Welcome to InnoEE-2024!

Dear colleagues, 

The 29th annual edition of the Conference of the Faculty of Power Engineering and Power Machines (FPEPM) is conducted under the name of Innovations in Energy and the Environment (InnoEE), and will be held on 14-15 May 2024. The conference is part of the Days of Science activities at the Technical University of Sofia and is conducted in strategic partnership with the European Technology and Innovation Platform on Renewable Heating and Cooling. The major theme of this year’s conference is: 

Sustainable and Affordable Energy, Environmental Comfort, and Protection of the Natural Environment

InnoEE-2024 will be a platform for sharing recent innovations, advancements and developments in the fields of energy engineering, fluids and thermofluids engineering, building services engineering, refrigeration engineering, textile engineering, and other disciplines, pertinent to the thematic sections of the conference:

  • Renewable Energy Technologies

    incl. renewable heating, cooling and power generation; solar, wind, hydro, marine, bio and geothermal energy; smart grids; energy systems engineering

  • Fluid Mechanics, Thermodynamics and Heat Transfer in Energy and Environmental Applications

    incl. advancements in thermal-fluids engineering, thermal energy storage, heat exchangers, industrial thermal processes and systems, combustion technologies, cryogenics

  • HVAC and Refrigeration Systems, Indoor Environmental Quality, and Energy Performance of Buildings

    incl. heating, ventilation and air conditioning (HVAC) systems and equipment; refrigeration technologies and the cold chain; indoor air quality; thermal comfort; energy performance of new and existing buildings; passive and nearly zero-energy buildings; bioclimatic architecture; integrated sustainable building design

  • Hydraulic and Pneumatic Machines and Equipment in Energy and Environmental Applications

    incl. advancements in the design and control of hydraulic and pneumatic components and systems

  • Nuclear Technologies and Thermal Equipment in Energy and Environmental Applications

    incl. advancements in thermal and nuclear power engineering, district heating and cooling, natural gas engineering, technical safety and risk management

  • Textiles and Clothing in Ecological and Environmental Applications

    incl. environmentally friendly materials, technologies and processing methods in the textile industry; design of sustainable clothing; nanotechnologies in textiles; smart textiles in energy-saving applications

  • Earth, Energy and Environmental Protection

    incl. pollution control in energy conversion technologies, carbon capture and storage, sustainable refrigerants, the water–energy–food nexus

The conference has established itself as a prominent scientific forum with long-lasting tradition, gathering Bulgarian and foreign experts from academia, industry and the government. It will be an excellent opportunity to present and publish your recent work, to connect with other professionals, and to make a contribution in these important fields of knowledge. Accepted papers will be published in the open access IOP Conference Series: Earth and Environmental Science and will be indexed in major worldwide databases (e.g. Scopus and WoS). The full list of databases is available here.

We invite industry partners and professional societies to support our efforts, so that together we can produce a first-rate conference with engaging presentations, exciting activities and fun events.

Explore our website for all the information you need, sign up to our newsletter for updates, and book your ticket today.

We are looking forward to meeting you soon!

Prof. Dr. Angel Terziev

Charmain of the Organising Committee,
Dean of the Faculty of Power Engineering and Power Machines, Techical University of Sofia

Thank You to Our
Sponsors and Partners
• Strategic partner •
HEXONIC
• Platinum sponsor •
Honeywell
• Gold sponsor •
Partner conferences

Learn more about the topics, events, schedule, location and venue of the conference. The detailed programme will be announced soon.

Please stay tuned for more information!

Online participants can join

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Online participants can join here!

InnoEE Live Stream

Conference Programme​

The schedule of events and activities is subject to change. (Programme correct as of 10 May 2024.)

Conference Programme

The schedule of events and activities is subject to change. (Programme correct as of 13 May 2024.)

Day 1

Tuesday 14 May 2024

Day 1

Tuesday

14 May 2024

09:30 – 12:00

10:00 – 10:15

Angel Terziev, PhD

WELCOME ADDRESS

Chairman of the Organising Committee and Dean of FPEPM • Technical University of Sofia

Ivan Kralov, PhD

WELCOME ADDRESS

Rector • Technical University of Sofia

10:15 – 11:00

Lyubomir Stoyanov

Speaker

Area Sales Manager • Hexonic

REMARKS FROM THE PLATINUM SPONSOR

Let's change the world together with InnoEE

Daniel Nikolov

Speaker

Sr. Account Manager • Honeywell

REMARKS FROM THE GOLD SPONSOR

Honeywell emissions management

11:00 – 11:30

11:30 – 12:30

Dragomir Ivanov

Speaker

CEO • Hydrogenera

KEYNOTE LECTURE

Technological solutions for production of green hydrogen

Ivaylo Blazhev

Speaker

Business Performance Director • Toyota Balkans

KEYNOTE LECTURE

Toyota: Vision for future mobility

12:30 – 13:00

13:00 – 14:00

14:00 – 15:30

Daniel Muresan

Speaker

Area Sales Manager RO & BG • Advansor • Denmark

KEYNOTE LECTURE

Future of refrigerants: Refrigeration from the perspective of the F-Gas Regulation

Florin Bode, PhD

Speaker

Associate Professor • Technical University of Cluj-Napoca • Romania

KEYNOTE LECTURE

Personalised ventilation in office buildings: A solution for improved thermal comfort, health and energy efficiency

Sanja Ercegović Ražić, PhD

Speaker

Professor • University of Zagreb • Croatia

KEYNOTE LECTURE

Benefits of recycled polymers in the context of the circular economy and sustainability in the textile industry​

15:30 – 15:45

15:45 – 17:00

Borislav Stankov, PhD

Chair

Technical University of Sofia

CONFERENCE PAPERS
Modelling indoor pollutant exposure from steady-state and pulse sources

George Pitchurov, Peter Fantke, Olivier Jolliet

Audit of opportunities for improving the energy performance of office buildings by renewable sources

Angel Penev, Stoil Rusev

Harnessing RES in the Balkan peninsula

Adi Vokshi, Denitza Zgureva-Filipova, Detelin Markov

Study of the efficiency of the joint operation of a cogeneration steam turbine with a heat pump installation

Kaloyan Hristov

A direct coupled photovoltaic-electrolyser system for generating green hydrogen

Dilyan Gavrailov, Xin Gao, Silviya Boycheva

Weather optimized PV tilt angle

Kliment Angelov

Irena Koleva

Speaker

HVAC&R Section Chair • Chamber of Engineers in Investment Design

OPINION PIECES

Towards nearly zero energy buildings

Radon: The invisible threat

17:00 – 17:15

17:15 – 18:30

Iskra Simova, PhD

Chair

Technical University of Sofia

CONFERENCE PAPERS
A sustainable approach to improve soil health: A case study for Western Bulgaria

Iskra Simova, Rositsa Velichkova, Martin Pushkarov, Alexander Stanilov

Numerical investigation of hydrokinetic turbine for utilization of river flow

Vladislav Ivanov, Rositsa Velichkova, Kiril Angelov, Martin Pushkarov, Iskra Simova

Modelling distribution of fire in flats: Case study in Bulgaria

Aleksandra Mihaylova, Rositsa Velichkova, Kamen Grozdanov

Quasi three-dimensional model as an effective tool for studying flows in turbomachines

Angel Terziev, A Potashev, E. Potasheva, I. Khisameev, Y. Valeeva, Hristo Beloev, Ilia Iliev

Towards detailed modeling of tire with a linear elastic rubber compounds using finite element method

Baurice Sylvain Sadjiep Tchuigwa, Jan Krmela, Jan Pokorny

A numerical study of the influence of the choice of rubber material behavior on the static response of tires

Baurice Sylvain Sadjiep Tchuigwa, Jan Krmela, Jan Pokorny

Ivaylo Peev, PhD

Speaker

Technical University of Sofia

PROJECT BRIEF

From Industry 5.0 to Education 5.0: Humanising technology

17:30 – 19:00

EXHIBITION OFFICIAL OPENING

Eco-aeSTHETICS 2.0: Humanising technology

Curator: Ivaylo Peev, Technical University of Sofia

The exhibition presents wood sculptures and engineering projects – kinematic sculptures, associating with topics related to the concepts of energy, aesthetics and ecology. This year the authors also add the concept of technologies, their place in the life of modern men and an attempt to humanize them. The ecological element could be seen again in the material – WOOD and its aestheticization is evident in the highly artistic interpretations and techniques used by the professional woodcarvers from “Group 9”.

20:00 – 23:00

Day 2

Wednesday 15 May 2024

Day 2

Wednesday

15 May 2024

09:30 – 12:00

10:00 – 11:00

Ivan Dimchev, PhD

Lecturer

Senior Assistant Professor • Technical University of Sofia

WORKSHOP

Determining the Seasonal Coefficient of Performance (SCOP) of air-to-water heat pumps according to EN 14825: Calculations based on local climate data

The purpose of this workshop is to demonstrate the procedure for adaptation of the data used for determining the Seasonal Coefficient of Performance (SCOP)—as provided by heat pump manufacturers—to the local climate conditions. The workshop highlights the specifics of the current national regulations transposing the EU’s Energy Performance of Buildings Directive. The lecturer will present a detailed example, based on the heating demand and local climate data for a specific building, as well as coefficient of performance data for the given water outlet temperature provided by the heat pump manufacturer.

Free admittance after registration (below). The number of seats is limited to 30.

10:00 – 11:30

Daniela Sofronova, PhD

Chair

Technical University of Sofia

CONFERENCE PAPERS
Metamerism problem in the colour recipe calculation

Anja Ludaš, Sanja Ercegović Ražić, Martinia Glogar

Regarding extension of the lifetime of lined clothing

Radka Atanasova, Magdalena Pavlova

Towards sustainable jeans production: Experimental evaluation of a denim fabric to abrasion resistance by dry fabric-to-fabric rubbing

Daniela Sofronova

Application of infrared thermography for assessment of thermal comfort when using surgery masks

Maria Dimova

Methodology for measurement with AccuFIT9000 of face masks and respirators from textile substrates

Maria Ivanova

Investigation and mathematical modelling of anaerobic biofermentation of dairy cattle manure: Influence of addition of citrus peel waste and lycoperdon perlatum spores

Anelia Tzanova, Kiril Koparanov, Elena Antonova, Daniela Minkovska, Svetlin Antonov, Bozhidar Stefanov

Study of the thermal behavior of pellets made from different waste materials

Nevena Mileva, Penka Zlateva, Vasil Radenkov

11:30 – 12:00

12:00 – 13:30

Kostadin Fikiin, PhD

Chair

Technical University of Sofia

CONFERENCE PAPERS
Comparison of VVER1000 plant respond during MSLB scenario using TRACE and RELAP computer codes

Antoaneta Stefanova, Pavlin Groudev

Evaluation of Minor Actinides Build-up in VVER Power Reactors’ Fuel Assemblies

Mladen Mitev, Kalin Filipov, Lyudmil Nedelchev

To make a coffee by bicycle riding: Achieving sustainable development in higher education institutions step by step

Asen Asenov, Kalin Filipov, Denitza Zgureva-Filipova, George Venkov, Mina Daskalova-Karakasheva

Opportunities and challenges of converting coal-fired power plants to nuclear power plants

Petar Petrov, Silviya Boycheva

Performance of diffusion absorption refrigerators at variable power input

Nina Penkova, Yordan Stoyanov, Kalin Krumov

An initial evaluation of humidified discharge cycle for liquid air energy storage

Ana Borissova, Dimityr Popov, Kaloyan Hristov

Study of physicochemical processes in the combustion chamber of a steam generator by simulation modelling

Penka Zlateva, Vasil Radenkov, Nevena Mileva, Borislav Ignatov

13:30 – 14:30

14:30 – 15:30

Angel Terziev, PhD

Chair

Technical University of Sofia

PROJECT DISSEMINATION WORKSHOP

New technologies for green energy and energy efficiency

Project № BG-RRP-2.004-0005

Project overview

Angel Terziev

Enhancing the technological process for producing biogas from animal and plant waste substrates in the southeastern region of Bulgaria

Martin Ivanov

Distributed generation and residential microgrids

Borislav Stankov

Analysing the influence of weather events on the performance of photovoltaic modules

Borislav Stankov

Cold chain innovations as a global sustainability enabler

Kostadin Fikiin

PV soiling losses and surface cleaning techniques: A review

Momchil Vassilev

CONFERENCE PAPER
Influence of internal and external air leakages on the real performance of an air handling unit with two-stage heat recovery

Ivan Dimchev

14:30 – 16:00

Alexander Mitov, PhD

Chair

Technical University of Sofia

CONFERENCE PAPERS
Model predictive control design for axial-piston pump

Alexander Mitov, Jordan Kralev, Tsonyo Slavov

Regarding the utilization of the ground level wind power potential in the area of the Dobrich region in Bulgaria

Detelin Markov, Rossen Iliev, Tsvetan Tsalov

Investigation of a cross-flow wind turbine with frontal deflector

Rossen Iliev

Investigation of a cross-flow wind turbine with a hybrid frontal guiding device

Rossen Iliev, Tsvetan Tsalov

Modelling of hydrocarbon synthesis process using barrier discharge

Iliya Iliev, Azamat Gizzatullin, Antonina Chichirova, Natalia Dmitrievna, Viktor Malanichev, Plamen Kangalov

CFD virtual prototyping of a high temperature energy storage system

Rosen Tsekov

CFD analysis of the behavior of a submersible vehicle in multiple flow directions and elevator and rudder fin configurations

Georgi Todorov, Blagovest Zlatev, Konstantin Kamberov

16:15 – 17:30

Location & Venue

The InnoEE-2024 Conference will be held at the newly renovated Building 8 of the Technical University of Sofia. The main room, where the conference sessions will take place, is the hall named after Prof. Tsvetan Lazarov, a renowned Bulgarian scientist and aviation engineer. 

The building also houses multiple brand-new laboratories of the National Center for Mechatronics and Clean Technologies. A complimentary tour of the laboratories could be provided to participants (upon request). 

Registration, exhibitions and social events will take place at the lower floor of the building. On both days lunch will be served for all participants in an area with access to the back courtyard. The farewell cocktail will also take place there. 

A dinner reception will be organised on the evening of the first conference day. The dinner reception will be held in the Stara Sofia Restaurant at Vega Hotel Sofia, located at less than 15-minute walking distance from the conference venue.

Conference venue

Please visit the Travel & Accommodation section for more information on how to reach the conference venue and the dinner reception site.

Discover Sofia

Sofia is the capital city of Bulgaria, and an important cultural and economic center in Southeastern Europe. Known in antiquity as Serdica, it is also one of the oldest settlements in the country, with history spanning several millennia.

The city's motto "Grows but does not age" reflects the combination of its rich history and present day vibrance. Visitors can enjoy numerous monuments, churches, cultural venues and events, restaurants, parks, museums, galleries, and archaeological sites, while the Vitosha mountain rising to the south provides a scenic background and a distinct character to the city. Sofia has also been proclaimed World Capital of Sport for 2024.

Sofia has a comprehensive public transportation network of bus, trolleybus, tram and underground (metro) lines. The city center and many points of interest can be easily reached from the conference venue via the M1 and M4 metro lines.

Click on Explore to visit the official tourist portal of Sofia, where you can find a lot of useful information on travel, accommodation, dining, entertainment, arts and culture, history, events calendar and much more.

Discover Sofia

Sofia is the capital city of Bulgaria, and an important cultural and economic center in Southeastern Europe. Known in antiquity as Serdica, it is also one of the oldest settlements in the country, with history spanning several millennia.

The city's motto "Grows but does not age" reflects the combination of its rich history and present day vibrance. Visitors can enjoy numerous monuments, churches, cultural venues and events, restaurants, parks, museums, galleries, and archaeological sites, while the Vitosha mountain rising to the south provides a scenic background and a distinct character to the city. Sofia has also been proclaimed World Capital of Sport for 2024.

Sofia has a comprehensive public transportation network of bus, trolleybus, tram and underground (metro) lines. The city center and many points of interest can be easily reached from the conference venue via the M1 and M4 metro lines.

Click on Explore to visit the official tourist portal of Sofia, where you can find a lot of useful information on travel, accommodation, dining, entertainment, arts and culture, history, events calendar and much more.

Explore