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An assessment tool for social housing's thermal performance: considerations on natural ventilation

Grant number: 13/16768-5
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): March 01, 2014
Effective date (End): January 31, 2016
Field of knowledge:Applied Social Sciences - Architecture and Town Planning - Architecture and Urbanism Technology
Principal Investigator:Karin Maria Soares Chvatal
Grantee:Michele Marta Rossi
Host Institution: Instituto de Arquitetura e Urbanismo de São Carlos (IAU). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated scholarship(s):14/09225-8 - Development of regression models as an assessment tool for social housing's thermal performance in early design stages: considerations on natural ventilation, BE.EP.MS


Building thermal performance simulation is generally used for a design's verification in final stages, when the highest gains in cost as well as thermal comfort are achieved in the early stages. Challenges for implementing these tools in such stages reduces the time, resources and expertise knowledge required. Simplified simulation tools are seen as an alternative; however, due to the inaccuracy of results, their use becomes a non viable option. Thus, this research, which is wider[1] and proposes the development of a tool, is comprised of one or more meta-models obtained from parametric simulations with EnergyPlus - a robust and accurate tool that eliminates any uncertainties that might result from simplified algorithms - for the assessment and verification of the thermal performance of social housing still in the early stages of design. This master, specifically, will focus on natural ventilation strategies. The method adopted consists, firstly, in social housing's data collection and the identification of the key parameters to be considered. Also, their respective variation ranges, as they relate to natural ventilation [2], which are relevant in the early stages of a project (from an architectural and thermal comfort standpoint). Therefore, with the aid of simulations using Monte Carlo method, representative samples to be considered in the parametric simulations will be defined. Lastly, by applying regression analysis to the simulations' results, one or more meta-model will be developed, which will be optimized and applied as a tool for standard social housing projects in at least three Brazilian climatic zones. The parameters related to natural ventilation will be varied in order to improve the levels of thermal comfort. [1] This master's degree is linked to a major project that will be submitted to FAPESP by the Supervising Professor for the year 2013, as an Individual Assistance Research. Also bound to the same main project there are two other masters and four professors from North Carolina State University (NCSU).[2] The method presented will be the same for the three masters, each of which is responsible for addressing a specific aspect: (1) natural ventilation (specific emphasis of the Master in question), (2) building systems and (3) a building's solar exposure and shading, and both masters are already ongoing.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ROSSI, MICHELE MARTA; OLIVEIRA FAVRETTO, ANA PAULA; GRASSI, CAMILA; DECAROLIS, JOSEPH; CHO, SOOLYEON; HILL, DAVID; SOARES CHVATAL, KARIN MARIA; RANJITHAN, RANJI. Metamodels to assess the thermal performance of naturally ventilated, low-cost houses in Brazil. ENERGY AND BUILDINGS, v. 204, . (14/09225-8, 13/16628-9, 14/09226-4, 13/16768-5)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
ROSSI, Michele Marta. Regression models to assess the thermal performance of Brazilian low-cost houses: consideration of natural ventilation. 2016. Master's Dissertation - Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) São Carlos.

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