Basic studies completed in 2001. at the University of Novi Sad, Serbia, Faculty of Technical Sciences, Department of Energy and Process Engineering. Magisterial degree defended in 2010, also at the Faculty of Technical Sciences in field: Computing and Control, Department of Automatic Control and Systems. PhD thesis defended in 2014 at the Department of Energy and Process Engineering - Faculty of Technical Sciences.
Since December 2001 year employed at the Thermal Engineering Division, Department of Energy and Process Engineering, Faculty of Technical Sciences. Participated / participates in teaching the subjects: Thermodynamics, Heat Transfer, Measurement and control, Refrigeration and Renewable energy at the Department of Energy and Process Engineering, Process Engineering at the Department of Environmental Protection and Measurement, control and management of the Department of Industrial Engineering and Engineering management.
He is a teacher in several PhD courses in the Mechanical Engineering study program.
From 2019 he is chosen in the title Associate Professor.
Since 2015. holds the position of Director of the Department of Energy and Process Engineering.
At the same time he has worked as an scientific researcher at the Department of Energy and Process Engineering, Faculty of Technical Sciences. Involved in developing a number of scientific projects, energy audits, preparation of technical documentation, feasibility studies, elaborates, revisions of projects, execution and processing of the results of industrial measurement and testing, etc. The primary area of research is the analysis of energy efficiency, energy balancing, measurement and management of energy systems, audits in buildings and industrial production systems.
Author of papers on conferences and journals of national and international importance. Co-author of a university book in editions of Technical Sciences - Faculty of Technical Sciences.
() Monographic study/chapter in M12 or research in the thematic collection of the international importance
Kljajić M.: Application of renewable energy sources in school, gym and kindergarten buildings, Beograd, Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, 2019
() Monographic study/chapter in M12 or research in the thematic collection of the international importance
Kljajić M.: Typology of school gyms in the Republic of Serbia, Beograd, Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, 2019
() Monographic study/chapter in M12 or research in the thematic collection of the international importance
Petrović J., Gvozdenac D., Kljajić M.: Pedeset godina toplifikacije Subotice, Subotica, Printex, Subotica, 2014, ISBN 978-86-917343-0-5
() Researches published in the journals of the international importance
Mujan I., Anđelković A., Munćan V., Kljajić M., Ružić D.: Influence of Indoor Environmental Quality on human Health and Productivity - A Review, Journal of Cleaner Production, 2019, Vol. 217, No Aprli, pp. 646-657, ISSN 0959-6526
() Researches published in the journals of the international importance
Kljajić, M., Andelković, A., Mujan, I.: Assessment of relevance of different effects in energy infrastructure revitalization in non-residential buildings, Energy and Buildings, 2016, Vol. 116, pp. 684-693.
() Researches published in the journals of the international importance
Andelković, A., Gvozdenac-Urošević, B., Kljajić, M., Ignjatović, M.G.: Experimental research of the thermal characteristics of a multi-storey naturally ventilated double skin fac¸ade, Energy and Buildings, 2015, Vol. 86, pp. 766-781.
() Researches published in the journals of the international importance
Kljajić, M., Gvozdenac, D., Vukmirović, S.: Use of Neural Networks for modeling and predicting boiler's operating performance, Energy, 2012, Vol. 45, No. 1, pp. 304-311.
() Research published in the top international journal
Kljajić M., Anđelković A., Munćan V. Hasik V., M. Bilec.: Shallow geothermal energy integration in district heating system: An example from Serbia, Renewable Energy, 2020, Vol. 147, pp. 2791-2800, ISSN 0960-1481
() Research published in the prominent international journal
Lazarević S., Čongradac V., Anđelković A., Kljajić M., Kanović Ž.: District heating substation elements modeling for the development of the real-time model, Thermal Science, 2019, ISSN 0354-9836
() Research published in the prominent international journal
Andjelković, A., Petrović, J., Kljajić, M.: Double or single skin façade in a moderate climate an energyplus assessment, Thermal Science, 2017, Vol. 21 No. 1, pp. 1501-1510.
() Research published in the prominent international journal
Gvozdenac, D., Kljajić, M.V., Gvozdenac-Urošević, B.: Serbian energy efficiency problems, Thermal Science, 2014, Vol. 18, No. 3, pp. 683-694.
() Research published in the international journal
Kljajić, M., Andjelković, A., Gvozdenac, D.: Viability analysis of heat recovery solution for the industrial process of roasting coffee, Thermal Science, 2016, Vol. 20, pp. 623-637.
() Research published in the international journal
Andjelković, A., Petrović, J., Kljajić, M.: Double or single skin façade in a moderate climate an energyplus assessment, Thermal Science, 2016, Vol. 20, pp. 1501-1510.
() Research published in the international journal
Kljajić, M., Gvozdenac, D.: Assessment of boiler's operating performance in different energy sectors in the province of vojvodina, Thermal Science, 2012, Vol. 16, Suppl. 1, pp. 107-114.
() Research published in the international journal
Kljajić, M., Petrović, J.: Applicability assessment of central and solar hot water systems integration in Serbia, Thermal Science, 2012, Vol. 16 Suppl. 1, pp. 173-188.
() Research published in the leading journal of the national importance
Petrović J., Anđelković A., Kljajić M., Đaković D.: Primena modela ISGE/ISEMIC na Fakultetu tehničkih nauka u Novom Sadu, Klimatizacija, grejanje, hlađenje, 2013, Vol. 42, No. 1, pp. 61-68, ISSN 0350-1426