Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Thermal comfort in naturally ventilated dwellings in the central Mexican plateau
https://orcid.org/0000-0002-2828-2383
https://orcid.org/0000-0001-5831-1678
Abstract A third of Mexico's population (35 M people) lacks decent housing. Current efforts to improve housing focus on structural strength and security rather than thermal comfort. However, as 59% of the population earns less than the median income, the building itself must provide adequate internal temperatures, i.e., the range between the minimum temperature suggested by WHO of 18 °C, and the maximum temperatures suggested by the CIBSE TM59:2017 criteria. Despite the perception of being a “warm” country, 38% of the Mexican population lives in places where the external temperatures often drop to 0 °C in winter falling to −6 °C during seasonal cold fronts. This is worrying, as a lack of adequate protection from low indoor temperatures is associated with high excess winter mortality rates. Hence, we undertake one of the first Class-II thermal comfort studies in a cold climate in Mexican homes. For eleven months, hourly indoor environmental and occupancy data, complemented with language-localised bi-monthly thermal comfort surveys, were matched against the Adaptive and PMV thermal comfort models. We find that only 42% of the living room occupied hours were within acceptability ranges, dropping to 22% in winter. Finally, we find that current strategies for achieving homeostatic heat balance are garment based (i.e., extra blankets or clothing), in addition to electric heaters to a lesser extent. Hence, we find that Mexican houses are presently not capable of providing adequate internal thermal environments during cold periods, suggesting the need for an extensive insulation programme.
Highlights Thermal dissatisfaction is more prominent during cold seasons in the region. Results suggest higher levels of adaptation to hotter temperatures. The seasonal neutral temperatures indicate negative thermal alliesthesia. PMV method does not predict thermal comfort during cold seasons in the region. A translation to “Mexican Spanish” of the 7-point Thermal comfort scale is provided.
Thermal comfort in naturally ventilated dwellings in the central Mexican plateau
https://orcid.org/0000-0002-2828-2383
https://orcid.org/0000-0001-5831-1678
Abstract A third of Mexico's population (35 M people) lacks decent housing. Current efforts to improve housing focus on structural strength and security rather than thermal comfort. However, as 59% of the population earns less than the median income, the building itself must provide adequate internal temperatures, i.e., the range between the minimum temperature suggested by WHO of 18 °C, and the maximum temperatures suggested by the CIBSE TM59:2017 criteria. Despite the perception of being a “warm” country, 38% of the Mexican population lives in places where the external temperatures often drop to 0 °C in winter falling to −6 °C during seasonal cold fronts. This is worrying, as a lack of adequate protection from low indoor temperatures is associated with high excess winter mortality rates. Hence, we undertake one of the first Class-II thermal comfort studies in a cold climate in Mexican homes. For eleven months, hourly indoor environmental and occupancy data, complemented with language-localised bi-monthly thermal comfort surveys, were matched against the Adaptive and PMV thermal comfort models. We find that only 42% of the living room occupied hours were within acceptability ranges, dropping to 22% in winter. Finally, we find that current strategies for achieving homeostatic heat balance are garment based (i.e., extra blankets or clothing), in addition to electric heaters to a lesser extent. Hence, we find that Mexican houses are presently not capable of providing adequate internal thermal environments during cold periods, suggesting the need for an extensive insulation programme.
Highlights Thermal dissatisfaction is more prominent during cold seasons in the region. Results suggest higher levels of adaptation to hotter temperatures. The seasonal neutral temperatures indicate negative thermal alliesthesia. PMV method does not predict thermal comfort during cold seasons in the region. A translation to “Mexican Spanish” of the 7-point Thermal comfort scale is provided.
Thermal comfort in naturally ventilated dwellings in the central Mexican plateau
https://orcid.org/0000-0002-2828-2383
https://orcid.org/0000-0001-5831-1678
Abstract A third of Mexico's population (35 M people) lacks decent housing. Current efforts to improve housing focus on structural strength and security rather than thermal comfort. However, as 59% of the population earns less than the median income, the building itself must provide adequate internal temperatures, i.e., the range between the minimum temperature suggested by WHO of 18 °C, and the maximum temperatures suggested by the CIBSE TM59:2017 criteria. Despite the perception of being a “warm” country, 38% of the Mexican population lives in places where the external temperatures often drop to 0 °C in winter falling to −6 °C during seasonal cold fronts. This is worrying, as a lack of adequate protection from low indoor temperatures is associated with high excess winter mortality rates. Hence, we undertake one of the first Class-II thermal comfort studies in a cold climate in Mexican homes. For eleven months, hourly indoor environmental and occupancy data, complemented with language-localised bi-monthly thermal comfort surveys, were matched against the Adaptive and PMV thermal comfort models. We find that only 42% of the living room occupied hours were within acceptability ranges, dropping to 22% in winter. Finally, we find that current strategies for achieving homeostatic heat balance are garment based (i.e., extra blankets or clothing), in addition to electric heaters to a lesser extent. Hence, we find that Mexican houses are presently not capable of providing adequate internal thermal environments during cold periods, suggesting the need for an extensive insulation programme.
Highlights Thermal dissatisfaction is more prominent during cold seasons in the region. Results suggest higher levels of adaptation to hotter temperatures. The seasonal neutral temperatures indicate negative thermal alliesthesia. PMV method does not predict thermal comfort during cold seasons in the region. A translation to “Mexican Spanish” of the 7-point Thermal comfort scale is provided.
Thermal comfort in naturally ventilated dwellings in the central Mexican plateau
Zepeda-Gil, Carlos (Autor:in) / Natarajan, Sukumar (Autor:in)
Building and Environment ; 211
21.12.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Thermal comfort , Mexico , Housing , Adaptive model , PMV , Overheating
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