Adaptive behaviour and air conditioning use in Brazilian residential buildings

Ramos, Greici; Lamberts, Roberto; Abrahão, Karla Cristina de Freitas Jorge; Bandeira, Fernanda Brito; Teixeira, Carla Fernanda Barbosa; Lima, Mariana Brito de; Broday, Evandro Eduardo; Castro, Adriana P. A. S.; Leal, Lilianne de Queiroz; Vecchi, Renata De; Zorzi, Lizia De Moraes De; Dornelles, Kelen Almeida; Duarte, Silvia; Faísca, Renata Gonçalves; Fontenelle, Marília Ramalho; Freitas, Thyago Phellip; Atem, Camila Gregório; Grigoletti, Giane de Campos; Maciel, Liliane; Moraes, Clélia Mendonça de; Mueller, Cecilia M.; Sartori, Thais; Silva, Bárbara; Silva, Caio Frederico e; Silva, Marcelle Vilar da; Silveira, Ana Lucia; Souza, Roberta Vieira Gonçalves de; Xavier, Antônio Augusto de Paula

doi:10.1080/09613218.2020.1804314

Cited by 27 publications

(10 citation statements)

References 34 publications

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“…The implication was over-adaptation: using AC not to offset the worst heat nor to bring temperatures within a range of tolerability but to set the temperature to arbitrarily low levels. A study in Brazil similarly found that the lowest AC setpoint temperature was used in the hottest region (Ramos et al 2021). As noted above, there was even an element of boasting from one participant who detailed the extra clothing she needed at night due to AC-induced low temperatures, in line with earlier findings of excessively low night-time AC settings in Oman (Majid et al 2014).…”

Section: Discussionmentioning

confidence: 99%

Living with air-conditioning: experiences in Dubai, Chongqing and London

Murtagh

Badi

Shi

et al. 2022

Buildings and Cities

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Extreme heat is a likely consequence of global warming, leading to increased mortality and reduced wellbeing. There is limited research evidence of experiences of living with and without air-conditioning (AC), commonly regarded as the sole technological solution, but such knowledge is essential to progressing alternative approaches. A total of 72 participants were interviewed in an exploratory cross-cultural phenomenological study in Dubai (United Arab Emirates-UAE), Chongqing (China) and London (UK). In Dubai and Chongqing, AC was ubiquitous and central to life in the hotter months, although not for all socio-economic groups. AC enabled indoor work to proceed, but a restricted indoor life meant less exercise, less social interaction and health issues. Participants had overadapted, not to heat but to cold indoor temperatures, which were uncomfortable for many. In London, AC was not yet used, but the purchase of AC was being contemplated. The London participants showed a range of behavioural adaptations to heat. To reduce dependence on AC, regulations and behaviour change interventions regarding AC settings should focus on acclimatisation to heat. Changes in societal patterns, such as workhours, and behavioural adaptations, such as informed use of shading, can help mitigate heat. Deconstruction of the meanings of AC-related thermal comfort is needed to incorporate physiological, behavioural and social responses. POLICY RELEVANCEThe study findings show the following: AC technology is already culturally embedded in societies in hot climates, but is not yet seen as a necessity in temperate climates, offering a window of opportunity. This window could close rapidly, so initiatives are needed now to encourage householders to improve heat protection around their homes.

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Section: Discussionmentioning

confidence: 99%

Living with air-conditioning: experiences in Dubai, Chongqing and London

Murtagh

Badi

Shi

et al. 2022

Buildings and Cities

View full text Add to dashboard Cite

show abstract

“…A sensação de isolamento em relação ao ambiente externo também pode influenciar o relato de sintomas (SEPPÄNEN;FISK, 2002). A memória térmica influencia a avaliação do usuário: pessoas com maior tempo de exposição a ambientes com AC são mais predispostas a preferir esta solução para seu conforto; e pessoas com pouca ou nenhuma exposição a ambientes com AC tendem a preferir a ventilação natural (CÂNDIDO et al, 2010;RAMOS et al, 2020;VECCHI;LAMBERTS, 2016).…”

Section: Ventilação Natural × Ar-condicionadounclassified

Saúde e Conforto no Ambiente Climatizado: o Papel da Ventilação na Qualidade do ar Interno

Oranje¹,

Ueno²

2022

Agendas Locais E Globais Da Sustentabilidade: Ciência, Tecnologia, Gestão E Sociedade

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“…Infiltration and ventilation rates were set as 1/hour, according to the Brazilian standard NBR 15575 [38] . Regarding internal gains, simulations considered thermal Distributed under creative commons license 4.0 loads from the rooms' occupancy (people, lighting, and equipment), according to a typical Brazilian family [7] for which this kind of buildings are designed for (low-cost houses): 2 adults (100 W/person) and 2 children (60 W/ person) in sedentary activities; lighting (18 h-24 h, 100 W) and TV (15 h-24 h, 50 W); kitchen equipment (lighting: 2 h/day, 100 W/hour; refrigerator: 24 h/day, 90 W/h; stove: 8 h/day, 60 W).…”

Section: Figure 2 Case Study -Reference Buildingmentioning

confidence: 99%

“…According to the Brazilian standard NBR 15220-3 [6] , the country is mainly characterized by tropical and hot conditions, with solar radiation levels sufficiently high and no active heating required for buildings even during the winter season. In contrast, the summer overheating usually adversely influences indoor comfort conditions in the built environment and increases energy need for cooling systems [7] .…”

Section: Introductionmentioning

confidence: 99%

Effect of Aging on Solar Reflectance of White Cool Roof Coatings: Natural Weathering and the Influence on Building Energy Needs for Different Climate Conditions in Brazil

Dornelles

2021

j. of archit. environ. & struct. eng. res.

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The use of cool materials on the building envelope is one of the most cost-effective ways to increase indoor thermal comfort conditions in hot climates and decrease the cooling energy needs. Despite the benefit of reducing cooling loads, researches have demonstrated that aging of roof coatings changes the initial SR, which influences the long term building thermal and energy performance. Thus, this work presents preliminary natural weathering tests performed on samples of nine white coatings exposed to natural weathering for one year in the city of Sao Carlos, Brazil. Solar reflectances were measured with a spectrophotometer before and after exposure, every 3 months, for identifying the effect of aging along the time. The findings showed a decrease on the SR from 13% to 23% after one year of natural weathering, with higher decrease for rougher surfaces. The cleaning process restored from 90% to 100% of the original SR, which means maintenance can be an effective solution to restore the initial SR. Simulations indicated that roofs with higher SR increase indoor thermal comfort conditions and decrease the cooling energy need for buildings in hot climates, but the aging of white coatings increased the cooling energy needs along the time.

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Adaptive behaviour and air conditioning use in Brazilian residential buildings

Cited by 27 publications

References 34 publications

Living with air-conditioning: experiences in Dubai, Chongqing and London

Living with air-conditioning: experiences in Dubai, Chongqing and London

Saúde e Conforto no Ambiente Climatizado: o Papel da Ventilação na Qualidade do ar Interno

Effect of Aging on Solar Reflectance of White Cool Roof Coatings: Natural Weathering and the Influence on Building Energy Needs for Different Climate Conditions in Brazil

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