Assessment of Thermal Comfort in the Intelligent Buildings in View of Providing High Quality Indoor Environment

Majewski, Grzegorz; Orman, Łukasz J.; Telejko, Marek; Radek, Norbert; Pietraszek, Jacek; Dudek, A.

doi:10.3390/en13081973

Cited by 44 publications

(36 citation statements)

References 35 publications

(42 reference statements)

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“…The results showed that the respondents preferred higher temperature ranges, especially women accept a warmer environment. Majewski et al [7] conducted research in an intelligent building and noticed differences between the actual and forecast values of thermal comfort. Broday et al [8] analysed thermal comfort by comparing Fanger's model with people's real thermal sensations.…”

Section: Introductionmentioning

confidence: 99%

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Thermal comfort in the low energy building - validation and modification of the Fanger model

Krawczyk

2021

E3S Web Conf.

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Nowadays, we spend most of our time inside buildings. Thus, ensuring adequate thermal comfort is an important issue. The paper discusses the issue of thermal comfort assessment in the intelligent low energy building “Energis” of Kielce University of Technology (Poland). The tests conducted in a selected lecture theater focused on collecting anonymous questionnaires containing thermal sensation and air quality votes of the respondents as well as performing measurements of indoor air parameters (air and globe temperatures, relative humidity, air velocity and CO2 concentration). Based on the obtained data a comparison has been done between the actual sensation votes of the volunteers and the calculation results performed with the Fanger thermal comfort model. Two indices have been considered in the paper: PMV (Predicted Mean Vote) and PPD (Predicted Percentage Dissatisfied). A modification of the model has also been proposed, which considers the impact of the carbon dioxide concentration on thermal comfort.

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Section: Introductionmentioning

confidence: 99%

“…The latest research is improving the models. In Poland, studies on thermal comfort and indoor air quality were conducted, among others, by Dudkiewicz et al [18], Majewski et al [7], Piotrowski et al [19].…”

Section: Introductionmentioning

confidence: 99%

Thermal comfort in the low energy building - validation and modification of the Fanger model

Krawczyk

2021

E3S Web Conf.

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“…al. [7] analyzed the indoor environment in two selected intelligent buildings in Poland. The research lasted 1,5 years and covered 117 rooms.…”

Section: Introductionmentioning

confidence: 99%

“…The temperature has not always been constant and in some studies the humidity dropped below 25%. From the questionnaires themselves, it was found that only 66.3% of women and 76.4% of men were satisfied with the prevailing conditions throughout the entire study [7]. In a school in Slovakia, research was carried out for 5 classes by Vilcekova et.…”

Section: Introductionmentioning

confidence: 99%

Thermal environment assessment in selected Polish educational buildings

Dębska

Krakowiak

2021

E3S Web Conf.

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The paper presents experimental results of a study on indoor thermal environment in selected educational buildings located in the city of Kielce (Poland). The volunteers in the investigated rooms were asked to fill in the anonymous questionnaires containing questions on their thermal sensation, thermal preference and thermal acceptability votes as well as humidity assessment and humidity preference votes. In total, 83 people completed the questionnaires. Simultaneously, the indoor air parameters were measured with a microlimate meter equipped with precision sensors to measure air and globe temperatures, air velocity and relative humidity. The analysis of the obtained results provides information on the subjective assessment of the thermal environment in the considered rooms. It allowed to assess whether the guidelines given in the standard are consistent with the real feeling of comfort of the respondents. Research in the performed scope has shown that the feelings of the respondents and the standard guidelines diverge. It was noticed that that the subjects definitely felt better in the rooms where the temperature was around 22.5°C. The subjects felt worse at the temperature of 25.3°C and the worst of 27.6°C.

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“…To achieve this goal, it is required to conduct experimental research and reduce the testing costs by computer simulations (Pietraszek et al, 2014;Ulewicz et al, 2013a). In order to reduce the costs of testing, they are usually conducted on a laboratory scale (Majewski et al, 2020;Pietraszek et al, 2015). For this reason, tests performed in industrial conditions are extremely important.…”

Section: Introductionmentioning

confidence: 99%

Influence of inclusions on bending fatigue strength coefficient the medium carbon steel melted in an electric furnace

Lipiński

Wach

2020

Production Engineering Archives

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The parameters of high-grade steel are influenced by a combination of factors, including chemical composition and production technology. The impurity content is also a key determinant of the quality of high-grade steel. Inclusions may also play an important role, subject to their type and shape. Inclusions may increase the strength of steel by inhibiting the development of micro-cracks. The analyzed material was one grade of medium-carbon structural steel. The study was performed on 6 heats produced in an industrial plant in 140 ton electric furnaces. The experimental variants were compared in view of the five heat treatment options. The results were presented to account for the correlations between the fatigue strength coefficient during rotary bending, the diameter of and spacing between impurities. The relationship between the fatigue strength and hardness of high-grade steel vs. the quotient of the diameter of impurities and the spacing between impurities was determined. The proposed equations contribute to the existing knowledge base of practices impact of impurities with various diameters and spacing between non-metallic inclusion on fatigue strength.

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Assessment of Thermal Comfort in the Intelligent Buildings in View of Providing High Quality Indoor Environment

Cited by 44 publications

References 35 publications

Thermal comfort in the low energy building - validation and modification of the Fanger model

Thermal comfort in the low energy building - validation and modification of the Fanger model

Thermal environment assessment in selected Polish educational buildings

Influence of inclusions on bending fatigue strength coefficient the medium carbon steel melted in an electric furnace

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