Development and analysis of a metamodel to represent the thermal behavior of naturally ventilated and artificially air-conditioned residential buildings

Melo, A.P.; Fossati, Michele; Versage, R.S.; Sorgato, Márcio José; Scalco, Veridiana Atanasio; Lamberts, Roberto

doi:10.1016/j.enbuild.2015.12.021

Cited by 33 publications

(14 citation statements)

References 15 publications

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“…For example, values related to windows are not established in Brazil. For this case, a thermal transmittance of 5.7 (W•m −2 •K −1 ) was considered for the windows designed in all climate zones of Brazil, as it is representative of the type of window most used in the country [60]. As for countries that do not establish limit values of thermal transmittance of floors in contact with the air, and similar to what the Spanish regulation establishes, the limit value for roofs was the same for floors.…”

Section: Case Studymentioning

confidence: 99%

A Comparative Analysis of the International Regulation of Thermal Properties in Building Envelope

et al. 2019

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To achieve the goals of reducing building energy consumption, regulations are being designed to guarantee the appropriate energy performance of buildings. Both European and South American countries establish requirements of thermal properties of building envelope according to the climate zone, thus implying notable differences in climate classifications and technical requirements. This research provides a general view of advantages and limitations between the different state regulations of three South American countries (Argentina, Brazil, and Chile) and three European countries (Spain, Portugal, and France). A total of 792 simulations were conducted with Energy Plus by considering 12 different dwelling typologies in 66 climate zones. Building envelopes were adapted to the regulations of the various countries. Results showed tendencies of performance clearly different between the South American and the European countries, with the latter being those with the lowest energy demands. The cluster analysis of distributions of energy demand revealed that buildings located in similar climates but in different countries present very different energy performances. This research opens up the discussion on the development of more demanding policies related to thermal properties of buildings. Also, the analysis at a continental scale could reduce the differences between countries and guarantee a more sustainable life for the building stock.

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Section: Case Studymentioning

confidence: 99%

A Comparative Analysis of the International Regulation of Thermal Properties in Building Envelope

et al. 2019

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“…The accuracy of the assessment method for Brazilian energy efficiency labelling regulations has been rigorously tested in the last ten years. Several researchers have tested the method or validated the models presented in the Brazilian regulation with ANSI/ ASHRAE Standard 90.1 (Melo et al, 2014), BESTEST (Melo et al, 2011;2012), EnergyPlus or DAYSIM simulations (Fernandes and Labaki, 2012;Reckes et al, 2016;Melo et al, 2016). Parametric studies involving load density of equipment, shape factor, envelope thermal transmittance were carried out as well (Brandalise et al, 2016).…”

Section: Certificationmentioning

confidence: 99%

Comparing energy efficiency labelling systems in the EU and Brazil: Implications, challenges, barriers and opportunities

Wong

Krüger

2017

Energy Policy

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In the last 30 years, voluntary and mandatory environmental or energy certification schemes have been introduced in the building sector in most developed countries. During the last decade, in Brazil, the document Energy Efficiency Rating Technical Quality Regulations for Commercial, Service and Public Buildings (RTQ-C) was introduced to classify buildings according to their energy efficiency level. This paper aims to assess how Brazilian RTQ-C could learn from the European Union (EU)'s experience of implementing the Directive 2010/31/EU. The implementation of the RTQ-C in Brazil has been examined and compared with the EU's Directive. Technical, economic and social issues as well as barriers and challenges behind the initial stage of the Directive 2010/31/EU implementation were examined. The difficulties and weaknesses of the calculation methodology, scope and labelling of the Brazilian RTQ-C regulations, and potential areas that require further research have been identified and summarised. In order to increase the impact of RTQ-C regulations, improvements to the existing calculation methodology and tools, provision of numerous supporting measures, such as an increase in training, education, public awareness and incentives, and enforcement through building regulations or standards are essential. The valuable experience from the EU's implementation of the Directive could be used to guide the development of energy policies and certification regulations in Brazil.

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“…Regarding space conditioning, this approach has been reasonably successful in buildings with heating, ventilation and air conditioning (HVAC) systems, which are commonly found in developed countries, particularly in heating dominated climates [1,16,17]. However, a large proportion of world's population lives in developing countries located in tropical regions, where the use of HVAC in buildings is not yet widespread due to economic, technical and/or cultural constraints [18][19][20][21][22][23][24][25][26][27][28][29]. Consequently, these countries have not faced the need for energy policy focused on space conditioning.…”

Section: Introductionmentioning

confidence: 99%

Seasonal Thermal Sensation Vote – An indicator for long-term energy performance of dwellings with no HVAC systems

Cóstola

Carreira

Fernandes

et al. 2019

Energy and Buildings

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Dwellings with no heating, ventilation and air conditioning (HVAC) systems are commonly found in many countries. The long-term thermal performance of these buildings can be assessed based on hourly data of occupant thermal discomfort integrated over the required timespan (e.g. total degree hours of discomfort per year). This approach can be easily applied when simulation is adopted in the assessment, but field studies using this approach are rare as they would require complex, costly and long measurement/survey campaigns. This paper addresses the challenges on conducting field studies on long-term thermal performance of dwellings with no HVAC system by introducing a novel performance indicator: the Seasonal Thermal Sensation Vote (S-TSV). S-TSV adopts the standard 7-point thermal sensation scale and is based on the perceived overall thermal sensation recalled by the user of the building for specific seasons and times of day. The new performance indicator is not intended to replace existing ones, but to complement them in the understanding of the complex thermal performance processes taking place in buildings with no HVAC. S-TSV was applied in a field study targeting a small sample of dwellings in Brazil. Results demonstrate the capabilities of S-TSV to describe trends in buildings performance in this sample. S-TSV also assisted on the identification of relationships between such performance and some independent variables addressed in this field study (e.g. windows operation, footwear and income), considering a threshold of p-values < 0.05 on the chi-square statistic test.

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Development and analysis of a metamodel to represent the thermal behavior of naturally ventilated and artificially air-conditioned residential buildings

Cited by 33 publications

References 15 publications

A Comparative Analysis of the International Regulation of Thermal Properties in Building Envelope

A Comparative Analysis of the International Regulation of Thermal Properties in Building Envelope

Comparing energy efficiency labelling systems in the EU and Brazil: Implications, challenges, barriers and opportunities

Seasonal Thermal Sensation Vote – An indicator for long-term energy performance of dwellings with no HVAC systems

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