Investigation of indoor thermal comfort in warm-humid conditions at a German climate test facility

Kleber, Michael; Wagner, Andreas

doi:10.1016/j.buildenv.2017.11.018

Cited by 14 publications

(7 citation statements)

References 20 publications

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“…In Reference [40], Simonson stated that humidity is exactly twice as important for IAQ than for thermal comfort. Investigation of indoor thermal comfort in hot and humid conditions in a German climate test facility was analysed by Kleber et al [28]. The tests were conducted in a similar temperature and humidity range and the impact of humidity and temperature on the air quality perceived by subjects was taken into account.…”

Section: Discussionmentioning

confidence: 99%

“…The results on human perception to high humidity in higher temperatures, as provided in Reference [27], indicated that the impact of humidity on human responses was significant and increased with an increase in air temperature when the relative humidity was above 70%. The indoor comfort in hot-humid conditions was also studied by Kleber and Wagner [28]. A total of 136 subjects were tested in a climate chamber with specific hot-humid conditions in a test facility at the Karlsruhe Institute of Technology.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The direct impact of air humidity on air quality has been studied in a relatively small number of papers. The perception of IEQ in hot humid conditions was studied in References [7,15] in ventilated ecological houses [40] and in a climate test facility [28], where for higher temperatures and humidity, the dissatisfaction of users with indoor air quality (respiratory cooling) is higher than the discomfort associated with the thermal sensation. Taking this into consideration, the authors' intention was to analyse the actual humidity impact on the perception of building occupants in an experimental study, taking place in a test chamber located in a low-energy building.…”

Section: Research Hypothesismentioning

confidence: 99%

“…Comparison of the experimental results of indoor discomfort perception (log.PD_exp) with the former research presented by Kleber (PD _Kleber )[28] and Simonson (PD _Simonson )[40].…”

mentioning

confidence: 97%

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Air Enthalpy as an IAQ Indicator in Hot and Humid Environment—Experimental Evaluation

et al. 2020

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The authors studied the impact of indoor air humidity in the range of 60% to 90% on building user perception in the temperature range of 26 to 28 °C. The research thesis was put forward that the impact of humidity on indoor air quality dissatisfaction of building users in a warm and humid indoor environment is greater than that indicated in thermal comfort models. The presented experiment examined the indoor air quality perception of n = 28 subjects in the test chamber of a nearly zero energy building under ten environmental conditions, together with a thermal comfort assessment. The authors developed an experimental relation for predicting building users’ satisfaction based on the Weber–Fechner law, where the predicted percentage of dissatisfied users (PD) is determined by means of air enthalpy (h), PD = f(h). The obtained results confirmed the sated thesis. Additionally, the intersection points of the experimental function and isotherms resulting from the Fanger model are presented, where the thermal comfort assessment starts to indicate lower user dissatisfaction results than experimental values. The authors recommend the experimental equation for humid air enthalpies in the range of 50 to 90 kJ/kg. The indoor air quality assessment based on the enthalpy value is simple and can be used to determine the overall Indoor Environmental Quality index of a building (IEQindex).

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Section: Discussionmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Section: Research Hypothesismentioning

confidence: 99%

“…Comparison of the experimental results of indoor discomfort perception (log.PD_exp) with the former research presented by Kleber (PD _Kleber )[28] and Simonson (PD _Simonson )[40].…”

mentioning

confidence: 97%

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Air Enthalpy as an IAQ Indicator in Hot and Humid Environment—Experimental Evaluation

et al. 2020

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“…As typical residential buildings in temperate climate zones are not actively cooled and are manually controlled by the users in summer, we also skip lab studies (e.g., [ 15 ]) and studies on control strategies, air-conditioning, or other HVAC systems, specific technologies (e.g., green facades, cool roofs, urban, and micro-climate), and studies in hot and humid regions (e.g., Latin America, South Asia, or Africa).…”

Section: Introductionmentioning

confidence: 99%

Towards a Generic Residential Building Model for Heat–Health Warning Systems

Pfafferott

Rißmann

Halbig

et al. 2021

IJERPH

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A strong heat load in buildings and cities during the summer is not a new phenomenon. However, prolonged heat waves and increasing urbanization are intensifying the heat island effect in our cities; hence, the heat exposure in residential buildings. The thermophysiological load in the interior and exterior environments can be reduced in the medium and long term, through urban planning and building physics measures. In the short term, an increasingly vulnerable population must be effectively informed of an impending heat wave. Building simulation models can be favorably used to evaluate indoor heat stress. This study presents a generic simulation model, developed from monitoring data in urban multi-unit residential buildings during a summer period and using statistical methods. The model determines both the average room temperature and its deviations and, thus, consists of three sub-models: cool, average, and warm building types. The simulation model is based on the same mathematical algorithm, whereas each building type is described by a specific data set, concerning its building physical parameters and user behavior, respectively. The generic building model may be used in urban climate analyses with many individual buildings distributed across the city or in heat–health warning systems, with different building and user types distributed across a region. An urban climate analysis (with weather data from a database) may evaluate local differences in urban and indoor climate, whereas heat–health warning systems (driven by a weather forecast) obtain additional information on indoor heat stress and its expected deviations.

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Measurements of Perceived Indoor Air Quality

Wargocki

Kostyrko

2022

Handbook of Indoor Air Quality

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Investigation of indoor thermal comfort in warm-humid conditions at a German climate test facility

Cited by 14 publications

References 20 publications

Air Enthalpy as an IAQ Indicator in Hot and Humid Environment—Experimental Evaluation

Air Enthalpy as an IAQ Indicator in Hot and Humid Environment—Experimental Evaluation

Towards a Generic Residential Building Model for Heat–Health Warning Systems

Measurements of Perceived Indoor Air Quality

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