Investigation of indoor thermal environment in the homes with elderly people during heating season in Beijing, China

Fan, Guangtao; Xie, Jingchao; Yokota, Hiroshi; Yanagi, U; Hasegawa, Kenichi; Wang, Chunyu; Zhang, Xiaojing; Liu, Jiaping

doi:10.1016/j.buildenv.2017.09.031

Cited by 58 publications

(24 citation statements)

References 32 publications

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“…Although the acceptable air temperature could be much wider than indicated by calculations from the TSV vote of ±0.5, this may not satisfy the long-term physical health requirements of the elderly [77]. Given that the skin temperature shows similar responses for the young and the elderly in this study and previous study [78], the relationship between TSV and skin temperature for college students in the hot humid climate zone is recommended for the elderly in this climate area [66,[79][80][81].…”

Section: The Psychological and Physiological Responses Of The Elderly In Summermentioning

confidence: 90%

Thermal adaptation of the elderly during summer in a hot humid area: Psychological, behavioral, and physiological responses

Liu

et al. 2019

Energy and Buildings

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Elderly demand for thermal comfort and energy conservation in senior citizen centers is increasing in an aging society. To reveal the thermal responses of the elderly in a warm summer environment, a field study involving experimental measurements was conducted in Chongqing, China.The study included 333 subjects in 17 residential buildings and 119 subjects in 6 elderly nursing homes; it showed that elderly persons as passive users of air conditioners preferred cooling by natural ventilation. The mean thermal sensation vote was lower than estimates obtained from the PMV model in warm environments. The physiological responses of eight elderly subjects (65 ± 3) were measured in a climate chamber at 18 °C and 34 °C and compared with those from eight college students (22 ± 1) and eight middle-aged subjects (50 ± 5). In this chamber, oral temperature, blood pressure, and heart rate of elderly and middle-aged persons were determined to be almost constant as the air temperature was changed to a hot/cold environment for 30 min, a different result from that of the young subjects. However, the skin temperature for all age groups showed variation with air temperature, suggesting skin temperature as an optimal monitoring parameter for the entire population.

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Section: The Psychological and Physiological Responses Of The Elderly In Summermentioning

confidence: 90%

Thermal adaptation of the elderly during summer in a hot humid area: Psychological, behavioral, and physiological responses

Liu

et al. 2019

Energy and Buildings

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“…In New Zealand, the mean ME difference in the living room temperature was 4.3 °C (mean evening temperature: 17.8 °C minus mean morning temperature: 13.5 °C) [ 30 ], which was larger than the 3.2 °C in the present study. In addition, in rural areas of China, the average daily variation amplitude of indoor temperature was 5.5 °C [ 31 ]. Although houses in European and American countries might have less indoor temperature instability because continuous heating is common there, indoor temperature instability might become a potential problem not only in Japan but also in other parts of the world, such as Asian and Oceanian countries.…”

Section: Discussionmentioning

confidence: 99%

Impact of indoor temperature instability on diurnal and day-by-day variability of home blood pressure in winter: a nationwide Smart Wellness Housing survey in Japan

et al. 2021

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Home blood pressure (HBP) variability is an important factor for cardiovascular events. While several studies have examined the effects of individual attributes and lifestyle factors on reducing HBP variability, the effects of living environment remain unknown. We hypothesized that a stable home thermal environment contributes to reducing HBP variability. We conducted an epidemiological survey on HBP and indoor temperature in 3785 participants (2162 households) planning to have their houses retrofitted with insulation. HBP was measured twice in the morning and evening for 2 weeks in winter. Indoor temperature was recorded with each HBP observation. We calculated the morning-evening (ME) difference as an index of diurnal variability and the standard deviation (SD), coefficient of variation (CV), average real variability (ARV) and variability independent of the mean (VIM) as indices of day-by-day variability. The association between BP variability and temperature instability was analyzed using multiple linear regression models. The mean ME difference in indoor/outdoor temperature (a decrease in temperature overnight) was 3.2/1.5 °C, and the mean SD of indoor/outdoor temperature was 1.6/2.5 °C. Linear regression analyses showed that the ME difference in indoor temperature was closely correlated with the ME difference in systolic BP (0.85 mmHg/°C, p < 0.001). The SD of indoor temperature was also associated with the SD of systolic BP (0.61 mmHg/°C, p < 0.001). The CV, ARV, and VIM showed similar trends as the SD of BP. In contrast, outdoor temperature instability was not associated with either diurnal or day-by-day HBP variability. Therefore, residents should keep the indoor temperature stable to reduce BP variability.

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“…Assim, observou-se que os idosos descreviam com maior frequência (quando comparado a grupos adultos) a sensação de neutralidade térmica tanto no inverno quanto no verão. Supostamente as alterações fisiológicas agem sobre a sensação térmica do idoso, induzindo-o a relatar uma sensação de neutralidade térmica quando as condições ambientais são de desconforto térmico (FAN et al, 2017;JIAO et al, 2017b;WANG;XIA;LU, 2017). O sexo e a obesidade também são variáveis que podem atuar na percepção da ambiência térmica (MACHADO; COELHO; COELHO, 2010).…”

Section: Conforto Térmico De Idososunclassified

A percepção da ambiência térmica e as estratégias de adaptação: estudo de caso com idosos no clima tropical

2020

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Resumo Uma parcela considerável das pesquisas sobre o conforto térmico não considera a dinâmica da relação entre os usuários e a edificação, bem como há poucos estudos sobre conforto térmico e o idoso, especialmente em clima tropical. Esta pesquisa abordou a sensação e a percepção térmica em conjunto habitacional com as estratégias de adaptação ao ambiente, tendo como população indivíduos acima de 60 anos. Para isso, foram coletados dados mediante entrevistas semiestruturadas com 90 residentes de três conjuntos habitacionais para idosos, de caráter social e mesmo projeto arquitetônico, localizados nas cidades paraibanas de João Pessoa, Campina Grande e Cajazeiras. Os dados foram analisados por meio de técnicas estatísticas descritivas e inferenciais. Os idosos apresentaram tendência a preferir condições térmicas mais amenas àquelas vivenciadas por eles na habitação em análise. A ventilação natural é considerada uma variável importante para o conforto térmico, contudo os entrevistados relatam fechar as esquadrias para evitar a entrada de insetos e animais, dificultando a ventilação natural. Também foi identificado que fatores culturais e a necessidade de segurança interferem no fechamento das aberturas. Não foram encontradas correlações significativas entre o sexo dos entrevistados e suas respostas.

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Investigation of indoor thermal environment in the homes with elderly people during heating season in Beijing, China

Cited by 58 publications

References 32 publications

Thermal adaptation of the elderly during summer in a hot humid area: Psychological, behavioral, and physiological responses

Thermal adaptation of the elderly during summer in a hot humid area: Psychological, behavioral, and physiological responses

Impact of indoor temperature instability on diurnal and day-by-day variability of home blood pressure in winter: a nationwide Smart Wellness Housing survey in Japan

A percepção da ambiência térmica e as estratégias de adaptação: estudo de caso com idosos no clima tropical

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