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1
Content available Validation of the Fanger Model and Assessment of SBS Symptoms in the Lecture Room
Krawczyk Natalia, Dębska Luiza, Piotrowski Jerzy Z., Honus Stanislav, Majewski Grzegorz
Rocznik Ochrona Środowiska
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2023
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Tom 25
68--76
EN
The indoor environment of buildings significantly affects the well-being and health of room users. Experiencing thermal discomfort reduces concentration and productivity during study or work, causing drowsiness, fatigue or deterioration in general well-being. The study focuses on presenting the results of the questionnaire study on the symptoms of sick building syndromes (SBS), namely: dizziness, nausea, eye pain and nasal mucosa, experienced by 69 students during a lecture in a large and modern auditorium of Kielce University of Technology. The results show that many students experienced SBS symptoms, which seem to have affected their concentration during the class. The article also discusses the thermal sensations of the students with a focus on comparing the obtained results with the Fanger model of thermal comfort. The discrepancy between the model calculation results and the experimental data has been observed and discussed.
2
Content available Thermal Comfort Analysis in the Smart Sustainable Building with Correlation Development
Dębska Luiza, Honus Stanislav, Krawczyk Natalia, Orman Łukasz J., Piotrowski Jerzy Z.
Rocznik Ochrona Środowiska
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2023
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Tom 25
116--127
EN
The paper presents the results of the experimental study of thermal comfort in the smart building of Kielce University of Technology (Poland). The experiments were conducted throughout four seasons of the year and focused on developing a modified thermal comfort correlation that could determine the thermal sensations of room users more accurately than the standard methodology. Twelve groups of volunteers participated in the study, and thermal sensations were analysed for both genders separately. Even though the thermal environment was not considered overwhelmingly favourable (with 75% of men and 60% of women providing positive assessment), thermal acceptability was high. It amounted to 90% (the same for both genders). The air temperature of 22°C proved to be most preferable. The BMI index and CO2 concentration were found to influence thermal sensations and were incorporated into a modified correlation, which provided more accurate results than the original Fanger model of thermal comfort.
3
Content available Thermal comfort assessment in the modern passenger car under actual operational conditions
Dębska Luiza, Krawczyk Natalia
Production Engineering Archives
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2023
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Vol. 29, Iss. 2
140--146
EN
People’s ever-increasing needs encourage designers of various vehicles to search for solutions that will provide the most comfortable internal environment conditions. Currently, partly due to the COVID-19 threat, many people use their individual cars to travel to work, college, shops, trips, and holidays. Proper internal air parameters that need to be maintained in vehicles are critical in the sum-mer. The article discusses the thermal comfort of four passengers of a modern car produced in 2017to verify if contemporary production technology can successfully meet the thermal needs of people under actual conditions in the Polish climate. For this purpose, five temperature values were tested:20oC, 22oC, 24oC, 26oC, and 28oC for the car located in the shade and sun. In addition, the Testo 400meter was used to control and measure the internal parameters, and questionnaires were used to find out about the thermal impressions of the respondents. The research was carried out in July when the air temperature in Poland was high
4
Content available remote Thermal comfort testing in the smart sustainable building
Krawczyk Natalia, Dębska Luiza, Honus Stanislav, Zegarek Marta, Kiniorski Mateusz, Orman Łukasz J.
Journal of New Technologies in Environmental Science
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2023
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Vol. 7, nr 2
37--45
EN
Today, more and more buildings are being built based on the idea of sustainable development. This mainly concerns the creation of such microclimate conditions in the rooms that a person feels comfortable inside. Therefore, the article presents tests of thermal comfort for three teaching rooms in an intelligent building. The research was carried out using two methods, a microclimate meter measurements and questionnaires. The survey provided research results on thermal sensation vote, thermal preference vote and humidity assessment. Moreover, the results of Predicted Percentage of Dissatisfied and Predicted Mean Vote were presented in the paper. Students between the age of 21 and 25 and one female in her 30s participated in the survey. Through the results of the questionnaires and the microclimate meter, significant differences were shown between the Fanger model and the questionnaires in terms of PMV and PPD.
5
Content available remote Validation of the fanger model and assessment of SBS symptoms in the lecture room
Krawczyk Natalia, Dębska Luiza, Dąbek Lidia, Majewski Grzegorz, Orman Łukasz
Journal of New Technologies in Environmental Science
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2022
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Vol. 6, nr 4
128--129
EN
Currently, the conditions of the internal environment should be close to comfortable, so that every person who stays in the room does not feel heat discomfort or other ailments resulting from it. Taking this into account, this study focused on the symptoms of SBS (dizziness, nausea, eye pain and runny nose) experienced by 69 people in a modern lecture hall of the Kielce University of Technology. It turned out that the analysed ailments were felt by the study group (which in turn could have caused a decrease in concentration during classes). In addition, the article compares the actual thermal sensations of people to the values obtained from the Fanger model.
6
Content available remote Thermal comfort analysis in the smart sustainable building
Krawczyk Natalia, Dębska Luiza, Orman Łukasz
Journal of New Technologies in Environmental Science
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2022
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Vol. 6, nr 4
134--135
EN
Modern times are a challenge for many building designers. Creating the internal environment, in particular in sustainable construction, puts the feeling of thermal comfort in the most important place. Therefore, 3 lecture halls in a smart building called Energis belonging to the Kielce University of Technology were examined. In addition to research related to thermal sensations and preferences, PMV (Predicted Mean Vote) and PPD (Predicted Percentage of Dissatisfied) indices were also calculated on a group of students aged 21 to 25.
7
Content available Questionnaire survey of thermal sensations in the large lecture room
Majewski Grzegorz, Telejko Marek, Krawczyk Natalia, Dębska Luiza, Orman Łukasz J.
Structure and Environment
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2021
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Vol. 13, no. 4
113--117
EN
The article focuses on the subjective assessment of human thermal sensations expressed by them in the questionnaires. The tests were performed in the lecture room of Kielce University of Technology, where 69 students answered the questions about their thermal sensations. The results show that the majority of students felt satisfied and were not interested in changing the conditions. The impact of Body Mass Index revealed itself and was quite obvious.
PL
Artykuł koncentruje się na zagadnieniu subiektywnej oceny wrażeń cieplnych ludzi wyrażonych przez nich w kwestionariuszach. Badania prowadzono w dużej sali wykładowej Politechniki Świętokrzyskiej, gdzie 69 studentów odpowiadało na pytania dotyczące ich odczuć termicznych. Wyniki pomiarów pokazują, że większość studentów była usatysfakcjonowana i nie chcieli zmieniać warunków swojego otoczenia. W pracy wyraźnie uwidocznił się również wpływ indeksu BMI respondentów.
8
Content available Modern Methods of Thermal Comfort Measurements
Dębska Luiza, Krakowiak Justyna, Kapjor Andrej
Structure and Environment
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2020
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Vol. 12, no. 4
161--165
EN
The issue of thermal comfort and its subjective feelings inside a building is becoming more and more important in the modern world. It is caused by the desire to create optimal conditions in places where people stay. The article presents two methods, indirect and direct, which are typically used in the research projects. These methods enable to assess the thermal sensations of people and compare the feelings of the respondents with the value of PMV (the value of human thermal sensations) calculated using the formula from the ISO 7730 standard and the questionnaire surveys.
PL
Zagadnienie komfortu cieplnego oraz jego subiektywnych odczuć wewnątrz budynku staje się coraz ważniejsze we współczesnym świecie. Spowodowane jest to chęcią stworzenia optymalnych warunków w miejscach przebywania ludzi. W artykule przedstawiono dwie metody, pośrednią oraz bezpośrednią, które powszechnie stosuje się w badaniach. Metody te umożliwiają ocenę wrażeń cieplnych ludzi i porównanie odczuć osób ankietowanych z wartością PMV (wartością wrażeń cieplnych człowieka) obliczoną za pomocą wzoru z normy ISO 7730 z danymi z kwestionariuszy.
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