Wyniki wyszukiwania - BazTech

1

Experimental study on thermal comfort at university buildings in Slovakia

Orman Łukasz J., Kapjor Andrej

Structure and Environment

|

2023

|

Vol. 15, no. 1

1--5

EN

The paper discusses the issue of thermal comfort expressed by the students of the University of Žilina in anonymous questionnaires. The volunteers rated their thermal sensations, preferences as well as lighting conditions in the autumn season. The students were in favour of the prevailing thermal conditions - almost 88% of the volunteers expressed positive opinions about their environment. The comparison of the test results for a computer laboratory with the Fanger model calculation results was also made and indicated differences between the experimental data and values determined with the model.

PL

W artykule omówiono zagadnienie komfortu cieplnego studentów Uniwersytetu w Żylinie w oparciu o anonimowe ankiety. Ochotnicy oceniali swoje odczucia termiczne, preferencje oraz warunki oświetleniowe w okresie jesiennym. Studenci wyrazili się pozytywnie w zakresie panujących warunków termicznych - blisko 88% odpowiedzi. W pracy dokonano również porównania wyników badań w laboratorium komputerowym z wynikami obliczeń wg modelu Fangera i wykazano różnice między danymi eksperymentalnymi a wartościami wyznaczonymi modelem.

2

Questionnaire survey of thermal sensations in the large lecture room

Majewski Grzegorz, Telejko Marek, Krawczyk Natalia, Dębska Luiza, Orman Łukasz J.

Structure and Environment

|

2021

|

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.

3

Preliminary test results of thermal comfort in a classroom

Krawczyk Natalia, Piasta Zdzisław

Structure and Environment

|

2019

|

Vol. 11, no. 4

281--286

EN

The paper presents the issue of thermal comfort based on the conducted study. First, the definition and importance of thermal comfort was discussed. Then, air parameters were measured and surveys were conducted regarding questions about the assessment of thermal comfort of persons using the room. The list of the subject thermal comfort evaluation tests are illustrated in the diagrams. The impact of gender and BMI on the Predicted Mean Vote PMV were also analyzed. In the next part, results obtained from surveys and according to formulas from the standard were developed, and then compared.

PL

W pracy przedstawiono zagadnienie komfortu cieplnego w oparciu o przeprowadzone badanie. Najpierw omówiono definicję i znaczenie komfortu cieplnego. Następnie wykonano pomiary parametrów powietrza oraz przeprowadzono ankiety dotyczące pytań o ocenę komfortu cieplnego osób użytkujących pomieszczenie. Zestawienia badań oceny komfortu cieplnego zilustrowano na wykresach. Analizie poddano także wpływ płci i wskaźnika BMI na przewidywaną średnią ocenę PMV. W kolejnej części opracowano wyniki otrzymane z ankiet oraz według wzorów z normy, a następnie je porównano.

4

Long-term changes of weather stimuli based on the example of the southern part of Warsaw - Ursynów

Rozbicka Katarzyna, Zawistowska Martyna

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

|

2019

|

Vol. 28, No. 1

25--34

EN

The aim of the work is to evaluate thermal sensations based on the average daily temperature of air and to determine thermal stimuli, using interdependent variability of air temperature (average, maximum and minimum). The data from the weather station Ursynów – SGGW was used for the analysis in the period 1961–2016. The analysis showed that with the highest frequency (74%) there are thermal sensations “saving” (“slightly cold”, “cool”, “warm”). In the case of thermal stimuli with the greatest frequency, changes from day to day were described as “neutral”, not exceeding 2°C . Based on the analysis of the long-term period trend of the number of days in the year, it can be stated an increase in the number of days with the thermal stress “very warm”, which is results from a positive statistically significant trend and also a decrease in number of days with thermal stimuli “sharp”.

5

Assessment of Variation in Thermal Sensations Determined Based on Effective Temperature

Rymuza Katarzyna, Radzka Elżbieta, Świerzycka Gracja

Journal of Ecological Engineering

|

2019

|

Vol. 20, nr 2

218--225

EN

Air temperature is one of major factors in a subjective assessment of human thermal comfort and discomfort. The work draws on a series of measurements of the average daily air temperatures, relative air humidity and wind speed for 2000-2016 recorded at the Siedlce Meteorological Station. The station is part of the state observation and measurement network of the hydrological and meteorological service of The Institute of Meteorology and Water Management – National Research Institute (IMGW-PIB). The effective temperature was calculated according to the formula recommended by Missenard and the thermal sensation was determined based on a scale suggested by Baranowska. The number of days with individual thermal sensations in individual months of the long-term period was calculated, and months were put into groups of similar sensations by means of principal component analysis (PCA) and cluster analysis. In the last years (2015, 2014, 2012 and 2011) in the months representing the cold season of the year, there were more days which were very cold and cold, whereas the number of days with the thermal comfort was much lower. The long-term period was split into three groups, based on the thermal comfort in the warm season of the year. The years which formed one group included 2011, 2013, 2015 and 2016 when there were no very cold days, the least cold days and the most very hot days.

6

Odczucia cieplne chirurgów i personelu medycznego podczas prowadzenia operacji – wstępne wyniki badań ankietowych

Bogdan A., Chludzińska M., Uścinowicz P.

Ciepłownictwo, Ogrzewnictwo, Wentylacja

|

2014

|

T. 45, nr 11

440--442

PL

W artykule przedstawiono wyniki badań ankietowych dotyczących odczuć cieplnych chirurgów i personelu medycznego w celu stwierdzenia, jak warunki środowiska cieplnego panujące w salach operacyjnych w istniejących szpitalach, są odbierane przez użytkowników.

EN

The paper presents the results of surveys concerning thermal sensation of surgeons and medical staff to determine how the thermal environmental conditions, prevailing in the operating rooms in existing hospitals, are received by the users.

7

Odczuwalność cieplna w okresie zimowym w rejonie Polskiej Stacji Polarnej w Hornsundzie w latach 1991-2000

Owczarek M.

Problemy Klimatologii Polarnej

|

2004

|

nr 14

171-182

EN

Evaluation of thermal conditions on polar station is the subject of this paper. Calculations based on the Polish Polar Station in Hornsund data at 06, 12 and 18 GMT in the period 1991-2000. Three bio-meteorological indices were analyzed: Wind Chill Index (WCI) according to Siple-Passel formula (1945), Wind Chill Temperature Index (WCTI) based on new American and Canadian formula (2002) and Insulation Predicted (Iclp) according to Burton-Edholm formula (1955). Hypothermic conditions were noticed most often (60-90%) during considered period. Comfortable thermal conditions took below 10% causes per month only. The risk of frostbite of exposed skin could be noticed from November to April from 1% to over 18% causes per moth. The most severe conditions were occurred in February. There is a necessary to use clothes of over 4 clo thermal insulation and wind-protectors for most of considered period. There is also the need for keeping active, covering exposed skin and being ready to short outdoor activities.