Luka Pajek

Luka Pajek
University of Ljubljana · Faculty of Civil and Geodetic Engineering

PhD
Looking for research collaborators.

About

31
Publications
14,998
Reads
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279
Citations
Citations since 2016
29 Research Items
279 Citations
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2016201720182019202020212022010203040506070
2016201720182019202020212022010203040506070
2016201720182019202020212022010203040506070
Introduction
“Being curious as a scientist is like being inspired as an artist – you get addicted to both, the cause and the result.” –Luka Pajek
Additional affiliations
September 2015 - present
University of Ljubljana, Faculty of Civil and Geodetic Engineering
Position
  • Research Assistant
Description
  • Teaching assistant for the following Courses: Daylight, Bioclimatic Design, Buildings and Constructional Complexes, Buildings, Efficient Energy Use, Smart House.
September 2015 - present
University of Ljubljana, Faculty of Civil and Geodetic Engineering
Position
  • Researcher
Education
October 2016 - September 2019
University of Ljubljana, Faculty of Civil and Geodetic Engineering
Field of study
  • Built environment

Publications

Publications (31)
Article
Full-text available
In recent years, the construction industry has been comprehensively focusing on energy performance of buildings and on achieving higher standards of living comfort. One of the most sophisticated ways to attain both at the same time is (re)achieving building’s climate balance by using bioclimatic design. Therefore, the main goal of this paper was to...
Article
Full-text available
Bioclimatic potential analysis is one of the starting points for bioclimatic building design. However, as climate changes are being brought into the spotlight, bioclimatic potential is being put into question as well, because traditionally used passive strategies at a specific location may no longer represent properly balanced approach. Therefore,...
Article
Full-text available
The presented study aims to clarify the implications of passive design measures on heating and cooling energy use of single-family residential buildings under European representative climates. In order to address this matter, different values of thermal transmittance (opaque and transparent), window to floor ratio, window distribution, shape factor...
Article
Full-text available
Climate change is expected to expose the locked-in overheating risk concerning bioclimatic buildings adapted to a specific past climate state. The study aims to find energy-efficient building designs which are most resilient to overheating and increased cooling energy demands that will result from ongoing climate change. Therefore, a comprehensive...
Article
Full-text available
In the early phases of building design, it is essential to quantify the relevance of passive design measures in order to assure the desired thermal performance of buildings throughout their lifespan. In the present research work, the authors investigated the relevance of the selected passive design measures for heating and cooling energy use of sin...
Article
Full-text available
Global warming will seriously affect buildings, and the Montenegrin building stock is no exception. Since the country is one of the most inefficient energy users in Europe, improving the energy efficiency of buildings is essential. Therefore, the study implemented a novel multi-aspect approach to energy retrofitting, linking building thermal perfor...
Conference Paper
Full-text available
Public policies concerning climate neutrality and climate change mitigation have been a broad topic of discussion and agreements for developed and developing economies in the last years. The building sector, responsible for approximately 40% of greenhouse gas emissions (GHG) globally, plays a significant role in meeting the climate targets. The aut...
Conference Paper
Full-text available
Shading devices represent a popular strategy for reducing cooling demand in buildings located in hot climates. However, a multi-objective approach is necessary to balance the effect of overheating prevention and adequate daylighting in buildings, especially where the activities highly depend on natural illumination. Therefore, the authors investiga...
Conference Paper
Full-text available
This study aims to investigate the bioclimatic potential of three Brazilian cities: Florianópolis-SC, Curitiba-PR and São Paulo-SP, using the BcChart tool. Hence, the bioclimatic potential is determined using Olgyay's charts to define appropriate passive building design strategies. The study compares the results obtained by two different climate fi...
Article
Full-text available
Simulation and experimental investigation of the indirect green façade (IGF) impact on thermal behaviour of buildings is presented in the paper. The study was conducted in Punat, Krk, Croatia, in the summer of 2018. The IGF reduced the incident solar radiation by up to 505 W/m2 and façade temperatures by up to 13.5 K. Experimental results were used...
Conference Paper
Full-text available
In most parts of Europe, the projected climate change will affect the increase in air temperatures as well as the occurrence of extreme weather events. Therefore, the study focuses on the calculation of the overheating potential of six European locations, namely Athens, Milano, Ljubljana, Berlin, Moscow and Helsinki. For these locations, the biocli...
Poster
Full-text available
In most parts of Europe, the projected climate change will affect the increase in air temperatures as well as the occurrence of extreme weather events. Therefore, the study focuses on the calculation of the overheating potential of six European locations, namely Athens, Milano, Ljubljana, Berlin, Moscow and Helsinki. For these locations, the biocli...
Poster
Full-text available
The focus of the presented research was to construct a simple, easy-to-mount, low-cost indirect green façade (IGF) in order to analyse its impact on solar irradiance incidence and external surface temperatures in case of a classic ETICS façade. The analysis was done in a Mediterranean climate on the island of Krk in Croatia in a period between June...
Conference Paper
Full-text available
The focus of the presented research was to construct a simple, easy-to-mount, low-cost indirect green façade (IGF) in order to analyse its impact on solar irradiance incidence and external surface temperatures in case of a classic ETICS façade. The analysis was done in a Mediterranean climate on the island of Krk in Croatia in a period between June...
Article
Full-text available
According to the Köppen-Geiger climate classification, Europe is under the influence of at least ten different climate types. Thus, various climates can be found, from the polar tundra (ET) and cold climate (e.g. Dfc) in the Alps and northern European regions, to hot-arid climate (e.g. BSh) in southern parts of Spain. This level of climate diversit...
Article
Full-text available
As the evidence for anthropogenic climate change is mounting, the need to evaluate its potential impacts in upcoming decades is becoming ever more important. As urbanised environments will be substantially affected, the evaluation of climate change impacts on building performance is crucial to ensure the sustainability and resilience of the built e...
Article
In recent decades, high level of urbanization, air pollution and climate change have caused a frequent occurrence of urban heat islands, resulting in thermal discomfort and increased energy use of buildings. As a response, a lot of attention has been paid to building envelope characteristics, with an increasing number of studies investigating build...
Conference Paper
Full-text available
Nowadays, engineering students tend to focus on computer simulations for the study of real-world phenomena, although in many cases they do not understand the basic principles behind the specific software. Therefore, in the time of computers, using a heliodon (physical device for solar analysis) for educational purposes might be an encouragement. Th...
Article
Full-text available
Vse pogosteje opažamo, da je v poletnih mesecih brez uporabe klimatskih naprav v novejših stavbah neprijetno vroče. Za to obstaja vrsta razlogov, pri čemer je eden izmed njih zagotovo nezadostna toplotna kapaciteta konstrukcijskih sklopov. Ena rešitev problema je uporaba fazno spremenljivih snovi, znanih tudi pod okrajšavo PCM (angleško Phase Chang...
Article
Full-text available
The number of children enrolled in daycare centres is increasing, while indoor environmental quality of Slovenian children daycare centres remains insufficiently investigated. The purpose of this paper, as Part I of the larger study "Indoor environmental quality (IEQ) in Slovenian children daycare centres", was to holistically assess indoor environ...
Article
Full-text available
In the process of building design it is important to consider the interconnected impact of occupants' behaviour and building characteristics on the quality of indoor environment. Moreover, it is necessary to identify how potential energy renovation measures may influence the indoor environmental quality. For this reason, this paper, as Part II of t...
Conference Paper
Full-text available
Thermal response of building envelope exerts a substantial influence on the formation of overall indoor comfort conditions as well as on the energy performance of buildings. For the majority of Central and Northern European countries it can be said that legislators as well as designers focus primarily on the optimization of building performance in...
Conference Paper
Full-text available
doi:10.18086/swc.2017.21.04 As bioclimatic design is becoming increasingly important in contemporary buildings, various analytical tools must be developed and introduced to the designers in order to guide them through the design process. Therefore, the BcChart v2.0 software was developed. It executes bioclimatic potential analysis of a location bas...
Poster
Full-text available
As bioclimatic design is becoming increasingly important in contemporary buildings, various analytical tools must be developed and introduced to the designers in order to guide them through the design process. Therefore, the BcChart v2.0 software was developed. It executes bioclimatic potential analysis of a location based on the theory of Olgyay’s...
Article
Full-text available
As the environmental awareness of the public is rising and at the same time contemporary buildings are becoming more and more energy efficient, the focus is shifting towards the usage of environmentally friendly building products. Human decisions are often driven by emotions and perceptions. Consequently, there exists a strong tendency towards pref...
Article
In recent years the use of wood based products in building industry has expanded. Although lightweight timber constructions essentially decrease environmental impact of a building, their consequential low thermal mass can lead to overheating during summer. Therefore, the purpose of this paper was to investigate various examples of enhanced lightwei...
Conference Paper
Full-text available
In recent decades the construction industry in the EU has been focused on the improvement of energy performance of buildings. The principal focus is on the reduction of transmission and ventilation losses of a building, where transmission losses are predominantly reduced by thermally insulating the building envelope. Therefore, the U value of a bui...
Article
Quality of indoor environment as well as energy consumption in buildings are a growing concern in the context of overheating of buildings, as the EU legislation is primarily focused on heating season. The statistical data of EU have shown that there is already a large amount of buildings not comfortably cool during summer and the trend is increasin...
Article
Full-text available
Problem: Most children in early childhood spend approximately one third of the day in kindergartens. Therefore, it is essential that their stay in an educational institution is comfortable and without adverse health effects. Statistical data over the last decade show that the amount of enrolled children in kindergartens has increased. The problem o...
Article
Full-text available
Fungal (mould) growth is a common problem in damp or water- damaged buildings. Building moisture and humidity problems appear due to poor construction (thermal bridges, water leakages) and floods. Users habits and poorly ventilated living and working environments are also important reasons of the increased humidity of indoor air. The purpose of thi...

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Projects

Project (1)
Project
Bioclimatic chart plots, using only elementary weather data, i.e., dry-bulb temperature and relative humidity, will be used to predict potential passive building strategies. The influence of actually received solar irradiance will be precisely considered as it will have a large influence on the results of the analysis. This will result in bioclimatic chart modifications. Additionally, evaluation of performed bioclimatic potential prognosis will be checked with simulations of a generic building model using Energy Plus.