About us

A Szentágothai János Kutatóközpont a PTE korszerű, nemzetközi tudományszervezési és menedzsment normák szerint kialakított új intézménye, amely az élettudományi, élettelen természettudományi, valamint környezettudományi oktatás...



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Energia Design Building Technology Research Group

  • Research concept
  • Members
  • Publications
  • Awarded projects
  • R and D results
  • Services
  • Laboratories, instruments
  • Galéria
  • Student awards

The main research aims of the group are the evolution of a new generation of buildings and settlements concerning environmental, climatic, comfort and energy saving methods. To achieve this we use and  develope comfort (light, heat, ari quaility), energy and numerical aerodynamic simulations. Within this a special aim is to create a guideline for architects and mechanical engineers for the design of natural ventilation in buildings. The other most important project of the group is to improve our registred trademark - the Energy Design Method for buildings with plus energy balances. In the next stage a new method will be created - Energy Design Synthesis - with the help of artificial inteligence based mathematical solutions and simulation series. As a result the EDS can help the designers and architects to create a guaranteed optimal eco-friendly house with the given circumstances.

The closed office façade concept

Based on the regular dimensions of the Szentágothai Research Centre (SRC), building ‘A’, a comprehensive investigation aims to test an introverted building design concept: with closing the external building envelope (without external windows) largest part of solar loads in summer as well as heat losses in winter are to be reduced. Internal courtyard(s) or atria should provide the necessary natural lighting and ventilation. The interior possesses open an office environment as a multifunctional co-working space. As an effect of this strategy, the daylight autonomy of the interior can suffer due to reduced wall-window ratio (WWR) of the façade. Crucial question is to clarify the contradiction between daylight comfort reduction vs. thermal comfort improvement as well as rising lighting energy demand against decreased heating and cooling requirement. Though a sensitivity analysis, different courtyard/atria dimensions and geometries, building sizes and shapes are calculated via thermal simulations. Goal is to firstly define solutions for courtyard and building dimensions and shapes, which can satisfy higher comfort and energy requirements by simultaneously conserving great amount of energy consumption – compared to today’s conventional modern offices.

Ph.D. research topic of Mohammad Reza Ganjali.

Optimisation of the SZRC facility’s energy efficiency and thermal and visual comfort

The zero step is to absolve an exhaustive simulation model validation, using mathematical statistics as (CV)RMSE, NMBE, etc. First, the HVAC system is to be further developed by simplifying the existing complicated systems, as well as applying sophisticated automation system to operate the services systems (heating and cooling units in the rooms, mechanical ventilation, lighting) in a considerably more efficient way.  Secondly, implementing sophisticated combinations of passive ventilation, modified WWR, improved thermal mass and shading shows the potential that hides behind the development possibilities. A sensitivity analysis helps to assess and evaluate the most affecting factors on energy efficiency and comfort.


Approx. 50% of the world energy consumption is related to buildings and building industry. The EDS methodology guarantees optimal buildings in terms of comfort and energy by making use of artificial intelligence (AI) techniques, as the synthesis based P-graph framework, back tracking algorithms. Complex building physics simulations support the method. The next step is to apply the opaque (garage) and transparent (greenhouse) building parts to the already developed family house building models to complete the integration of all passive strategies based building design factors. Thereafter, the services systems need to be combined with the elaborated passive building model versions. Heat transfer and heat generation systems as well as energy sources are modelled in the previously built thermal simulation models The definition of all feasible model combinations, having the potential being optimal building in comfort and energy is complemented by theoretical and applied mathematicians (Prof. Dr. Ferenc Friedler, Dr. Zsolt Ercsey). Lastly, optimal automation of all passive and active systems is modelled in the same optimum finding modelling process, considering all related alternatives. A sophisticated evaluation system is developed, to enable free eligible preferences between thermal and visual comfort (daylight factor, daylight autonomy, annual solar exposure), air hygiene (CO2-concentration), heating, cooling, lighting and ventilation energy demand, construction investment costs, life cycle assessment (LCA). The gained complete model sample collection includes all relevant comfort, energy and LCA performance, linked to their according architectural, physical as well as technical properties (attributes). By learning from the interdependencies between the performance results and the model attributes new learning rules are derived, which, integrated into the design method’s algorithm, will be capable to automatically decide between planning steps and alternative solutions. In this way an automated intelligent algorithm can create optimal building designs under particular input task circumstances. A software development is foreseen.

Ph.D. research topic of Kristóf Horváth.

EDS methodology application in office building generation

In an 8 000 m2 office building design elaboration, comfort and energy optimum search will be carried out among more than 6 000 created building configurations using thermal simulations to assess building physics performances.

Ph.D. research topic of Dóra Zetz.

Design guide for passive ventilation and cooling in industry buildings

The research focusses on various roof and chimney-tower structure development to enable and improve the natural ventilation (NV) rate and the night cooling effect in industry halls under moderate climate conditions. This makes it possible to save considerable amount of operation energy and financial expenses. The passive air conduction system (PACS) is developed in a systematic manner using aerodynamic similarity principles and scaling laws, providing a broad range of solutions among ventilation tower and ventilation roof structure geometries, sizing calculation methods for number and dimension of the ventilation elements. Additionally, the optimal (efficient) spatial arrangement of the ventilation structures will be defined as well to ensure maximum airflow rates. The fluid mechanics calculations are carried out in the framework of CFD simulations using ANSYS Workbench.

Ph.D. research topic of Ádám Katona.

Modular, environmental friendly and pre-fabricated family house development

Development of a modular, environment friendly, extendable residential and community building with net zero and energy-positive balance potential, using prefabricated wooden structures for rapid construction purposes (approved GINOP grant project). As a result of the applied synthesis (ENERGY DESIGN 2.0) and thermal simulations based R+D 1st phase, 2 family house are to be elaborated in a modular building structure system for an industrial prefabricated wood technology. With use of dynamic thermal simulations structures, building materials as well as HVAC system variations will be tested and the optimum combinations between them clarified. Final construction plans must be developed and planned on the basis of the 1st and 2nd R+D phases. In addition, building services systems, electrical and civil engineering design work package is also involved in the process. With help of thermal simulations, an efficient energy management and operation guide will be elaborated for smart and sustainable running of the mechanical and electrical systems and the natural ventilation.

Dr. Zsolt Ercsey
associate professor
Dr. Bálint Baranyai
assistant professor
Dr. István Háber
assistant professor
Modar Ali
PhD student
Sara Elhadad
PhD student
Twana Rasool Fattah
PhD student
Rojhat Ibrahim
PhD student
Sonia Ibrahim
PhD student
Ádám László Katona
PhD student
Basma Naili
PhD student


B. Naili, I. Haber, I. Kistelegdi; Simulation-supported design of high-rise office building envelope; Pollack Periodica 17.1 (2022) https://doi.org/10.1556/606.2021.00253 (Q3)

D. Androsics-Zetz, I. Kistelegdi, Zs. Ercsey; Algorithmic Generation of Building Typology for Office Building Design; Buildings 12 (7) (2022) https://doi.org/10.3390/buildings12070884 (Q1-D1)

S. Attia, J. Kurnitski, P. Kosiński, A. Borodiņecs, Zs. Deme Belafi, I. Kistelegdi, H. Krstić; M. Moldovan, I. Visa, N. Mihailov; Overview and future challenges of nearly zero-energy building (nZEB) design in Eastern Europe; Energy and Buildings 267 (2022) https://doi.org/10.1016/j.enbuild.2022.112165 (Q1-D1)

R. Ibrahim, S. Elhadad, B. Baranyai, T. J. Katona; Impact Assessment of Morphology and Layout of Zones on Refugees’ Affordable Core Shelter Performance; Sustainability 14(18) (2022) https://doi.org/10.3390/su141811452 (Q1)

I. Kistelegdi, K.R. Horváth, T. Storz, Zs. Ercsey; Building Geometry as a Variable in Energy, Comfort and Environmental Design Optimization—A Review from the Perspective of Architects; Buildings 12 (1), (2022) https://doi.org/10.3390/buildings12010069 (Q1-D1)

A. Katona, I.E. Háber, I. Kistelegdi; CFD Simulation Supported Development of Wind Catcher Shape Topology in a Passive Air Conduction System (PACS); Buildings 12 (10), (2022) https://doi.org/10.3390/buildings12101583 (Q1-D1)


R. Ibrahim, B. Baranyai; Developing migrants prototypes performance through bottom-up construction method, Pollack Periodica 16(3) (2021) https://doi.org/10.1556/606.2021.00392 (Q3)

I.E. Háber, G. Bencsik, B Naili, I. Szabó; Building thermal capacity for peak shifting, based on PV surplus production; Pollack Peroidica 16.2 (2021) 117-123. https://doi.org/10.1556/606.2020.00207 (Q3)

M. R. Ganjali Bonjar, B. Baranyai, K. R. Horváth, I. Kistelegdi; Passive system optimization in office buildings using a reference testbed building, Pollack Periodica, 16.2 (2021) 124-129, https:/doi.org/10.1556/606.2020.00212 (Q3)

M. R. Ganjali Bonjar, B. Baranyai, K. R. Horváth, I. Kistelegdi; Analysis of active system operation optimization in large scale office buildings, Pollack Periodica, 16.2 (2021) 130-135, https:/doi.org/10.1556/606.2020.00209 (Q3)

M. Rais, A. Boumerzoug, B. Baranyai, Energy design performance diagnosis for existing Algerian residential buildding facade in the hot and dry climate, Pollack Periodica 16.2 (2021) 136-142. https://doi.org/10.1556/606.2020.00204 (Q3)

M. Ali, I. Kistelegdi; "Cube house" refurbishment in Hungary - a simulation based approach; Pollack Periodica 16.2 (2021) 156-162. https://doi.org/10.1556/606.2021.00271 (Q3)

I.E. Háber, M. Tóth, R. Hajdú, K. Háber, G. Pintér; Exploring public opinions on renewable energy by using conventional methods and social media analysis, Energies 14 (11) (2021) 3089 https://doi.org/10.3390/en14113089 (Q2)

Á.L. Katona, I.E. Háber, I. Kistelegdi, Comparison of downdraught and up draft passive air conduction systems (PACS) in a winery building; Buildings 11 (6) (2021) 259; https://doi.org/10.3390/buildings11060259 (Q1-D1)

M. Ali, Á.l. Katona, I. Kistelegdi, CFD investigation of natural ventilation in a family house in Hungary, Open Access proceedings Journal of Physics: Conference series, 2069 (2021)  https://doi.org/10.1088/1742-6596/2069/1/012095 (Q4)

S. Elhadad, Z. Orban, A Sensitivity Analysis for Thermal Performance of Building Envelope Design Parameters, Sustainability 13 (24) (2021) 14018; https://doi.org/10.3390/su132414018 (Q2)

R. Ibrahim, B. Baranyai, Developing migrants prototypes performancethrough bottom-up construction method, Pollack Periodica 16.3 (2021) 127-132; https://doi.org/10.1556/606.2021.00392 (Q3)


T. Androsics, B. Baranyai, Optimized room arrangement and building shaping of an industrial and office facility, Pollack Period. 15 (2020) 199–210. https://doi.org/10.1556/606.2020.15.2.18 (Q3)

K.R. Horváth, I. Kistelegdi, Award winning first Hungarian active house refurbishment, Pollack Period. 15 (2020) 233–244. https://doi.org/10.1556/606.2020.15.2.21 (Q3)

M. Rais, S. Elhadad, A. Boumerzoug, B. Baranyai, Optimum window position in the building facade for high day-light performance: empirical study in hot and dry climate, Pollack Period. 15 (2020) 211–220. https://doi.org/10.1556/606.2020.15.2.19 (Q3)

D.N. Zetz, I. Kistelegdi, Comfort simulation supported sketch plan optimization of the university of Pécs, Medical School Extension, Pollack Period. 15 (2020) 166–177. https://doi.org/10.1556/606.2020.15.2.15 (Q3)

D.N. Zetz, I. Kistelegdi, Energy simulation supported skecth plan optimization of the university of Pécs, Medical School Extension, Pollack Period. 15 (2020) 178–186. https://doi.org/10.1556/606.2020.15.2.16 (Q3)

Á.L. Katona, H. Xuan, S. Elhadad, I. Kistelegdi, I.E. Háber, High-Resolution CFD and In-Situ Monitoring Based Validation of an Industrial Passive Air Conduction System (PACS), Energies. 13 (2020) 1–23. https://doi.org/doi:10.3390/en13123157 (Q1)

S. Elhadad, C.H. Radha, I. Kistelegdi, B. Baranyai, J. Gyergyák, Model Simplification on Energy and Comfort Simulation Analysis for Residential Building Design in Hot and Arid Climate, Energies. 13 (2020) 1876. https://doi.org/doi:10.3390/en13081876 (Q1)

A. Vincze, N.H. Baranyai, H. Zsiborács, S. Csányi, I. Háber, G. Pinté, Communicating renewable energy in the national action plans of the member states of the European Union, Sustain. 12 (2020) 1–24. https://doi.org/10.3390/su12030970 (Q2)

S. Ibrahim, M. Ali, B.Baranyai, I. Kistelegdi; Simulation-based analysis of earthen heritage architecture as responsive refugee shelters (case study: domes of Northern Syria); The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences; Vol. XLIV-M-1-2020; (2020) 365-372; https://doi.org/10.5194/isprs-archives-XLIV-M-1-2020-365-2020;

C.A. Hama Radha, S. Elhadad, I. Kistelegdi, Integrated Strategies for Sustainable Urban Renewal in Hot and Dry Climate. New Metropolitan Perspectives (2020) 913-924; https://doi.org/10.1007/978-3-030-48279-4_86 (NR)


G. Tsovoodavaa, I. Kistelegdi, Comparative analysis for traditional yurts using thermal dynamic simulations in Mongolian climate, Pollack Period. 14 (2019) 97–108. https://doi.org/10.1556/606.2019.14.2.9 (Q3)

P. Ahmeti, I. Kistelegdi, Energy consumption by the type of energy carrier used in residential sector in city of Pristina, Pollack Period. 14 (2019) 201–212. https://doi.org/10.1556/606.2019.14.1.20 (Q3)

M.S. Albdour, B. Baranyai, Impact of street canyon geometry on outdoor thermal comfort and weather parameters in PÉCS, Pollack Period. 14 (2019) 177–187. https://doi.org/10.1556/606.2019.14.3.17 (Q3)

M.S. Albdour, B. Baranyai, Numerical evaluation of outdoor thermal comfort and weather parameters in summertime at Széchenyi square, Pollack Period. 14 (2019) 131–142. https://doi.org/10.1556/606.2019.14.2.12 (Q3)

M.S. Albdour, B. Baranyai, Water body effect on microclimate in summertime: A case study from PÉCS, Pollack Period. 14 (2019) 131–140. https://doi.org/10.1556/606.2019.14.3.13 (Q3)

D. Zhao, B. Bachmann, T. Wang, ‘Beautiful China’ Project: A development proposal for non-heritage rural areas in North China, Pollack Period. 14 (2019) 235–246. https://doi.org/10.1556/606.2019.14.1.23 (Q3)

M.S. Albdour, B. Baranyai, An overview of microclimate tools for predicting the thermal comfort, meteorological parameters and design strategies in outdoor spaces, Pollack Period. 14 (2019) 109–118. https://doi.org/10.1556/606.2019.14.2.10 (Q3)

C. Xiaohui, G.B.M. Reza, G. Tsovoodavaa, R.R.L. Shih, B. Baranyai, Comfort and energy performance analysis of a heritage residential building in Shanghai, Pollack Period. 14 (2019) 189–200. https://doi.org/10.1556/606.2019.14.1.19 (Q3)


P.M. Máder, O. Rák, I.E. Háber, Contemporary architecture based on algorithms, Pollack Period. 13 (2018) 53–60. https://doi.org/10.1556/606.2018.13.3.6 (Q3)

S. Elhadad, B. Baranyai, J. Gyergyák, The impact of building orientation on energy performance: A case study in New Minia, Egypt, Pollack Period. 13 (2018) 31–40. https://doi.org/10.1556/606.2018.13.3.4 (Q3)

G. Tsovoodavaa, R.R.L. Shih, M.R.G. Bonjar, I. Kistelegdi, A review and systemization of the traditional Mongolian yurt (GER), Pollack Period. 13 (2018) 9–30. https://doi.org/10.1556/606.2018.13.3.3 (Q3)

D. Zhao, B. Bachmann, T. Wang, Architecture and landscape design for Beikanzi Village in China: An investigation of human settlement and environment, Pollack Period. 13 (2018) 231–236. https://doi.org/10.1556/606.2018.13.2.22 (Q3)

D. V. Ravina, M.C.Y. Ruz, R.R.L. Shih, I. Kistelegdi, Bakwitanan: Design of a blackboard convertible to an evacuation center partition by participative design method, Pollack Period. 13 (2018) 195–206. https://doi.org/10.1556/606.2018.13.2.19 (Q3)


P. Ahmeti, I. Dalipi, A. Basha, I. Kistelegdi, Current heating energy demand by the residential sector in city Prishtina based on the main resources, Pollack Period. 12 (2017) 147–158. https://doi.org/10.1556/606.2017.12.1.12 (Q3)

  • GINOP 2.1.2 Developing of modular system based, environmental friendly, expandable, quickly constructable domestic and public prefabricated houses with zero and plus energy balances. 60,600,- EUR
  • MVH VP3-4.2.2-16 tender 560,400 EUR aerodynamical winery
  • MVH VP3-4.2.2-16 pályázat 500,000 EUR production hall of aerodynamical winery
  • Solar Decathlon Europe 19 international university competition in innovative homebuilding: 5 db díj
  • Prototype Hungarian detached family house refurbishment into energy-positive smart home.
  • Paks, Office building and Conference room, with moving adaptive building envilope structure
  • Holcim Awards 2011
  • Active House award 2017
  • E.ON. Energy Globe Award 2017
  • Pro Architectura 2017
  • Gábor Dénes Award 2015,
  • Visual, thermal comfort, energy modeling and optimiziation in all kind of buildings and functions (dynamic simulations)
  • Building energy consumption advising
  • Numerical aerodynamic (CFD simulations for detailed climate, comfort and energy modeling
  • Architectural design
  • Education of all above

2 laboratories for simulations - with 10 PC simulation stations

ANSYS 17.2 aerodynamical simulation software package

IDA ICE 4.8 dynamic thermal simulation software

TRNSYS  18 simulation software for tranzient processes

WINWATT 8.23 building energy software

Rhino 5.0 Grashopper - parametrical CAD and simulation software package

Meteonorm 7.0 meteorológical database

Testo 480 - Digital temperature, humidity and air flow meter

Testo 882 Thermal Imager

Building climate and energy monitoring system (Mobile Monitoring System - MMS)

  • 1 pc central server
  • 4 pcs DATE collector and processors (National Instruments CompactRIO)
  • 1 pc Labview based software
  • Power measurement
    • 27 pcs Electric power meters (LEGRAND LGR04686)
  • Temperature and Humidity measurment
    • 9 pcs exterior temperature and humidity meters (TESTO 6621)
    • 24 pcs interior temperature and humidity meters (TESTO 6621)
    • 8 pcs surface temperature meters (TESTO 6055/0600 9999)
    • 2 pcs globe temperature meters (TESTO 6055/0600 9999)
  • CO2 measurement
    • 5 pcs CO2 meter (TESTO SenseAir)
  • Caloria measurement
    •  6 pcs calorimetershőmennyiség-mérő (SONTEX Supercal 531 és 539)
  • Geothermal measurement
    •  44 pcs air temperature meters
    • 19 pcs temperature meters
    • 2 pcs data processor units (BITEL BiiOS CPI-01/LPI-01/IOM6W-01)
  • Airflow measurment
    • 20 pcs airflow meters (KIMO Debimo)
    • 3 pcs differential pressure transmitter (KIMO CP 200)
  • Meteorology
    • 1 pc complex meteorological station (VAISALA XT 520)
  • Anemometry
    • 1 pc data collector PC
    • 1 pc data processor unit (DANTEC ComforSense)
    • 12 pcs anemometers (DANTEC)

The Research Group


The office

Student awards:

OTDK II. award - Csaba Grócz - 2017

OTDK special award - Ádám László Katona - 2017

Obtained PhD degree:

Chro Ali Hama Radha - 2018

Rowell Ray Shih - 2019

Tsocoodavaa Gantumur - 2019

Petrit Ahmeti - 2019

Mohammad Suleiman Albdour  - 2019

Messaouda Rais - 2020

Mohammad Reza Ganjali Bonjar - 2021

Kristóf Roland Horváth - 2022

Dóra Nóémi Androsics-Zetz - 2022

Obtained DLA degree:

Tamás Androsics - 2020

Prof. Dr. István Kistelegdi
Research Group Leader
 +36 30 517 2617; +36 72 501 500/29 034