Improving the indoor air quality using the individual air supply system

Zender–Świercz, Ewa

doi:10.1007/s13762-017-1432-x

Cited by 11 publications

(8 citation statements)

References 7 publications

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“…As a result of this, actions are undertaken to seal and thermally insulate the building fabric and partitions. These procedures restrict air exchange in a room equipped with natural ventilation [11,12]. A reduced volume of air entering a building negatively affects the indoor air quality and induces a rise in the temperature, humidity, and pollution volume.…”

Section: Introductionmentioning

confidence: 99%

Microclimate in Rooms Equipped with Decentralized Façade Ventilation Device

Zender–Świercz

2020

Atmosphere

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Many building are characterized by insufficient air exchange, which may result in the symptoms of sick building syndrome (SBS). A large number of existing buildings are equipped with natural ventilation, whose work is disturbed by activities going to energy-saving. The thermomodernization activities are about mounting new sealed windows and laying thermal isolation, which reduces the amount of infiltrating/exfiltrating air. In many cases, the mechanical ventilation cannot be used due to a lack of a place in building or architectural and construction requirements. One of the solutions to improve the indoor microclimate is the decentralized façade ventilation. In the article, the internal air parameters in an office room equipped with decentralized façade ventilation device were analyzed. The room was equipped with a decentralized façade unit, which cyclically supplied and removed air from the room. The time of the supply/exhaust was changed to 2 min, 4 min, and 10 min. The temperature and the humidity of the indoor air and the outdoor air and the concentration of carbon dioxide inside the room were measured. The analysis showed that despite the lack of a heater in the device, the air temperature in the workplace and in the central point of the room was in the range of 20–22 °C. The air humidity was in the range of 27–43%.

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Section: Introductionmentioning

confidence: 99%

Microclimate in Rooms Equipped with Decentralized Façade Ventilation Device

Zender–Świercz

2020

Atmosphere

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“…As compared to Evola et al [6] the cost of keeping the 600 ppm of CO 2 is about the same and supports the thesis of better indoor air quality kept by double -flow DCV mechanical ventilation. As in Zender-Swiercz [33] the right CO 2 concentration is better kept by mechanical, DCV ventilation.…”

Section: Comparison Of Analysed Scenariosmentioning

confidence: 76%

Indoor Air Quality Assessment in a Single-Family House Equipped with Demand Controlled Mechanical Ventilation

Müller

Debowski

2020

Ecological Chemistry and Engineering S

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The paper presents the results of modelling airflow for ventilation of a single-family house with an area of 180 m2. The building was equipped with mechanical ventilation with the possibility of varying the airflow. The airflow was calculated as a function of carbon dioxide concentration. The presence of people in selected rooms was an internal source of carbon dioxide. In order to properly design of a ventilation system and then model the contamination level, ContamW software was used. The year-long cost analysis was carried out for the installation working with variable airflow (day, night). The analysis took into account the price of the electricity used by the fans of Air Handling Unit and meteorological data to estimate the power input to the heater of the Unit. Different scenarios of system operation were included as an input data in order to find a difference in energy consumption. The calculations were to answer the question of whether it is necessary to apply expensive and advanced system that enables individual control of the airflow in every room or use the simple control of the central unit to vary the airflow in the ventilation system of single-family houses. The difference in operating cost between the system that maintains 800 and 600 ppm reaches 100 % and demonstrates the need of simple demand controlled ventilation system.

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“…The respondents complained about poor ventilation performance because of the lack of operable windows. The problem of inadequate ventilation has also been addressed in [13,14]. On the other hand, Aflaki et al [15] performed tests in a library building in the tropics and found that the average carbon dioxide concentration was ca.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Indoor Environmental Quality and Self-Reported Productivity in Intelligent and Traditional Buildings

Orman,

Krawczyk,

Radek

et al. 2023

Energies

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People tend to spend considerable amounts of time in buildings; thus the issue of providing proper indoor environmental quality is of significant importance. This paper experimentally analyses the subjective sensations of the occupants of intelligent and traditional buildings with the focus on possible differences between these two types of buildings. The study is based on a large database of 1302 questionnaires collected in 92 rooms where simultaneous measurements of the indoor environment physical parameters (air and globe temperature, relative humidity, carbon dioxide concentration, and illuminance) were carried out. Their impact on the subjective assessment of the indoor environment has been presented and analysed. The results show that the occupants seemed to be more favourable towards the indoor conditions in the intelligent building; however, the differences in comparison to the traditional buildings were not considerable. Similarly, self-reported productivity proved to be higher in the intelligent building, while the optimal range of air temperature, which ensured highest productivity, was 22–25 °C. Moreover, a strong correlation between the occupants’ overall comfort and their perception of the air quality has been found.

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Improving the indoor air quality using the individual air supply system

Cited by 11 publications

References 7 publications

Microclimate in Rooms Equipped with Decentralized Façade Ventilation Device

Microclimate in Rooms Equipped with Decentralized Façade Ventilation Device

Indoor Air Quality Assessment in a Single-Family House Equipped with Demand Controlled Mechanical Ventilation

Comparative Analysis of Indoor Environmental Quality and Self-Reported Productivity in Intelligent and Traditional Buildings

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