M. [LEI], Pedišius J. [LEI], Dzenajavičienė Farida E. [LEI]. Analysis of Wood Chip Characteristics for Energy Production in Lithuania In: Energies. Basel: MDPI, 2021, Vol. 14, 3931, p. 1-13. ISSN 1996-1073.
Jasinskas A., Skruodys J., Domeika R., Mieldažys J., Pedišius N. [LEI]. Investigation of physical-mechanical and energy properties of granulated cereal plant waste and ash obtained by incineration of produced biofuel In: Proceedings 20th International Scientific Conference Engineering for Rural Development. Jelgava: Latvia University of Life Sciences and Technologies Faculty of Engineering, 2021, Vol. 20, p. 1120-1126. Scopus, CROSSREF . ISSN 1691-5976.
Minajeva A., Jasinskas A., Domeika R., Vaiciukevičius E., Lemanas E. [LEI], Bielski S.. The Study of the Faba Bean Waste and Potato Peels Recycling for Pellet Production and Usage for Energy Conversion In: Energies. Basel: MDPI, 2021, Vol. 14, 2954, p. 1-14. ISSN 1996-1073.
Yousef S., Eimontas J. [LEI], Striūgas N. [LEI], Praspaliauskas M. [LEI], Abdelnaby M. A.. Pyrolysis Kinetic Behaviour of Glass Fibre-Reinforced Epoxy Resin Composites Using Linear and Nonlinear Isoconversional Methods In: Polymers. Basel: MDPI, 2021, Vol. 13, Iss. 10, 1543, p. 1-18. ISSN 2073-4360.
Li G., Knozowska K., Kujava J., Tonkonogovas A. [LEI], Stankevičius A. [LEI], Kujawski W.. Fabrication of Polydimethysiloxane (PDMS) Dense Layer on Polyetherimide (PEI) Hollow Fiber Support for the Efficient CO2/N2 Separation Membranes In: Polymers. Basel: MDPI, 2021, Vol. 3, No. 5, 756, p. 1-15. ISSN 2073-4360.
Lučinskas P., Deimantavičius M., Bartušis L., Žakelis R., Misiulis E. [LEI], Džiugys A. [LEI], Hamarat Y.. Human ophthalmic artery as a sensor for non-invasive intracranial pressure monitoring: numerical modeling and in vivo pilot study In: Scientific reports. London: Springer, 2021, Vol. 11, iss. 1, 4736, p. 1-10. ISSN 2045-2322.
Pedišius N. [LEI], Bertašienė A. [LEI]. Reproduction of air velocity in the entrance region of the test pipe in a wind tunnel In: Flow Measurement and Instrumentation . Oxford: Elsevier, 2021, Vol. 77, 101851, p. 1-7. Scopus . ISSN 0955-5986, eISSN 1873-6998.
Kulokas M. [LEI], Praspaliauskas M. [LEI], Pedišius N. [LEI]. Investigation of Buckwheat Hulls as Additives in the Production of Solid Biomass Fuel from Straw In: Energies. Basel: MDPI, 2021, Vol. 4 (2), 265, p. 1-10. ISSN 1996-1073.
Yousef S., Šereika J. [LEI], Tonkonogovas A. [LEI], Hashem T., Mohamed A.. CO2/CH4, CO2/N2 and CO2/H2 selectivity performance of PES membranes under high pressure and temperature for biogas upgrading systems In: Environmental technology & innovation. Amsterdam: Elsevier, 2021, vol. 21, 101339, p. 1-12. ISSN 2352-1864.

2020

Högström R., Heinonen M., Spazzini P. G., Kramer R., Busk J., Niederhauser B., Metaxiotou Z., Blom G., Kutin J., Stankevičius A. [LEI]. Comparison for gas flow range 5 ml/min to 30 l/min (EURAMET.M.FF-S10) FINAL REPORT In: Metrologia. Bristolis: IOP Publishing, 2020, Vol. 57, no. 1A, 07029, p. 1-94. ISSN 0026-1394.
Frahm E., Mickan B., Gulyuk V., Reut G., Zygmantas G. [LEI], Benkova M., Kayumov M.. Final report on supplementary comparison of national standards for liquid flow COOMETMFF-S2 (COOMET Project 406/UA/07) In: Metrologia. Bristolis: IOP Publishing, 2020, Vol. 57, Iss. 1A, 07023, p. 1-62. ISSN 0026-1394, eISSN 1681-7575.
Navakas R. [LEI], Džiugys A. [LEI], Misiulis E. [LEI], Skarbalius G. [LEI]. Applicability of Fuzzy Algorithms for Analysis of Motion in Granular Media In: AIP Conference Proceedings International Conference of Numerical Analysis and Applied Mathematics ICNAAM 2019. 2020, 2293, 420046, p. 1-5..
Praspaliauskas M. [LEI], Pedišius N. [LEI], Čepauskienė D. [LEI], Valantinavičius M. [LEI]. Study of chemical composition of agricultural residues from various agro-mass types In: Biomass Conversion and Biorefinery. Heidelberg: Springer, 2020, Vol. 10, p. 937-948. ISSN 2190-6815, eISSN 2190-6823.
Maknickas A., Skarbalius G. [LEI], Džiugys A. [LEI], Misiulis E. [LEI]. Nano-scale water Poiseuille flow: MD computational experiment In: AIP conference proceedings 4th Polish congress of mechanics and the 23rd International conference on computer methods in mechanics, September 8-12 2019, Krakow. Melville, NY: AIP Publishing, 2020, Vol. 2239, Iss. 1, 020029, p. 1-6. ISSN 0094-243X ISBN 978-0-7354-1998-8.
Praspaliauskas M. [LEI], Žaltauskaitė J., Pedišius N. [LEI], Striūgas N. [LEI]. Comprehensive evaluation of sewage sludge and sewage sludge char soil amendment impact on the industrial hemp growth performance and heavy metal accumulation In: Industrial Crops and Products. Amsterdam: Elsevier, 2020, Vol. 150, 112396, p. 1-13. ISSN 0926-6690.
Dikšaitytė A., Viršilė A., Žaltauskaitė J., Januškaitienė I., Praspaliauskas M. [LEI], Pedišius N. [LEI]. Do plants respond and recover from a combination of drought and heatwave in the same manner under adequate and deprived soil nutrient conditions? In: Plant Science. Clare: Elsevier, 2020, Vol. 291, 110333, p. 1-14. ISSN 0168-9452, eISSN 1873-2259.
Kujawski W., Li G., Van der Bruggen B., Pedišius N. [LEI], Tonkonogij J. [LEI], Tonkonogovas A. [LEI], Stankevičius A. [LEI], Šereika J. [LEI], Jullok N., Kujawa J.. Preparation and Characterization of Polyphenylsulfone (PPSU) Membranes for Biogas Upgrading In: Materials. Basel: MDPI, 2020, Vol. 13, Iss. 12, 2847, p. 1-22. ISSN 1996-1944.
Jasinskas A., Streikus D., Vonžodas T. [LEI]. Fibrous hemp (Felina 32, USO 31, Finola) and fibrous nettle processing and usage of pressed biofuel for energy purposes In: Renewable Energy. Oxford: Elsevier, 2020, Vol. 149, p. 11-21. ISSN 0960-1481.
Jeguirim M., Goddard M.-L., Tamošiūnas A. [LEI], Berrich-Betouche E., Azzaz A. A., Praspaliauskas M. [LEI], Jellali S.. Olive mill wastewater: From a pollutant to green fuels, agricultural water source and bio-fertilizer. Biofuel production In: Renewable Energy. Oxford: Elsevier, 2020, Vol. 149, p. 716-724. ISSN 0960-1481.
Kniuipytė I., Praspaliauskas M. [LEI], Žaltauskaitė J., Dikšaitytė A.. Bioremediation Efficiency of Heavy Metal Contaminated Soil Using Earthworm Eisenia Fetida In: 11th International Conference “Environmental Engineering” Vilnius Gediminas Technical University Lithuania, 21–22 May 2020: Section: Environmental Protection and Water Engineering. Vilnius: VGTU, 2020, p. 1-8..
Jasinskas A., Minajeva A., Šarauskis E., Romaneckas K., Kimbirauskienė R., Pedišius N. [LEI]. Recycling and utilisation of faba bean harvesting and threshing waste for bioenergy In: Renewable Energy . Oxford: Elsevier, 2020, Vol. 162, p. 257-256. ISSN 0960-1481.
Džiugys A. [LEI], Bieliūnas M., Skarbalius G., Masiulis E., Navakas R. [LEI]. Simplified model of Covid-19 epidemic prognosis under quarantine and estimation of quarantine effectiveness In: Chaos, Solitons & Fractals . Oxford: Elsevier, 2020, Vol. 140, 110162, p. 1-11. Science Citation Index Expanded, Current Contents Physical, Chemical & Earth Sciences. ISSN 0960-0779, eISSN 1873-2887.
Yousef S., Eimontas J., Striūgas N. [LEI], Zakarauskas K. [LEI], Praspaliauskas M. [LEI], Abdelnaby M. A.. Pyrolysis kinetic behavior and TG-FTIR-GC–MS analysis of metallised food packaging plastics In: Fuel. Elsevier, 2020, Vol. 282, 118737, ISSN 0016-2361.
Vilkinis P. [LEI], Pedišius N. [LEI]. Analysis of reattachment length dynamics in cavities In: Experimental Thermal and Fluid Science. New York: Elsevier, 2020, Vol. 119, Article ID 110211, p. 1-8. ISSN 0894-1777.

2019

Čepauskienė D. [LEI], Pedišius N. [LEI]. Mineralogical changes in ash of hemp and wheat straw at different ashing temperatures In: The 16th International Conference of Young Scientists on Energy Issues (CYSENI 2019) Kaunas, Lithuania, May 23-24, 2019. Kaunas: Lietuvos energetikos institutas, 2019, p. 7-12. ISSN 1822-7554.
Skvorčinskienė R. [LEI], Striūgas N. [LEI], Navakas R. [LEI], Paulauskas R. [LEI], Zakarauskas K. [LEI], Vorotinskienė L. [LEI]. Thermal analysis of waste fishing nets for polymer recovery In: Waste and Biomass Valorization. Dordrecht: Springer, 2019, Vol. 10, No. 12, p. 3735-3744. ISSN 1877-2641, eISSN 1877-265X.
Yousef S., Eimontas J., Striūgas N. [LEI], Tatariants M., Abdelnaby M. A., Tučkutė S. [LEI], Kliučininkas L.. A sustainable bioenergy conversion strategy for textile waste with self-catalysts using mini-pyrolysis plant In: Energy Conversion and Management. Elsevier, 2019, Vol. 196, p. 688-704. ISSN 0196-8904.
Byčenkienė S., Konstantinavičiūtė I. [LEI], Plauškaitė K., Striūgas N. [LEI], Vonžodas T. [LEI], Sadeckas M. [LEI], Pedišius N. [LEI], Juodka R., Juška R., Juškienė V.. Country-specific emission factors for biomass combustion in residential and agriculture sectors In: Lithuanian Journal of Physics. Vilnius: Lithuanian Academy of Sciences, 2019, Vol. 59, No. 2, p. 113-120. ISSN 1648-8504.
Ramonas R., Jasinskas A., Minajeva A., Pedišius N. [LEI], Vonžodas N.. Pupų atliekų paruošimas ir naudojimas deginimui bei poveikio aplinkai įvertinimas In: Žmogaus ir gamtos sauga: mokslo straipsnių rinkinys. Kaunas: Vytauto Didžiojo universitetas, 2019, p. 66-70. ISSN 1822-1823, eISSN 2538-9122.
Kulokas M. [LEI], Zaleskas V. [LEI], Pedišius N. [LEI], Praspaliauskas M. [LEI], Buinevičius K.. Properties of biofuel fly ash and capabilities of its use for agricultural needs In: Agronomy research. 2019, Vol. 17, No. 2, p. 540-550. ISSN 1406-894X.

2018

Striūgas N. [LEI], Pedišius N. [LEI], Poškas R. [LEI], Valinčius V. [LEI]. Sewage sludge gasification with plasma processing In: Conference proceedings 5th International Conference on Renewable Energy Gas Technology . Toulouse, France: REGATEC, 2018, p. 129-130. ISBN 978-91-981149-4-2.
Sadeckas M. [LEI], Striūgas N. [LEI], Andriūnas P., Navakas R. [LEI], Praspaliauskas M. [LEI], Rabacal M., Costa M.. Spontaneous emission measurements of selected alkali radicals during the combustion of a single biomass pellet In: Energy fuels. Washinton, USA: American Chemical Society, 2018, Vol. 32 (10), p. 10132-10143. ISSN 0887-0624, eISSN 1520-5029.
Praspaliauskas M. [LEI], Pedišius N. [LEI], Striūgas N. [LEI]. Elemental Migration and transformation from sewage sludge to residual products during the pyrolysis process In: Energy Fuels. Washington, USA: ACS (American Chemical Society), 2018, Vol. 32, p. 5199-5208. ISSN 0887-0624.
Vilkinis P. [LEI], Pedišius N. [LEI]. Parametric analysis of recirculating flow dynamics in microcavity In: The 15th International Conference of Young Scientists on Energy Issues (CYSENI 2018) Kaunas, Lithuania, May 23-25, 2018. Kaunas: Lietuvos energetikos institutas, 2018, p. 353-359. ISSN 1822-7554.
Praspaliauskas M. [LEI], Žaltauskaitė J.. Hemp ability accumulate heavy metals from high level fertilized soil of sewge sludge and sewage sludge char In: The 15th International Conference of Young Scientists on Energy Issues (CYSENI 2018) Kaunas, Lithuania, May 23-25, 2018. Kaunas: Lietuvos energetikos institutas, 2018, p. 48-54. ISSN 1822-7554.
Čepauskienė D. [LEI], Pedišius N. [LEI]. Investigation of the effect of kaolin additive and different ashing temperature of agromass In: The 15th International Conference of Young Scientists on Energy Issues (CYSENI 2018) Kaunas, Lithuania, May 23-25, 2018. Kaunas: Lietuvos energetikos institutas, 2018, p. 35-39. ISSN 1822-7554.
Zaleskas V. [LEI], Kulokas M. [LEI], Pedišius N. [LEI]. Investigation of chemical composition of particulate matter emmited from small and medium scale biomass boilers In: The 15th International Conference of Young Scientists on Energy Issues (CYSENI 2018) Kaunas, Lithuania, May 23-25, 2018. Kaunas: Lietuvos energetikos institutas, 2018, p. 19-26. ISSN 1822-7554.
Ostasevičius V., Tretsyakou-Savich Y., Venslauskas M., Bertašienė A. [LEI], Minchenya V., Chernoglaz P.. Adaptation of cardiovascular system stent implants In: Biomedical Engineering / Biomedizinische Technik. Berlin/Boston: Walter de Gruyter GmgH, 2018, Vol. 63, Iss. 3, p. 279-290. ISSN 0013-5585.
Vilkinis P. [LEI], Pedišius N. [LEI], Valantinavičius M. [LEI]. Investigation of flow dynamics over transitional-type microcavity In: Journal of Fluids Engineering. New York: ASME, 2018, Vol. 140, Iss. 7, p. 1-7. ISSN 0098-2202.
Praspaliauskas M. [LEI], Pedišius N. [LEI], Gradeckas A.. Accumulation of heavy metals in stemwood of forest tree plantations fertilized with different sewage sludge doses In: Journal of Forestry Research. Berlin Heidelberg: Springer, 2018, Vol. 29, Iss. 2, p. 347-361. ISSN 1007-662X.
Poškas R. [LEI], Sirvydas A. [LEI], Poškas P. [LEI], Jouhara H., Striūgas N. [LEI], Pedišius N. [LEI], Valinčius V. [LEI]. Investigation of warm gas clean-up of biofuel flue and producer gas using electrostatic precipitator In: Energy. Oxfordas: Elsevier, 2018, Vol. 143, p. 943-949. ISSN 0360-5442.
Poškas R. [LEI], Sirvydas A. [LEI], Poškas P. [LEI], Jouhara H., Striūgas N. [LEI], Pedišius N. [LEI], Valinčius V. [LEI]. Investigation of warm gas clean-up of biofuel flue and producer gas using electrostatic precipitator In: Energy. 2018, Vol. 143, p. 943-949. ISSN 0360-5442.

2017

Streikus D., Jasinskas A., Domeika R., Čekanauskas S., Pedišius N. [LEI], Vonžodas T. [LEI], Annuk A.. Evaluation of giant knotweed and miscanthus as perspective energy plants and assessment of produced biofuel quality indicators In: Proceedings of the 8th International Scientific Conference Rural Development 23-24 d. 2017. Kaunas: Aleksandro Stulginskio universitetas, 2017, p. 448-452. ISSN 1822-3230, eISSN 2345-0916.
Poškas R. [LEI], Sirvydas A. [LEI], Poškas P. [LEI], Striūgas N. [LEI], Pedišius N. [LEI], Valinčius V. [LEI]. Investigation of the biofuel flue and producer gases cleaning efficiency using ESP In: E3S Web of Conferences. 7 November 2017. Didžioji Britanija . EDP Sciences, 2017, Vol.22, p. 1-7..
Pedišius N. [LEI], Škėma R. [LEI], Vrubliauskas S. [LEI], Dzenajavičienė Farida E. [LEI]. ES Interreg programos projekto „Baltijos regiono energetikos rajonavimas – planavimo perspektyvos (BEA-APP)“ vykdymo eiga ir uždaviniai In: Energetika (Kronika). Vilnius: Lietuvos mokslų akademija, 2017, T. 63, Nr. 1, p. xi-xiii. ISSN 0235-7208.
Pedišius N. [LEI], Škėma R. [LEI], Vrubliauskas S. [LEI], Dzenajavičienė Farida E. [LEI]. Atsinaujinančius išteklius naudojančių energetikos objektų planavimas regioniniu lygiu In: Šiluminė technika. Vilnius: Lietuvos šilumos tiekëjų (LŠTA) ir Lietuvos šiluminës technikos inžinierių (LŠTIA) asociacijų žurnalas, 2017, Nr. 1 (70), p. 21-22. ISSN 1392-4346.
Pachinger D., De Huu M., Mueller H., Care I., Frederiksen J., Piccato A., Bertašienė A. [LEI]. EURAMET project No. 1225: Intercomparison of very low air speed standard facilities (0.05-1m/s) (Final report) In: Metrologija. Austrija: 2017, Vol. 54, p. 1-22. ISSN 1681-7575 (Online), 0026-1394 (Print).
Valantinavičius M. [LEI], Čepauskienė D. [LEI]. Experimental study on ash fusion characteristics of agromass and woody biomass In: The 14th International Conference of Young Scientists on energy Issues (CYSENI 2017), Kaunas, Lithuania, May 25-26, 2017. Kaunas: Lietuvos energetikos institutas, 2017, p. 22-29. ISSN 1822-7554.
Zaleskas V. [LEI], Pedišius N. [LEI]. Investigation of particulate matter emmited from small and medium scale boilers size distribution In: The 14th International Conference of Young Scientists on energy Issues (CYSENI 2017), Kaunas, Lithuania, May 25-26, 2017. Kaunas: Lietuvos energetikos institutas, 2017, p. 38-44. ISSN 1822-7554.
Vilkinis P. [LEI], Pedišius N. [LEI]. Investigation of pulsating flow in open-type microcavity In: The 14th International Conference of Young Scientists on energy Issues (CYSENI 2017), Kaunas, Lithuania, May 25-26, 2017. Kaunas: Lietuvos energetikos institutas, 2017, p. 308-315. ISSN 1822-7554.
Striūgas N. [LEI], Valinčius V. [LEI], Pedišius N. [LEI], Poškas R. [LEI], Zakarauskas K. [LEI]. Investigation of sewage sludge treatment using air plasma assisted gasification In: Waste Management. 2017, Vol. 64, p. 149-160. ISSN 0956-053X.
Venslauskas M., Ostasevičius V., Vilkinis P. [LEI]. Influence of low-frequency vibrations on blood flow improvement in human’s limbs In: Bio-Medical Materials and Engineering. 2017, Vol. 28, No. 2, p. 117-130. ISSN 0959-2989.
Praspaliauskas M. [LEI], Pedišius N. [LEI]. A review of sludge characteristics in Lithuania’s wastewater treatment plants and perspectives of its usage in thermal processes In: Renewable and Sustainable Energy Reviews. Elsevier, 2017, p. 899-907. ISSN 1364-0321.

2016

Praspaliauskas M. [LEI]. Posibilities of anaerobic digested sewage sludge thermal utilization in Lithuania In: 13th Annual international conference of young scientists on energy issues (CYSENI 2016), Kaunas, Lithuania, May 26–27, 2016. Kaunas: LEI, 2016. Kaunas: Lietuvos energetikos institutas, 2016, p. 107-113. ISSN 1822-7554.
Zaleskas V. [LEI], Valaitis D.. Analysis of precipitated particles in esp and cyclones of small and medium scale boilers In: 13th Annual international conference of young scientists on energy issues (CYSENI 2016), Kaunas, Lithuania, May 26–27, 2016. Kaunas: LEI, 2016. Kaunas: Lietuvos energetikos institutas, 2016, p. 311-316. ISSN 1822-7554.
Vonžodas T. [LEI]. The application of agricultural waste and recycling products for small and medium scale boilers In: 13th Annual international conference of young scientists on energy issues (CYSENI 2016), Kaunas, Lithuania, May 26–27, 2016. Kaunas: LEI, 2016. Kaunas: Lietuvos energetikos institutas, 2016, p. 297-304. ISSN 1822-7554.
Čepauskienė D. [LEI], Pedišius N. [LEI], Valantinavičius M. [LEI]. Kuro, gaminamo iš medienos ir agromasės, pelenų lydumo tyrimas In: Šilumos energetika ir technologijos-2016: konferencijos pranešimų medžiaga, Kauno technologijos universitetas, 2016 sausio 28-29 . Kaunas: Lietuvos energetikos institutas, 2016, p. 73-79. ISSN 2335-2485.
Valančienė E., Miknius L., Pedišius N. [LEI]. The influence of zeolite catalyst on kinetics and thermodynamics of polypropylene waste thermal degradation In: Journal of Thermal Analysis and Calorimetry. Nyderlandai, Dordrecht: Springer, 2016, Vol. 124, Iss. 1, p. 341-354. ISSN 1388-6150.
Pedišius A. [LEI], Tonkonogij J., Pedišius N. [LEI], Zygmantas G. [LEI], Stankevičius A. [LEI], Tonkonogovas A. [LEI], Bertašienė A. [LEI], Maslauskas E. [LEI], Vilkinis P. [LEI]. Skysčio ir dujų srautų dinamikos kanaluose tyrimai tūrio, debito ir greičio matavimų tikslumui didinti In: Energetika. Vilnius: Lietuvos mokslų akademija, 2016, T. 62, Nr. 3, p. 189-205. ISSN 0235-7208.
Vilkinis P. [LEI], Valantinavičius M. [LEI], Pedišius N. [LEI]. Investigation of fluid flow structure in open type cavity under stationary and pulsatile flow conditions In: Energetika. Vilnius: Lietuvos mokslų akademija, 2016, T. 62, Nr. 1-2, p. 37-44. ISSN 0235-7208.
Pedišius N. [LEI], Praspaliauskas M. [LEI], Valantinavičius M. [LEI], Vonžodas T. [LEI], Zaleskas V. [LEI], Lemanas E. [LEI], Čepauskienė D. [LEI]. Biokuro savybių ir juo kūrenamų mažos bei vidutinės galios įrenginių efektyvumo ir taršos parametrų tyrimai In: Energetika. Vilnius: Lietuvos mokslų akademija, 2016, T. 62, Nr. 4, p. 268-281. ISSN 0235-7208.
Varnagiris Š. [LEI], Duonėlienė J., Tučkutė S. [LEI], Vonžodas T. [LEI], Lelis M. [LEI], Milčius D. [LEI]. Incorporation of particles into the bulk of expanded polystyrene foam using physical vapour deposition technologies In: Energetika. Vilnius: Lietuvos mokslų akademija, 2016, T. 62, Nr. 1-2, p. 28-36. ISSN 0235-7208.

2015

Praspaliauskas M. [LEI], Pedišius N. [LEI]. Heavy metals concentration in stemwood of energetic trees fertilized with sewage sludge In: 12th Annual international conference of young scientists on energy issues (CYSENI 2015), Kaunas, Lithuania, May 27–28, 2015. Kaunas: Lietuvos energetikos institutas, 2015, p. 110-117. ISSN 1822-7554.
Praspaliauskas M. [LEI], Pedišius N. [LEI]. Nuotekų dumblo Lietuvos vandenvalos sistemose savybių tyrimas In: Šilumos energetika ir technologijos - 2015: konferencijos pranešimų medžiaga, Kauno technologijos universitetas, 2015 sausio 29-30 . Kaunas: Kauno technologijos universitetas, 2015, p. 19-26. ISSN 2335-2485.
Striūgas N. [LEI], Pedišius N. [LEI], Poškas R. [LEI], Valinčius V. [LEI]. Development of innovative thermal decomposition technology and its application for utilization of sewage sludge In: 23rd European Biomass Conference and Exhibition (Session 2CO.2.3) . Vienna: 2015, p. 546-549. ISBN 978-88-89407-516.
Vilkinis P. [LEI], Pedišius N. [LEI], Valantinavičius M. [LEI]. Vandens tekėjimo mikrokanale tyrimas dalelių vizualizacijos metodu In: Energetika. Vilnius: Lietuvos mokslų akademija, 2015, Vol. 61, Nr. 2, p. 57-70. ISSN 0235-7208.
Praspaliauskas M. [LEI], Pedišius N. [LEI], Valantinavičius M. [LEI]. Perspectives of sewage sludge usage for energy production in Lithuania In: Proceedings of the 7th Baltic heat transfer conference. Tallinn, Estonia August 24-26, 2015. Tallin: Talino technologijos universitetas, 2015, p. 273-278. ISBN 978-9949-23-817-0.
Tonkonogij J. [LEI], Pedišius N. [LEI], Stankevičius A. [LEI], Tonkonogovas A. [LEI]. Mažos ir vidutinės galios kietuoju kuru kūrenamų įrenginių kietųjų dalelių emisijų tyrimas In: Energetika. Vilnius: Lietuvos mokslų akademija, 2015, T. 61, Nr. 3-4, p. 119-130. ISSN 0235-7208.
Pedišius N. [LEI], Zygmantas G. [LEI], Maslauskas E. [LEI]. Influence of Gas and Liquid Viscosity on Turbine and Positive Displacement Meters Calibration In: 17 International Congress of Metrology. Paris, France 21-24 September. EDP Sciences, 2015, p. 1-6..
Tonkonogij J. [LEI], Stankevičius A. [LEI], Bertašienė A. [LEI], Tonkonogovas A. [LEI]. The new method for calibration and testing of the bell type prover In: 17 International Congress of Metrology. Paris, France 21-24 September. EDP Sciences, 2015, p. 1-3..
Valančienė E., Miknius L., Pedišius N. [LEI]. The influence of zeolite catalyst on polypropylene waste thermal decomposition kinetics and thermodynamics In: International Conference of Lithuanian Chemical Society Chemistry and Chemical Technology . Vilnius: Vilniaus universitetas, 2015, p. 347-349. ISBN 978-609-459-461-8.

2012

Dementjev A., Murauskas E., Slavinskis N., Navakas R. [LEI], et al. Control of the repetition rate and reduction of the jitter of the pulses of passively Q-switched solid-state miniature lasers using periodic diode-pump modulation In: Quantum electronics. 2012, Vol. 42, No. 5, p. 437-446. ISSN 1063-7818.

Projects

International projects

Seventh Framework Programme (FP7)

1

Main objective of the Researcher night 2011 is to enhancing public recognition of researchers and their work, through bringing public and researchers closer to one other, tackling theMore

Fifth Framework Programme (FP5)

1

This proposal for a Thematic Network responds to the Growth-Dedicated Call - 10/00 - Topic IV: Implementation of measuring instruments directives according to the New Approach. The tyMore

2

Standards are seen as a major measure to develop the markets for solid bio fuels to achieve the environmental, social and agricultural goals of the Commission. On this background the More

Interreg

1
Interreg Baltic Sea Region programme logo

In the main stage project LowTEMP, capacity building with regard to LTDH is one work focus and on this background the “LowTEMP training package” will be developed until the end of 202More

2

Key outcomes and lessons from the Main stage project Bioenergy Promotion (2009-2012). During the period 2009-2011 the consortium behind the Bioenergy Promotion project implemented manMore

3
BEA-APP project logo thumbnail

In the project "Baltic Energy Areas – A Planning Perspective" (BEA-APP) 11 partners from eight countries around the Baltic Sea cooperate to support the transition towards low-carbon eMore

4

The Baltic Sea Region, with its agricultural and forest resources, has great potential to fulfil EU objectives for biomass heat, power and fuel production. However, sustainable bioeneMore

Personnel

Name, surname Position Office phone. e-mail
Nerijus Pedišius Head (Senior research associate) 204/1-LK +37037401863 Nerijus.Pedisius@lei.lt
Gediminas Ardzijauskas Engineer metrologist 209-LK
Agnė Bertašienė Junior research associate 328/1-AK +37037401865 Agne.Bertasiene@lei.lt
Andrius Bončkus Junior research associate 202-LK +37037401861 Andrius.Bonckus@lei.lt
Inga Briliūtė Junior research associate 328/1-AK +37037401865 Inga.Briliute@lei.lt
Deimantė Čepauskienė PhD student + Junior research associate 87,88-BRK +37037401951 Deimante.Cepauskiene@lei.lt
Aldevinas Damarodas Lathe operator 34-BRK +37037401868
Severinas Damašauskas Technitian
Eugenija Farida Dzenajavičienė Research associate 207-LK +37037401935 Farida.Dzenajaviciene@lei.lt
Algis Džiugys Chief research associate 118-AK +37037401874 Algis.Dziugys@lei.lt
Vytautas Gipas Engineer 214-LK +37037401859 Vytautas.Gipas@lei.lt
Artūras Grubas Engineer 87-BRK +37037401951 Arturas.Grubas@lei.lt
Algirdas Jasinskas Research associate Algirdas.Jasinskas@lei.lt
Audrius Kaminskas Engineer 201-LK +37037401860
Kazimieras Kapočius Engineer 214-LK +37037401859 Kazimieras.Kapocius@lei.lt
Inesa Kniuipytė PhD student Inesa.Kniuipyte@lei.lt
Mindaugas Kulokas Junior research associate 205-LK +37037401864 Mindaugas.Kulokas@lei.lt
Gražina Leonarda Kurševičienė Lab administrator 204-LK +37037401863 Grazina.Kurseviciene@lei.lt
Egidijus Lemanas Junior research associate 89-BRK +37037401825 Egidijus.Lemanas@lei.lt
Vytautas Makūnas Machinist 34-BRK +37037401868
Eugenijus Maslauskas Junior research associate 214-LK +37037401859 Eugenijus.Maslauskas@lei.lt
Rimas Meištininkas PhD student Rimas.Meistininkas@lei.lt
Edgaras Misiulis Junior research associate 107-LK +37037401876 Edgaras.Misiulis@lei.lt
Mindaugas Mockevičius Junior research associate 202-LK +37037401861 Mindaugas.Mockevicius@lei.lt
Robertas Navakas Senior research associate 103-LK +37037401872 Robertas.Navakas@lei.lt
Justinas Pedišius Junior research associate 87-BRK +37037401951 Justinas.Pedisius@lei.lt
Vytautas Pedišius Engineer 19-BRK +37037401869 Vytautas.Pedisius@lei.lt
Antanas Pedišius Chief researh associate 303/2-AK +37037401845 Antanas.Pedisius@lei.lt
Rita Petlickaitė PhD student Rita.Petlickaite@lei.lt
Marius Praspaliauskas Senior research associate 87-BRK +37037401951 Marius.Praspaliauskas@lei.lt
Gediminas Skarbalius PhD student + Mechanical engineer 107-LK +37037401876 Gediminas.Skarbalius@lei.lt
Arūnas Stankevičius Junior research associate 203-LK +37037401862 Arunas.Stankevicius@lei.lt
Justas Šereika PhD student + Engineer 206-LK +37037401849 Justas.Sereika@lei.lt
Andrius Tonkonogovas Junior research associate 203-LK +37037401862 Andrius.Tonkonogovas@lei.lt
Arvydas Tumosa Engineer 119-LK +37037401880
Janina Vaitasienė Engineer metrologist 303-AK +37037401845 Janina.Vaitasiene@lei.lt
Irena Vaškevičienė Engineer 89-BRK +37037401825 Irena.Ramanauskaite@lei.lt
Paulius Vilkinis Research associate 206-LK +37037401849 Paulius.Vilkinis@lei.lt
Audronė Vitkauskienė Engineer 328/1-AK +37037401865 Audrone.Vitkauskiene@lei.lt
Tomas Vonžodas Junior research associate 89-BRK +37037401825 Tomas.Vonzodas@lei.lt
Vladas Zaleskas Junior research associate 205-LK +37037401864 Vladas.Zaleskas@lei.lt
Gediminas Zygmantas Research associate 202-LK +37037401861 Gediminas.Zygmantas@lei.lt
Jūratė Žaltauskaitė Senior research associate Jurate.Zaltauskaite@lei.lt
Leonardas Žukauskas Technician 201-LK +37037401860

Services

Preparation of solid fuel and calorific waste samples
The preparation of solid and calorific waste and soft, hard, elastic and fibrous materials of  0,25 ÷ 20 mm fractions. Compression of crushed materials into  suitable samples for analysis. Ensuring proper working conditions while mineralizing the samples. Preparation of deionised water for mineralization of samples.
Measurements of parameters (T, p, Δp, v)
Measurements of temperature, pressure, differential pressure and speed, measurement data collection and recording.
Determination of Cl, F, Br concentrations in the fuel
The determination of the Cl, F, Br concentration in the fuel in order to assess possible environmental pollution with harmful elements and evaluation of fuel quality indicators.
Investigations of Biofuel Pellet Furnaces
Research of furnaces up to 25 kW fired with biofuel pellets.
Study of the separation of synthetic gas phase from the solid biofuels and refinery fuel in the reactor and further sudy of their parameters and use
Scientific research on solid fuel gasification in order to find wider applications or to improve quality.
Analysis of the melting state of the ash
It is intended to analyze the ash melting state and conditions and to visualize how the softening and melting processes of ash take place, depending on the temperature or  variation of its gradient value.
Investigation of Flow Structure and Processes in Microsystems (Capillaries, Structured Membrane and Catalyst Surfaces)
Investigations of low velocity liquid and gas dynamics at surfaces, membranes and various microelements, surface contamination, motion and mass transfer processes in capillary systems.
Analysis of heat production from natural, pyrolysis, liquefied gases, biogas and mixtures of those gases
Identification and analysis of upper and lower heating values of gaseous fuels, including biofuels and recovered fuels. Determination and analysis of upper and lower heating values of other calorific materials (eg sewage sludge, waste, etc.).
Visualization and Measurement of Distribution of Heat Flows
Measurement and visualization of heat flux from surfaces for determination of heat loss, its location, insulation efficiency.
Measurement of Fluid Flow and Speed in the Pipelines
Measurement of liquid flow and speed in the pipelines through a transparent window in case of scientific research and operating conditions.
Determination of smoke components
Determination of composition of combustion products (CO, CO2, NO, NOx, CiHy, O2, SO2) for the evaluation of the efficiency of thermal equipment, fuel combustion rate, emissions to environment under research and operational conditions; optimization of device operating regimes.
Determination and analysis of low concentration elements in fuels
Determination of fuel elements in order to assess the fuel quality indicators and possible environmental pollution with harmful elements.
Measurements of air velocity and its pulsations
Measurement of air flow characteristics in scientific research and practical applications.
Sample weighing of solid and liquid fuels, including biofuels and recovered fuels, during the analysis of fuel humidity and ash content
Precise measurements of fuel humidity and ash content, assessment of fuel quality indicators and combustion rate.
Non-invasive fluid (heat carrier) flow measurement
Non-invasive measurements of flow rates in pipelines (25 ... 1500 mm) under laboratory and operational conditions.
Analysis of key chemical elements of solid and liquid fuels, including biofuels and recovered fuels
The determination of the chemical elements C/H/N/S and O in the fuel, evaluation of its qualitative and quantitative indicators.
Determination of components in combustion products
The determination of composition (CO, CO2, NO, NOx, CiHy, O2, SO2) of combustion products for the evaluation of the efficiency of thermal equipment, fuel combustion and emissions to the environment.
The investigations of the movement of particulates in macroflows of liquids and gases and the interaction of flows with surfaces and flow around bodies. Visualization of mixing flows in the channels.
The scientific research of visualization of the internal flow structures in the channels and flow aroud of various bodies and surfaces.
Measurements of very small air (gas) flows. Flow measurements through membranes.
The measurements of air (gases) volumes transmitted through membranes, filters, dosing devices; volumetric calibration.
Determination of calorific value and analysis of solid and liquid fuels, including biofuels and recovered fuels
The determination of the upper and lower calorific values and analysis of solid and liquid fuels, including biofuels and recovered fuels.