Thermo Energy Systemes

Laboratory for Heat and Power (LTE) at UL FME has a long tradition of cooperation with all the largest Slovenian thermal power plants and energy intensive industry, including steelworks, paper mills and tanneries. It is involved in the independent supervision of any upgrades, energy optimisations and new builds as well as thermo-economical studies of new projects. Our experts possess comprehensive knowledge of the Slovenian energy supply system, alongside the specific requirements of industry partners.

We are also the Technical Support Organisation (TSO) accredited by the Slovenian Nuclear Safety Administration for the supervision and safety analysis of nuclear facilities. We specialize in the operation of turbomachinery and other thermoenergetic components (e.g. steam generators, water heaters, MSRs).

• Field Measurements of Large Energy Systems
  • Grid measurements of flue gas temperature 
  • Grid measurements of flue gas composition (CO₂, O₂, NO, CO)
  • Grid measurements of pressure
  • Coal milling quality
  • Ultra-Sonic flow measurement
  • Coal, oil and gas composition measurements (external contractors)
  • Electric Power Output (external contractors)
• Thermodynamic Analysis of Thermal Systems
  • Heat process modelling
  • Performance tests (steam boilers, steam and gas turbines, heat exchangers, complete power systems)
  • Process optimization
  • Design of physical models of the thermo energy system in IPSEpro software (commercial license)
• Expert Opinions
• In scope of TSO activities for Slovenian Nuclear Safety Administration

Contact: prof. dr. Mihael Sekavčnik (mihael.sekavcnik@fs.uni-lj.si, personal page)

Nuclear Power Plants:

KONČAR, Mihael Boštjan, KUŠTRIN, Igor, SEKAVČNIK, Mihael. Independent report on pre-reblading steam turbine test. Ljubljana: Faculty of Mechanical Engineering, 2024.

KUŠTRIN, Igor, SEKAVČNIK, Mihael. Analysis of secondary system operating parameters after replacement of high pressure turbine : Nuclear Power Plant Krško. Ljubljana: Faculty of Mechanical Engineering, 2023.

LESKOVEC, Rok, IGLIČ, Mladen, KUŠTRIN, Igor, SEKAVČNIK, Mihael, BILIĆ-ZABRIC, Tea, ŽELEZNIK, Nadja, NAGODE, Klemen. Capability of the Krško Nuclear Power Plant to participate in primary frequency regulation : a comparative analysis : Study No 2333. Ljubljana: Elektroinštitut Milan Vidmar, 2016.

KUŠTRIN, Igor, TUMA, Matija. Krško Nuclear Power Plant heat balances verification and design efficiency determination. Revision no. 1. Ljubljana: Faculty of Mechanical Engineering, Laboratory for Heat and Power, 2000.

Expert Opinions:

SEKAVČNIK, Mihael, KONČAR, Mihael Boštjan. Expert Statement for reactor re-criticality after 2024 outage and refueling after the 33rd fuel cycle at the Krško Nuclear Power Plant. Ljubljana: Faculty of Mechanical Engineering, 2024.

SEKAVČNIK, Mihael, KONČAR, Mihael Boštjan. Expert assessment of repair works, interventions and tests during the regukar outage of the Krško Nuclear Power Plant for fuel change at the end of the thirty-third fuel cycle. Ljubljana: Faculty of Mechanical Engineering, 2024.

Combine Cycle Plants (Gas-Steam):

KUŠTRIN, Igor, SEKAVČNIK, Mihael (author, project manager). Design of the measurement of the power production and consumption of a gas-steam unit : Energetika Ljubljana-enota TE-TOL (januar 2021). Ljubljana: Faculty of Mechanical Engineering, 2021.

Cogeneration Plants:

KUŠTRIN, Igor. Thermal Tests of TETOL Unit 1 at Low Power. Ljubljana: Fakulteta za strojništvo, 2021.

KUŠTRIN, Igor, SEKAVČNIK, Mihael. Analysis of the yearly efficiency from 2017 to 2019: Energetika Ljubljana (november 2020). Ljubljana: Faculty of Mechanical Engineering, 2020.

KUŠTRIN, Igor, OMAN, Janez. Analiza vzrokov neustreznega delovanja regulacije pretoka sekundarnega zraka : termoelektrarna Trbovlje : končno poročilo. Ljubljana: Fakulteta za strojništvo, LTE, 2006.

KUŠTRIN, Igor. Izračun vhodnih podatkov za modeliranje širjenja emisij iz plinsko-parne enote : Termoelektrarna toplarna Ljubljana (april 2020). Ljubljana: Fakulteta za strojništvo, Laboratorij za termoenergetiko, 2020.

Open-Cycle Gas Turbines:

KUŠTRIN, Igor, KONČAR, Mihael Boštjan, SEKAVČNIK, Mihael. Thermal acceptance tests : gas turbine GT27 BD000753U01 : Power Plant Brestanica. Ljubljana: Faculty of Mechanical Engineering, 2024.

Coal Fired Thermal Power Plants:

KUŠTRIN, Igor. Procedure for calculation of availability. Ljubljana: Faculty of Mechanical Engineering, Laboratory for Heat and Power, 2019.

KUŠTRIN, Igor. Suitability of Banovići DEPO coal for combustion in the Unit 6 Termoelektrarna Šoštanj. Ljubljana: Faculty of Mechanical Engineering, Laboratory for Hear and Power, 2022.

KUŠTRIN, Igor, SEKAVČNIK, Mihael. Thermal tests of unit 6 performance tests, LTSA contract : Šoštanj power plant september 2021. Ljubljana: Faculty of Mechanical Engineering, Laboratory for Heat and Power, 2022.

Industrial Energetics:

KUŠTRIN, Igor. Thermoenergetic tests of stem boiler no. 1284 TPK-EPO Zagreb : Tanin Sevnica. Ljubljana: Faculty of Mechanical Engineering, 2024.

KUŠTRIN, Igor. Guarantee tests for the floating bed steam boiler and back pressure steam turbine : Količevo karton. Ljubljana: Faculty of Mechanical Engineering, Laboratory for Hear and Power, 2020.

KUŠTRIN, Igor. Maksimalna vhodna toplotna moč dveh parnih kotlov na zemeljski plin : Komunalna Energetika Nova Gorica ,15. 3. 2023. Ljubljana: Fakulteta za strojništvo, Laboratorij za termoenergetiko, 2023.

dr. Igor Kuštrin (igor.kustrin@fs.uni-lj.si, personal page)