Study of human response in conditions of surface heating, asymmetric radiation and variable air jet direction

Kalmár, Ferenc; Kalmár, Tünde

doi:10.1016/j.enbuild.2018.09.016

Cited by 16 publications

(10 citation statements)

References 52 publications

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“…During the experiments, researchers usually worked with 20 subjects. The results were published in several articles by F. Kalmár et al [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 94%

“…A few years ago, at the University of Debrecen Faculty of Engineering, Department of Building Services and Building Engineering, an innovative personalized ventilation system was developed named ALTAIR. During the experiments, the circulated airflow was 20 m 3 h −1 and the researchers used another ATD type [12][13][14][15][16][17].…”

Section: Atds and Experimental Proceduresmentioning

confidence: 99%

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Air Terminal Devices Developed for Personal Ventilation Systems

Csáky

2020

Energies

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Using the personal ventilation systems may improve the thermal comfort sensation. At the University of Debrecen, a personal ventilation system was developed named ALTAIR. This paper presents the results of mean air velocity, turbulence grade, and draught measurements related to newly developed air terminal devices which are connected to the ALTAIR personal ventilation system. In order to define the measurement points it was essential to test the new air terminal devices (ATDs) in front of a black wall and smoke puffs. A series of measurements were carried out with isothermal air flow, mean air velocity, turbulence grade, and draught around the occupant head region in order to improve the thermal comfort sensation. Five different ATDs were analyzed.

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“…During the experiments, researchers usually worked with 20 subjects. The results were published in several articles by F. Kalmár et al [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 94%

Section: Atds and Experimental Proceduresmentioning

confidence: 99%

Air Terminal Devices Developed for Personal Ventilation Systems

Csáky

2020

Energies

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“…ALTAIR operates like a hand-held fan, the time steps of changing the air flow direction and the air flow velocity can be chosen by the user (Figure 1). In the Indoor Environment Quality laboratory of the University of Debrecen, numerous measurements were carried out testing the ALTAIR equipment under elevated operative temperatures and asymmetric radiations [32][33][34].…”

Section: Altair Pv Systemmentioning

confidence: 99%

“…Our first step was to define the flow domain where the analysis was carried out. The geometry was a digital copy of the Indoor Environment Quality Laboratory of the University of Debrecen, where the measurements were taken with the ALTAIR [34]. In this 2.5 m wide, 3.65 m long, 2.55 m high room (Figure 4), the ALTAIR can be found.…”

Section: Geometry and Meshmentioning

confidence: 99%

“…In the validation process we examined how closely we could approach this value. It was known from a previous research paper [34] that the average face temperature (AFT) was 32 • C for male participants and this parameter was chosen as the validation parameter. For validation 1.6 • C (5% of 32 • C) accuracy was chosen because the complexity of the model could cause such a degree of deviation.…”

Section: Physics Modelmentioning

confidence: 99%

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Simulation of Temperature Distribution on the Face Skin in Case of Advanced Personalized Ventilation System

Szodrai

Kalmár

2019

Energies

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Energy saving is one of the most important research directions in the building sector. Personalized ventilation systems are energy conscious solutions providing fresh air for the occupants. As a side effect, cooling energy can be saved due to higher convective heat removal. Using the data gathered from previous experiments performed with the developed personalized ventilation system, a ±1.408 °C accurate simulation model was created in ANSYS 19.2 Academic version in order to determine the temperature distribution on the face. In this paper, the method and the first results are presented. It was clearly demonstrated by measurements and simulations that the personalized ventilation equipment used has a considerable effect on the skin temperature of the face. The developed model can be used to analyze the skin temperature on the faces of people using the novel, personalized ventilation equipment. This way the time spent on examination can be reduced considerably.

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