TY  - CONF
AU  - Stevanović, Žana
AU  - Bajc, Tamara
AU  - Tomić, Mladen
AU  - Kostadinović, Danka
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4525
AB  - As we progress toward net zero energy - efficient solutions, it becomes increasingly important to
have more quality CFD models on thermal comfort and indoor environmental quality. Based on
experimental data collected, there was an analysis of statistical data and variation of mathematical
CFD models. The proposed models are built into a numerical code of the commercial software
PHOENICS. While investigating, special attention was paid to the influence of production and
dissipation terms of turbulent kinetic energy due to the fluctuation of body forces. Parametric
analysis was conducted on the the basic model, which is characterized by the fact that the
turbulent model and heat transfer by radiation model is built-in. A statistical analysis of a complex
array has been conducted, so additional statistical indicators have given the right information
about the model quality. Based on the results of the numericals models, it was shown that the
variation of transparence in a model of radiation and coefficient of dissipation in turbulence
model have a dominant role on local parameters in PMV indicators of thermal comforts models.
PB  - Zagreb : Faculty of Mechanical Engineering and Naval Architecture
C3  - Proceedings of 3rd SEE SDEWES Conference Novi Sad 2018
T1  - Influence of upgrading glass wall inside of building on thermal comfort
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4525
ER  - 

@conference{
author = "Stevanović, Žana and Bajc, Tamara and Tomić, Mladen and Kostadinović, Danka",
year = "2018",
abstract = "As we progress toward net zero energy - efficient solutions, it becomes increasingly important to
have more quality CFD models on thermal comfort and indoor environmental quality. Based on
experimental data collected, there was an analysis of statistical data and variation of mathematical
CFD models. The proposed models are built into a numerical code of the commercial software
PHOENICS. While investigating, special attention was paid to the influence of production and
dissipation terms of turbulent kinetic energy due to the fluctuation of body forces. Parametric
analysis was conducted on the the basic model, which is characterized by the fact that the
turbulent model and heat transfer by radiation model is built-in. A statistical analysis of a complex
array has been conducted, so additional statistical indicators have given the right information
about the model quality. Based on the results of the numericals models, it was shown that the
variation of transparence in a model of radiation and coefficient of dissipation in turbulence
model have a dominant role on local parameters in PMV indicators of thermal comforts models.",
publisher = "Zagreb : Faculty of Mechanical Engineering and Naval Architecture",
journal = "Proceedings of 3rd SEE SDEWES Conference Novi Sad 2018",
title = "Influence of upgrading glass wall inside of building on thermal comfort",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4525"
}

Stevanović, Ž., Bajc, T., Tomić, M.,& Kostadinović, D.. (2018). Influence of upgrading glass wall inside of building on thermal comfort. in Proceedings of 3rd SEE SDEWES Conference Novi Sad 2018
Zagreb : Faculty of Mechanical Engineering and Naval Architecture..
https://hdl.handle.net/21.15107/rcub_machinery_4525

Stevanović Ž, Bajc T, Tomić M, Kostadinović D. Influence of upgrading glass wall inside of building on thermal comfort. in Proceedings of 3rd SEE SDEWES Conference Novi Sad 2018. 2018;.
https://hdl.handle.net/21.15107/rcub_machinery_4525 .

Stevanović, Žana, Bajc, Tamara, Tomić, Mladen, Kostadinović, Danka, "Influence of upgrading glass wall inside of building on thermal comfort" in Proceedings of 3rd SEE SDEWES Conference Novi Sad 2018 (2018),
https://hdl.handle.net/21.15107/rcub_machinery_4525 .

TY  - CONF
AU  - Bajc, Tamara
AU  - Todorović, Maja
AU  - Banjac, Miloš
AU  - Stevanović, Žana
AU  - Kostadinović, Danka
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4569
AB  - According to the various researches, the people spend the most of their time indoors which is directly connected to the necessity of adequate indoor air quality. The question of the indoor air quality is of a special importance in educational buildings having in mind the large number of occupants, their health and impact on learning capabilities. The paper deals with the analysis of the indoor air quality in university classroom, using the results of measurements of CO2 concentration and statistical survey among the occupants’ which was performed during the winter semester. The measurements were performed during four weeks, together with the occupants’ survey. Measuring parameters were indoor air temperature, relative humidity and CO2 concentration. The results showed that the higher concentrations of CO2 measured in classroom caused the symptoms such as stuffiness, sleepiness, reduced concentration, headache
and hard breathing. During the fourth week of measurements, when the average CO2 concentration was about 2050 ppm in classroom, about 65% of students’ voted that the indoor air quality in classroom was poor or very poor and felt some of the symptoms such as stuffiness, sleepiness, reduced concentration and hard breathing, while 15% stated that they had all these symptoms. The analysis of occupants’ evaluation regarding the poor indoor air quality impact on their concentration ability showed that subjective feelings of reduced concentration ability were the lowest when the measured CO2 concentration in classroom was also the lowest.
PB  - Politehnica University Timisoara
PB  - Asociatia Inginerilor de Instalatii din Romania
C3  - Proceedings of Instaltii pentu constructii si confortul ambiental
T1  - Indoor Air Quality in Educational Buildings - Serbian Case
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4569
ER  - 

@conference{
author = "Bajc, Tamara and Todorović, Maja and Banjac, Miloš and Stevanović, Žana and Kostadinović, Danka",
year = "2018",
abstract = "According to the various researches, the people spend the most of their time indoors which is directly connected to the necessity of adequate indoor air quality. The question of the indoor air quality is of a special importance in educational buildings having in mind the large number of occupants, their health and impact on learning capabilities. The paper deals with the analysis of the indoor air quality in university classroom, using the results of measurements of CO2 concentration and statistical survey among the occupants’ which was performed during the winter semester. The measurements were performed during four weeks, together with the occupants’ survey. Measuring parameters were indoor air temperature, relative humidity and CO2 concentration. The results showed that the higher concentrations of CO2 measured in classroom caused the symptoms such as stuffiness, sleepiness, reduced concentration, headache
and hard breathing. During the fourth week of measurements, when the average CO2 concentration was about 2050 ppm in classroom, about 65% of students’ voted that the indoor air quality in classroom was poor or very poor and felt some of the symptoms such as stuffiness, sleepiness, reduced concentration and hard breathing, while 15% stated that they had all these symptoms. The analysis of occupants’ evaluation regarding the poor indoor air quality impact on their concentration ability showed that subjective feelings of reduced concentration ability were the lowest when the measured CO2 concentration in classroom was also the lowest.",
publisher = "Politehnica University Timisoara, Asociatia Inginerilor de Instalatii din Romania",
journal = "Proceedings of Instaltii pentu constructii si confortul ambiental",
title = "Indoor Air Quality in Educational Buildings - Serbian Case",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4569"
}

Bajc, T., Todorović, M., Banjac, M., Stevanović, Ž.,& Kostadinović, D.. (2018). Indoor Air Quality in Educational Buildings - Serbian Case. in Proceedings of Instaltii pentu constructii si confortul ambiental
Politehnica University Timisoara..
https://hdl.handle.net/21.15107/rcub_machinery_4569

Bajc T, Todorović M, Banjac M, Stevanović Ž, Kostadinović D. Indoor Air Quality in Educational Buildings - Serbian Case. in Proceedings of Instaltii pentu constructii si confortul ambiental. 2018;.
https://hdl.handle.net/21.15107/rcub_machinery_4569 .

Bajc, Tamara, Todorović, Maja, Banjac, Miloš, Stevanović, Žana, Kostadinović, Danka, "Indoor Air Quality in Educational Buildings - Serbian Case" in Proceedings of Instaltii pentu constructii si confortul ambiental (2018),
https://hdl.handle.net/21.15107/rcub_machinery_4569 .

TY  - CONF
AU  - Bajc, Tamara
AU  - Todorović, Maja
AU  - Stevanović, Žarko
AU  - Stevanović, Žana
AU  - Banjac, Miloš
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4572
AB  - The paper deals with a comprehensive CFD analysis of local
thermal comfort indices in occupied classroom during the
winter semester and the impact on students’ productivity loss.
The investigation is done using CFD software, using a
measured data as an input for initial conditions. The
measurements were done in representative classroom at Faculty
of Mechanical engineering, University of Belgrade, Serbia
during the four weeks in November and December 2015. The
research consisted from a four scenarios, each with the different
thermal conditions. The students were predominantly male
population, age between 21 and 30. It is shown that the local
thermal comfort indicators can be pretty much different than an
average value, which implies with the bigger productivity losses
locally. The results also showed that the students seated in a
warmer zone of a classroom had a bigger productivity loss than
the ones in the colder zones. The local air temperature values
varied up to 2°C in comparison with an average value, which
can significantly impact on local thermal comfort. The problem
of productivity loss is very complex having in mind the nature of
the human metabolism, clothing, habits, and total physical
conditions and it always should be observed as an integrated
part of a larger analysis including all these parameters.
PB  - Society of Thermal Engineers of Serbia
C3  - Proceedings of the 1st International Conference on Buildings, Energy, Systems and Technology - BEST2016
T1  - LOCAL THERMAL COMFORT INDICES IMPACT ON PRODUCTIVITY LOSS IN CLASSROOMS
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4572
ER  - 

@conference{
author = "Bajc, Tamara and Todorović, Maja and Stevanović, Žarko and Stevanović, Žana and Banjac, Miloš",
year = "2016",
abstract = "The paper deals with a comprehensive CFD analysis of local
thermal comfort indices in occupied classroom during the
winter semester and the impact on students’ productivity loss.
The investigation is done using CFD software, using a
measured data as an input for initial conditions. The
measurements were done in representative classroom at Faculty
of Mechanical engineering, University of Belgrade, Serbia
during the four weeks in November and December 2015. The
research consisted from a four scenarios, each with the different
thermal conditions. The students were predominantly male
population, age between 21 and 30. It is shown that the local
thermal comfort indicators can be pretty much different than an
average value, which implies with the bigger productivity losses
locally. The results also showed that the students seated in a
warmer zone of a classroom had a bigger productivity loss than
the ones in the colder zones. The local air temperature values
varied up to 2°C in comparison with an average value, which
can significantly impact on local thermal comfort. The problem
of productivity loss is very complex having in mind the nature of
the human metabolism, clothing, habits, and total physical
conditions and it always should be observed as an integrated
part of a larger analysis including all these parameters.",
publisher = "Society of Thermal Engineers of Serbia",
journal = "Proceedings of the 1st International Conference on Buildings, Energy, Systems and Technology - BEST2016",
title = "LOCAL THERMAL COMFORT INDICES IMPACT ON PRODUCTIVITY LOSS IN CLASSROOMS",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4572"
}

Bajc, T., Todorović, M., Stevanović, Ž., Stevanović, Ž.,& Banjac, M.. (2016). LOCAL THERMAL COMFORT INDICES IMPACT ON PRODUCTIVITY LOSS IN CLASSROOMS. in Proceedings of the 1st International Conference on Buildings, Energy, Systems and Technology - BEST2016
Society of Thermal Engineers of Serbia..
https://hdl.handle.net/21.15107/rcub_machinery_4572

Bajc T, Todorović M, Stevanović Ž, Stevanović Ž, Banjac M. LOCAL THERMAL COMFORT INDICES IMPACT ON PRODUCTIVITY LOSS IN CLASSROOMS. in Proceedings of the 1st International Conference on Buildings, Energy, Systems and Technology - BEST2016. 2016;.
https://hdl.handle.net/21.15107/rcub_machinery_4572 .

Bajc, Tamara, Todorović, Maja, Stevanović, Žarko, Stevanović, Žana, Banjac, Miloš, "LOCAL THERMAL COMFORT INDICES IMPACT ON PRODUCTIVITY LOSS IN CLASSROOMS" in Proceedings of the 1st International Conference on Buildings, Energy, Systems and Technology - BEST2016 (2016),
https://hdl.handle.net/21.15107/rcub_machinery_4572 .