The paper analyses thermal comfort of people wearing face masks. study took place in the selected classrooms smart building “Energis” located Poland. In experiments 100 respondents participated. They filled questionnaire forms, which they expressed their subjective assessment indoor environment. Simultaneously, measurements physical parameters within rooms were performed with a microclimate meter. results clearly show that use masks influenced sensations - felt warmer than without mask on...

Renewable energy sources play a substantial role in producing electricity and heat single-family homes while becoming independent from external suppliers. This is primarily due to economic advantages, i.e., reducing costs. article aims compare two powered by photovoltaic systems and, additionally, pump. Both buildings were located near each other the same climate conditions (Swietokrzyskie Province, Poland). The analysis compared production for different module models with maximum power of...

Abstract The proper design of smart buildings, usually powered with renewable energy sources, should ensure that the indoor conditions are comfortable and users experience thermal comfort throughout year. existing model comes from 60’s/70’s was basis for ISO 7730 Standard. It utilizes concept PMV (Predicted Mean Vote) PPD Percentage Dissatisfied) indicators. current paper compares actual expressions people (as indicated by them in anonymous questionnaires) PMV/PPD values calculated according...

This paper experimentally analyses an indoor environment assessment of a large group respondents regarding their subjective perception overall comfort, air quality and humidity. The questionnaire survey was applied as testing method together with measurements the physical parameters conducted microclimate meter. Two types were analysed: educational rooms climate chamber. comparative analysis sensations experienced within them indicates that they generate quite similar responses; however,...

Abstract Currently, thermal comfort and indoor air quality are essential elements in designing modern intelligent buildings or improving existing ones, so that they would provide proper conditions. The article focuses on the sensations of students Kielce University Technology determining whether given parameters internal environment contributed to their well-being. 164 people aged 16 - 24 participated study, which was conducted with use a microclimate meter questionnaires. It turned out...

The indoor environment of buildings significantly affects the well-being and health room users. Experiencing thermal discomfort reduces concentration productivity during study or work, causing drowsiness, fatigue deterioration in general well-being. focuses on presenting results questionnaire symptoms sick building syndromes (SBS), namely: dizziness, nausea, eye pain nasal mucosa, experienced by 69 students a lecture large modern auditorium Kielce University Technology. show that many SBS...

People tend to spend considerable amounts of time in buildings; thus the issue providing proper indoor environmental quality is significant importance. This paper experimentally analyses subjective sensations occupants intelligent and traditional buildings with focus on possible differences between these two types buildings. The study based a large database 1302 questionnaires collected 92 rooms where simultaneous measurements environment physical parameters (air globe temperature, relative...

Abstract The main aim of the research is to assess light intensity and its impact on productivity participants in educational buildings. was carried out 18 rooms teaching buildings Poland involved over two hundred volunteers. tests were with following climate parameters: air temperature ranged from 20 25.1 °C, relative humidity 18.16 50.9 %, concentration carbon dioxide 509 1634 ppm. tested 17.3 1095.1 lux. parameters room temperature, concentration, recorded using a microclimate meter....

Perception of temperature and relative humidity has an important influence on feelings thermal comfort or discomfort.The aim this study is to analyse the sensations 222 people aged 19-30 years, taking into account air in four educational buildings at Kielce University Technology.Two methods were used conduct study, indirect (use environmental meter) direct questionnaires).Air ranged from 20 o C-27.5 C 18.16%-50.9%.Approximately 60% students rated as pleasant, nevertheless 32% would prefer it...

The paper presents experimental results of a study on indoor thermal environment in selected educational buildings located the city Kielce (Poland). volunteers investigated rooms were asked to fill anonymous questionnaires containing questions their sensation, preference and acceptability votes as well humidity assessment votes. In total, 83 people completed questionnaires. Simultaneously, air parameters measured with microlimate meter equipped precision sensors measure globe temperatures,...

The paper deals with the important element of proper lighting conditions at a workplace. case study has been focused on intelligent building “Energis” Kielce University Technology, where experimental tests took place. Several groups volunteers filled in questionnaires related to their subjective feelings lecture rooms different seasons. Simultaneously, precise measurements intensity were carried out. comparison expressions room users and enabled draw conclusions about provided lighting....

Abstract 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 COVID-19 threat, many people use their individual cars travel work, college, shops, trips, and holidays. Proper air parameters need be maintained in are critical summer. The article discusses thermal comfort four passengers a modern car produced 2017 verify if contemporary production technology...

The paper focuses on important elements i.e. appropriate lighting conditions at workstations and the assessment of subjective productivity as a function indoor environmental parameters, using example students in intelligent building “Energis” Kielce University Technology, where an experimental study was performed. A group volunteers completed questionnaires about their feelings related to lecture halls different times year assessed current productivity. Accurate physical measurements...

The issue of thermal comfort and its subjective feelings inside a building is becoming more important in the modern world. It caused by desire to create optimal conditions places where people stay. article presents two methods, indirect direct, which are typically used research projects. These methods enable assess sensations compare respondents with value PMV (the human sensations) calculated using formula from ISO 7730 standard questionnaire surveys.

In the modern world, a person spends most of his life indoors. That is why it so important to create optimal conditions for internal environment. Research on thermal comfort and subjective feeling people inside building can help in this. The article discusses two methods that are used research sensations. This makes possible know assessment then compare this result with calculated PMV value, which using formula from ISO 7730 standard.

Abstract This paper investigates student’s thermal comfort in the intelligent building called “Energis” of Kielce University Technology located Poland, which is equipped with advanced heating, ventilation and air conditioning (HVAC) mechanical systems. One lecture theater selected for analysis. Analysis was focused on assessment sensations autumn season to determine whether modern buildings can provide adequate conditions during European transitional period, between summer winter seasons,...

Abstract Currently, more and emphasis is placed on building energy-efficient buildings from the highest quality materials to keep heat energy losses as low possible. Relatively, such are much expensive than traditional due technology that used in them. This applies HVAC systems, renewable sources etc. paper presents correctness of thermal insulation Energis intelligent at Kielce University Technology with use a imaging camera. Measurements photos were taken outside inside building, winter,...

Renewable energy sources are increasingly common in Poland, and a growing number of single-family houses now equipped with such systems. The article presents the study performance heat pump photovoltaic system installed house Swietokrzyskie Province near city Kielce. data related to thermal electrical generation throughout three years has been analysed focus on advantages offered by systems climate conditions Central Poland. It turned out that 2022 was best year for electricity production...

The present paper experimentally analyses the subjective assessment of indoor environment comfort based on a questionnaire survey conducted in climate chamber located at Kielce University Technology (Poland), if two types face masks are worn by respondents: thin (medical) and thick (cotton-made) masks. Air temperature relative humidity ranged from around 19 to 28oC 20 – 70%, respectively. Precise measurement microclimate parameters was obtained with meter, which recorded air moment...

The paper presents the results of experimental study thermal comfort in smart building Kielce University Technology (Poland). experiments were conducted throughout four seasons year and focused on developing a modified correlation that could determine sensations room users more accurately than standard methodology. Twelve groups volunteers participated study, analysed for both genders separately. Even though environment was not considered overwhelmingly favourable (with 75% men 60% women...

Renewable energy is becoming widely used all over the world nowadays. More single-family houses use such sources to generate heat and electricity. The article presents a case study of house located in central Poland, which photovoltaic system was used, additionally with other renewable sources, as small wind turbine, biomass boiler solar panels. describes advantages using building sector considered results experimental studies electricity generation given period time their analysis. It...

Nowadays, people spend most of their lives indoors, depending on the season, climate zone, work or study. Considering amount time spent in a closed environment, you should be inclined to create favourable and comfortable conditions for internal i.e. thermal comfort. The study, which was carried out an intelligent building “Energis” Kielce University Technology, bring authors closer whether such meets expectations using PMV (Predicted Mean Vote) PPD Percentage Dissatisfied) indicators...

Currently, transportation vehicles have become a location where people spend more and time. Consequently, motor should be designed with the view to provide indoor quality for all travelling there. The paper deals experimental analysis of thermal comfort conditions within cabin modern, state-of-the-art car, in order assess if required level is ensured passengers various sets air conditioning system. test performed high precision Testo 400 microclimate meter, while subjective assessments...

The article below aims to analyze the feeling of thermal comfort model in real and simulated conditions. research survey were carried out on a group students lecture hall, “Energis” intelligent building, Kielce University Technology. respondents assessed impressions situation. In climate chamber, climatic room quality simulated. Particular attention was paid temperature humidity, which set at same values as room. Two states compared, results are presented individual charts. Based tests, it...

Abstract Thermal comfort is generally determined with the Fanger model, which originates from 60’s. Its accuracy can be considered disputable and it often challenged, however basis for international standards up to this day - namely ISO 7730 ASHRAE-55 (US standard). The present work aims develop a modified correlation based on experimental measurements made questionnaires Testo 400 microclimate meter. original model in such way that concentration of carbon dioxide taken into account (the...