Development of integrated occupant-behavioural stochastic model including the fan use in Japanese dwellings

Imagawa, Hikaru; Rijal, Hom Bahadur; Shukuya, Masanori

doi:10.1016/j.enbuild.2020.110326

Cited by 20 publications

(7 citation statements)

References 38 publications

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“…Kim et al 35 observed a window‐opening peak at about 26℃, among Sydney, Australia participants in an app‐based survey. By modeling data collected from 120 apartments in an urban area of the Kanto region of Japan, Imagawa et al 36 predicted a cut‐off temperature of about 23℃. Cooler regions in Lai et al had higher cut‐off temperatures than warmer regions; the authors suggested this was because occupants were more likely to use air conditioning in warmer regions.…”

Section: Discussionmentioning

confidence: 99%

A national survey of window‐opening behavior in United States homes

Morrison

Cagle

Date³

2021

Indoor Air

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Air exchange is among the most important building parameters influencing indoor air quality and energy use. Over 18-month period we surveyed over 3800 individuals to generate a contemporary, nationwide measure of window-and door-opening behavior. We also identified influences of demographics, climate, and region. For the entire survey, including all seasons and geographic regions, 43.9% of respondents said that at least one window was open the day prior to taking the survey. Greater windowopening frequency was associated with having a lower income, living in attached homes or apartments, renting, lack of air conditioning, or being Asian or Hispanic. People living in the west and north open windows considerably more frequently and longer than those in the southeastern US. Window-opening frequency and duration increases with outdoor temperature until a maximum occurs at 18-21°C. At temperatures greater than this, window frequency decreases. The pattern roughly holds, by region, with the peak occurring at a lower temperature in the NW (12°C), and a higher temperature in the SW and SE. The frequency of door opening is roughly half that of window opening with similar, but not identical, demographic, regional, and climate associations.

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Section: Discussionmentioning

confidence: 99%

A national survey of window‐opening behavior in United States homes

Morrison

Cagle

Date³

2021

Indoor Air

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“…Rijal et al [50] monitored window opening behaviour and thermal comfort during some years in both the living rooms and bedrooms of some dwellings, and the results show that when heating systems were operating, the dwellings windows were rarely opened, while for free running mode, the winter season was the period when window opening was less, with the proportion of windows open generally being lower in bedrooms than in living rooms. Imagawa et al [51] conducted occupant behaviour surveys in some dwellings during a four-year period, and it was noticed that the proportion of window opening in winter was very low for both living rooms and bedrooms, while heating was often used until spring, from when the proportion of heating use decreased and window opening increased. Therefore, changes in occupancy are those that have some impact in defining proper indoor conditions, mainly regarding the user's heating habits: the registered temperature "peaks" decoupled from external temperature conditions are decisive in Dwelling A living room and Dwelling B bedroom, so as to present more pronounced maximum temperatures and therefore some daily time periods with acceptable indoor conditions, although the average minimum temperature values are close to those of the unheated rooms, inhabited or not.…”

Section: Discussionmentioning

confidence: 99%

Thermal Comfort Assessment during Winter Season: A Case Study on Portuguese Public Social Housing

Brandão

Lanzinha

2021

Energies

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Many public social housing building stocks were constructed before the introduction of national thermal regulations, and, as a result, in some situations, energy poverty conditioning during severe winter seasons results in little to no heating habits involving active systems in order to improve building thermal performances. Besides rigorous summer seasons, climate change predictions also indicate rigorous winter seasons will occur that will prevail in some Iberia Peninsula locations, worsening this scenario for this Southern European region. Among others, understanding the extension of discomfort in social housing buildings during heating seasons is therefore essential so as to perceive the suitability of the building stock to deal with present and future climate scenarios. Thus, this article presents a thermal comfort assessment during a winter season period applied to two social housing dwellings located in Covilhã, Portugal, inhabited by elderly residents, under realistic heating habits. An experimental campaign was performed and the results show that discomfort was found to be extremely significant for the majority of the occupied time. Passive means alone and resident heating habits were not enough to achieve proper indoor thermal and humidity conditions, resulting in important losses of well-being to the risk group of the elderly.

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“…Table 6 presents an outline of the measuring instrument. Although the recommended accuracy for the air temperature is 0.2 • C for class C instruments of thermal comfort according to the ISO 7726 [30] standard and ASHRAE 55 [31], measuring instruments with a temperature measurement accuracy of ±0.3 to ±0.5 • C are often used in many studies in Japan [8,23,24,26,32]. A globe thermometer with a diameter of 75 mm was used in the survey.…”

Section: Methods Of Indoor Thermal Environment Measurement and Questi...mentioning

confidence: 99%

Development of Adaptive Model and Occupant Behavior Model in Four Office Buildings in Nagasaki, Japan

Genjo,

Nakanishi,

Oki

et al. 2023

Energies

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A field survey of indoor environmental measurements and questionnaires on thermal sensation, overall comfort, and behaviors was conducted in four office buildings in Japan by visiting each office every month over a duration of more than a year during the coronavirus disease 2019 (COVID-19) pandemic. The indoor environment was measured concurrently. We obtained 1047 votes from office workers in their 20s to 60s. The regression and Griffiths’ methods were used to calculate the indoor comfort temperature. A logistic regression analysis was used to develop the occupant behavior model. Over 70% of the occupants found the indoor environment comfortable at a mean comfort temperature of 23.2 to 25.9 °C. Gender differences were observed in thermal sensation and overall comfort, but a gender difference was observed only in the cooling mode for the indoor comfort temperature. An adaptive model was developed for the office buildings in Nagasaki city to predict the indoor comfort temperature from the outdoor air temperature. The proportions of heating, cooling, and fan usage can be predicted from the outdoor air temperature using a logistic regression analysis. The adaptive model and occupant behavior model are useful for the indoor temperature control of the existing buildings and thermal simulation of the new building design.

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Development of integrated occupant-behavioural stochastic model including the fan use in Japanese dwellings

Cited by 20 publications

References 38 publications

A national survey of window‐opening behavior in United States homes

A national survey of window‐opening behavior in United States homes

Thermal Comfort Assessment during Winter Season: A Case Study on Portuguese Public Social Housing

Development of Adaptive Model and Occupant Behavior Model in Four Office Buildings in Nagasaki, Japan

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