scholarly journals Assessment of the Indoor Environment in the Intelligent Building

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Luiza Dębska
Keyword(s):  
Indoor Air ◽  
Indoor Environment ◽  
Well Being ◽  
Essential Elements ◽  
Internal Environment ◽  
Intelligent Building ◽  
Intelligent Buildings ◽  
University Of Technology ◽  
Indoor Conditions ◽  
The Given

Abstract Currently, thermal comfort and indoor air quality are essential elements in designing modern and intelligent buildings or improving existing ones, so that they would provide proper indoor conditions. The article focuses on the thermal sensations of the students of Kielce University of Technology and determining whether the given parameters of the internal environment contributed to their well-being. 164 people aged 16 - 24 participated in the study, which was conducted with the use of a microclimate meter and questionnaires. It turned out that the temperature range from 19.3 °C – 27.6 °C is acceptable and comfortable for nearly 78% of people. As a result of further analysis, it turned out that the research group definitely prefers and feels better in colder temperatures.

scholarly journals Lighting conditions as the occupational health related issue – case study

2022 ◽  
Vol 354 ◽  
pp. 00059
Author(s):  
Luiza Dębska ◽  
Anita Białek
Keyword(s):  
Experimental Tests ◽  
Public Utility ◽  
Intelligent Building ◽  
Intelligent Buildings ◽  
Lighting Conditions ◽  
University Of Technology ◽  
Health Related ◽  
Different Seasons ◽  
Lighting Intensity

The paper deals with the important element of proper lighting conditions at a workplace. The case study has been focused on the intelligent building “Energis” of Kielce University of Technology, where the experimental tests took place. Several groups of volunteers filled in the questionnaires related to their subjective feelings of lighting conditions in lecture rooms at different seasons. Simultaneously, precise measurements of lighting intensity were carried out. The comparison of the expressions of the room users and the measurements enabled to draw conclusions about the conditions provided in the intelligent building related to lighting. The study provides valuable information of lighting conditions in the modern, intelligent buildings which are more and more common throughout the world and serve various purposes such as office, educational or other public utility buildings.

scholarly journals Design and implementation of intelligent building / smart building

2021 ◽  
Author(s):  
Dipak Patel
Keyword(s):  
Systems Integration ◽  
Integrated Approach ◽  
Well Being ◽  
Service Systems ◽  
Intelligent Building ◽  
Cultural Changes ◽  
Smart Building ◽  
Intelligent Buildings ◽  
Technological Developments ◽  
Extended Function

The intelligent building is supposed to provide the environment and means for an optimal utilization of the building, according to its designation. This extended function of a building can be achieved only by means of an extensive use of building service systems, such as HVAC, electric power, communication, safety and security, transportation, sanitation, etc. Building intelligence is not related to the sophistication of service systems in a building, but rather to the integration among the various service systems, and between the systems and the building structure. Systems' integration can be accomplished through teamwork planning of the building, starting at the initial design stages of the building. This paper examines some existing buildings claimed to be “intelligent”, according to their level of systems' integration. Intelligent buildings respond to the needs of occupants and society, promoting the well-being of those living and working in them and providing value through increasing staff productivity and reducing operational costs. Intelligent Buildings considers cultural changes affecting the way people live and work, the importance of an integrated approach to design and management and the benefits technological developments can bring in developing sustainable buildings that meet users' needs.

scholarly journals The Role of Microscopy in Indoor Air Quality Investigations

2004 ◽  
Vol 12 (2) ◽  
pp. 28-31
Author(s):  
R.B. Simmons
Keyword(s):  
Indoor Air ◽  
Indoor Environment ◽  
Fungal Species ◽  
Negative Effects ◽  
Handling System ◽  
System Components ◽  
Dormant Forms ◽  
Bacteria And Fungi ◽  
Indoor Conditions

Numerous studies have demonstrated that fungi are capable of colonizing a range of indoor construction and finishing materials as well as a number of air handling system components. Many of the species found are known to produce mycotoxins and demonstration of the presence of ‘toxic mould’ in both the workplace and in dwellings has become a major issue. Mould issues now are the focus of litigation or are currently in contention in a number of states and hundreds of millions of dollars are at stake.The indoor environment harbors a variety of microorganisms, including bacteria and fungi. Under normal indoor conditions most of these organisms are present as dormant forms. The fungi persist either as conidia (asexual spores), sexual spores, or hyphal fragments. The presence of water in an environment may lead to the growth and proliferation of fungal species, sometimes resulting in deterioration of the colonized substrates with possible negative effects on IAQ.

scholarly journals The comparison of thermal comfort test results in selected traditional and modern buildings

2021 ◽  
Vol 286 ◽  
pp. 02008
Author(s):  
Natalia Krawczyk ◽  
Justyna Krakowiak
Keyword(s):  
Renewable Energy ◽  
Thermal Comfort ◽  
Indoor Air ◽  
Electricity Generation ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Test Results ◽  
Intelligent Building ◽  
Heating And Cooling ◽  
University Of Technology

The use of renewable energy sources in buildings is more and more common (both for heating and cooling purposes, as well as electricity generation). The paper focuses on the thermal comfort tests in two buildings: the traditional one (that uses non-renewable sources of energy) and the modern intelligent building “Energis” of Kielce University of Technology. The thermal sensations of students in these two buildings have been compared based on the questionnaire survey and conclusions have been drawn regarding the differences between the feelings of thermal comfort in those two buildings. Apart from subjective feelings of the volunteers, the measurements of indoor air parameters were conducted in both buildings and have been presented in the paper.

scholarly journals Modelling VOC Emissions from Building Materials for Healthy Building Design

2020 ◽  
Vol 13 (1) ◽  
pp. 184
Author(s):  
Alessandro D’Amico ◽  
Agnese Pini ◽  
Simone Zazzini ◽  
Daniela D’Alessandro ◽  
Giovanni Leuzzi ◽  
...  
Keyword(s):  
Indoor Air ◽  
Indoor Environment ◽  
Building Materials ◽  
Numerical Models ◽  
Building Design ◽  
Well Being ◽  
Absolute Number ◽  
Progressive Increase ◽  
Good Correspondence ◽  
Guide Value

The profound qualitative changes of indoor air and the progressive increase in the absolute number of pollutants, combined with the scientific awareness of the health impacts deriving from spending more than 90% of one’s time inside confined spaces, have increased the attention onto the needs of well-being, hygiene, and the health of users. This scientific attention has produced studies and analyses useful for evidence-based insights into building performance. Among the main pollutants in the indoor environment, Volatile Organic Compounds (VOCs) play a central role, and the use of box-models using the mass balance approach and Computational Fluid Dynamics (CFD) models are now consolidated to study their concentrations in an indoor environment. This paper presents the use of both types of modelling for the prediction of the VOC concentration in the indoor environment and the proposal of a guide value for the Indoor Air Quality (IAQ)-oriented building design, specifically related to the indoor VOC concentration due to building materials. Methodologically, the topic is addressed through environmental sampling, the definition of the parameters necessary for the numerical models, the simulations with the box-model and the CFD, and the comparison between the results. They show a good correspondence between the modelling tools used, highlighting the central role of ventilation and allowing a discussion of the relationship between regulatory limits of emissivity of materials and Indoor Air Guide Values for the concentration of pollutants.

scholarly journals Thermal energy constant temperature control system of building energy system based on dynamic analysis method

2021 ◽  
Vol 25 (4 Part B) ◽  
pp. 2881-2888
Author(s):  
Hui Fu
Keyword(s):  
Control System ◽  
Dynamic Analysis ◽  
Constant Temperature ◽  
Air Temperature ◽  
Temperature Control ◽  
Indoor Environment ◽  
Temperature Control System ◽  
Analysis Method ◽  
Intelligent Building ◽  
Intelligent Buildings

If the intelligent building?s indoor environment?s constant temperature is accurately controlled, the comfort of the building can be improved. When we perform constant temperature control, there will be large fluctuations in the supply air temperature, which results in the traditional methods that cannot control the temperature within a reasonable range. Therefore, the paper proposes an optimal control method for the indoor environment constant temperature of intelligent buildings. In the IoT environment, we integrate the multi-agent technology to design the temperature fuzzy control structure, determine the input and output variables of the intelligent building temperature control system and its fuzzy set, use the dynamic analysis method to modify the fuzzy rules, and integrate it with bilinear The control algorithm builds a dynamic temperature control model for intelligent buildings to maintain the indoor temperature at the set value when the supply air temperature fluctuates significantly. This method makes up for the shortcomings that the current system cannot adapt to the intelligent building environment changes. The simulation results show that compared with the traditional algorithm, the improved algorithm can significantly improve the robustness of the intelligent building constant temperature control, and the temperature control stability is vital.

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

Energies ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1973
Author(s):  
Grzegorz Majewski ◽  
Łukasz J. Orman ◽  
Marek Telejko ◽  
Norbert Radek ◽  
Jacek Pietraszek ◽  
...  
Keyword(s):  
Thermal Comfort ◽  
Indoor Environment ◽  
Thermal Environment ◽  
Thermal Sensation ◽  
Carbon Dioxide Concentration ◽  
Well Being ◽  
Environment Quality ◽  
Intelligent Buildings ◽  
Indoor Environment Quality ◽  
Very High

The paper analyses the indoor environment in two modern intelligent buildings located in Poland. Measurements of air and globe temperatures, relative humidity and carbon dioxide concentration in 117 rooms carried out in the space of 1.5 years were presented. Thermal comfort of the occupants has been investigated using a questionnaire survey. Based on 1369 questionnaires, thermal sensation, acceptability and preference votes were analysed in view of their interdependency as well as their dependency on operative temperature, which proved to be very strong. It has been found that the respondents did not completely rate thermal comfort and indoor environment quality as very high, although the overwhelming sensations were positive. Apart from the operation of heating, ventilation and air conditioning (HVAC) systems, this might have also been the cause of individual human factors, such as body mass index, as tested in the study, or the finding that people were generally in favour of a warmer environment. Moreover, thermal environment proved to be the most important element for ensuring the well-being of the occupants.

scholarly journals Design and implementation of intelligent building / smart building

2021 ◽  
Author(s):  
Dipak Patel
Keyword(s):  
Systems Integration ◽  
Integrated Approach ◽  
Well Being ◽  
Service Systems ◽  
Intelligent Building ◽  
Cultural Changes ◽  
Smart Building ◽  
Intelligent Buildings ◽  
Technological Developments ◽  
Extended Function

The intelligent building is supposed to provide the environment and means for an optimal utilization of the building, according to its designation. This extended function of a building can be achieved only by means of an extensive use of building service systems, such as HVAC, electric power, communication, safety and security, transportation, sanitation, etc. Building intelligence is not related to the sophistication of service systems in a building, but rather to the integration among the various service systems, and between the systems and the building structure. Systems' integration can be accomplished through teamwork planning of the building, starting at the initial design stages of the building. This paper examines some existing buildings claimed to be “intelligent”, according to their level of systems' integration. Intelligent buildings respond to the needs of occupants and society, promoting the well-being of those living and working in them and providing value through increasing staff productivity and reducing operational costs. Intelligent Buildings considers cultural changes affecting the way people live and work, the importance of an integrated approach to design and management and the benefits technological developments can bring in developing sustainable buildings that meet users' needs.

scholarly journals Barriers on Establishing Passive Strategies in Office Spaces: A Case Study in a Historic University Building

2021 ◽  
Vol 13 (8) ◽  
pp. 4563
Author(s):  
Nuno Baía Baía Saraiva ◽  
Luisa Dias Dias Pereira ◽  
Adélio Rodrigues Gaspar ◽  
José Joaquim da Costa
Keyword(s):  
Thermal Comfort ◽  
Indoor Environment ◽  
Hvac Systems ◽  
Heritage Buildings ◽  
Full Capacity ◽  
Free Cooling ◽  
Passive Strategies ◽  
The University ◽  
Indoor Conditions

The adaptation of spaces to different usage typologies can be complex in heritage buildings. Facilities were initially planned for a specific type of use that, when changed, require additional measures to ensure a suitable indoor environment. Passive strategies—e.g., free cooling—are commonly used as an alternative without requiring equipment installation. However, its implementation often leads to unsatisfactory conditions. Therefore, it is important to clarify the main barriers to achieving thermal comfort in readapted historic buildings. The present work investigates the thermal comfort conditions reported by workers in office spaces of a historic building in the University of Coimbra. A monitoring campaign was carried out between May and September 2020 to assess indoor conditions’ quality. Due to the current pandemic of COVID-19, offices were not occupied at full capacity. A one-day evaluation of thermal comfort was made using a climate analyzer and six occupants were surveyed on 19 August 2020. The main results highlighted discomfort due to overheating of spaces. The causes were related to the combination of inadequate implementation of the free cooling actions and the building use. Furthermore, it was recommended the installation of HVAC systems in case of full capacity.

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