Pakalka, S., Donėlienė, J., Rudzikas, M., Valančius, K., & Streckienė, G. (2025). Development and experimental investigation of hybrid phase change material thermal energy storage prototype by utilising power-to-heat concept. Applied Thermal Engineering, 126377.
https://doi.org/10.1016/j.applthermaleng.2025.126377
We create great technology
Research and development of innovative energy storage technologies
Numerical modeling of the heat transfer process
Experimental research of the heat transfer process
Synthesis and characterization of new materials
Department of
Energy Storage
Research and development of innovative energy storage technologies;
Numerical modeling of the heat transfer process;
Experimental research of the heat transfer process;
Synthesis and characterization of new materials.
Contact person: Dr. Saulius Pakalka
E-mail: s.pakalka@protechnology.lt
PCM TES Prototypes
Publications
Pakalka, S.; Donėlienė, J.; Rudzikas, M.; Valančius, K.; Streckienė, G. Development and experimental investigation of full-scale phase change material thermal energy storage prototype for domestic hot water, J. Energy Storage. (2024).
https://doi.org/10.1016/j.est.2023.110283
Donėlienė, J.; Fataraitė-Urbonienė, E.; Danchova, N.; Gutzov, S.; Ulbikas, J. The influence of the precursor’s nature and drying conditions on the structure, morphology, and thermal properties of TiO2 aerogels // Gels, MDPI, 2022, vol. 8, , iss. 7, art. no. 422, p. 1-16. https://doi.org/10.3390/gels8070422
Donėlienė, J.; Fataraitė-Urbonienė, E.; Rudzikas, M.; Pakalka, S.; Danchova, N.; Ulbikas, J. Effect of precursor nature and sol-gel synthesis conditions on TiO2 aerogel’s structure, Molecules. 26 (2021). https://doi.org/10.3390/molecules26165090.
Presentations at Conferences
Kandamkarikkal M., Y.; Vėžys, J.; Donėlienė, J.; Fataraitė Urbonienė, E.. Comparison of surface roughness parameters of abraded polymer materials of different softness // Advanced materials and technologies: book of abstracts of 26th international conference-school, 26-30 August 2024, Palanga, Lithuania. Kaunas : Kaunas University of Technology. ISSN 2669-1930. 2024, P57, p. 92. doi: 10.5755/e01.2669-1930.2024
Mačiulis, V.; Fataraitė-Urbonienė, E.; Pakalka, S. „BIO4EEB- BIO Insulation materials for Enhancing the Energy Performance of Buildings“// Advanced materials and technologies: book of abstracts of 26th international conference-school, 26-30 August 2024, Palanga, Lithuania. Kaunas: Kaunas University of Technology. ISSN 2669-1930. 2024, P58, p. 93, doi: 10.5755/e01.2669-1930.2024
Donėlienė, J.; Pakalka, S.; Fataraitė-Urbonienė, E.; Ulbikas. J. Photocatalytic Activity of TiO2 Aerogels Prepared by Sol-Gel Synthesis and Different Drying Methods// 21st Int. Conference on Nanosciences & Nanotechnologies (NN24):book of abstracts, 2-5 July, 2024 Thessaloniki, Greece, p. 123. https://www.nanotexnology.com/2024/images/stories/food/NN24_PROGRAM.pdf
Donėlienė, J.; Pakalka, S.; Fataraitė-Urbonienė, E.; Ulbikas J. Influence of subcritical dried SiO2 aerogels on thermal conductivity of thermal insulation// 22nd International Sol-Gel conference, 1 – 6 September 2024, Berlin, Germany. International Sol-Gel Society. 2024, p. 281. https://premc.org/doc/SolGel2024/Solgel2024_BOA.pdf
Projects
BIO insulation materials for Enhancing the Energy performance of Buildings (BIO4EEB)
EFFIHEAT-DEMO
EFFIHEAT
Infrastructure & Services

Description
Performance monitoring: temperature, pressure, mass flow rate, heat transfer rate, energy
Simulation of different thermal energy storage charging and discharging modes
Validation of analytical and numerical models
Technical specification
Coriolis mass flow rate meter, accuracy ±0.15%, maximum flow rate 1.81 kg/s
Temperature sensors PT100, class B, accuracy ± (0,3 + 0,005·t) °C
Pressure sensors for liquids and gases, maximum pressure 0-600 kPa, accuracy ±0.5%
Description
Phase change materials (PCMs) phase transitions and melting enthalpies determination
Technical specification
Temperature range: -180°C to 700°C
Heating rates: 0.001 K/min to 200 K/min