Métodos de avaliação bioclimática

E. KrügerE. KrügerPPGEC/UTFPRPPGEC/UTFPR

Métodos adotados na primeira Métodos adotados na primeira versão do Zoneamento versão do Zoneamento Bioclimático BrasileiroBioclimático Brasileiro

• Tabelas de Mahoney

• Diagrama Bioclimático de Givoni

Tabelas de MahoneyTabelas de Mahoney

Método criado na década de 1970 por Carl Mahoney (AA School, London) para desenho bioclimático

• Etapa inicial: obter dados climáticos locais• Anotação dos dados em planilhas (Tabelas de

Mahoney)• Geração de recomendações gerais para projeto

Obs: método relativamente simples e que demanda pouco tempo para ser utilizado

Tabelas de MahoneyTabelas de Mahoney

Wikipedia:

The tables use readily available climate data and simple calculations to give design guidelines, in a manner similar to a spreadsheet, as opposed to detailed thermal analysis or simulation. There are six tables; four are used for entering climatic data, for comparison with the requirements for thermal comfort; and two for reading off appropriate design criteria. A rough outline of the table usage is:

Air Temperatures. The max, min, and mean temperatures for each month are entered into this table. Humidity, Precipitation, and Wind. The max, min, and mean figures for each month are entered into this

table, and the conditions for each month classified into a humidity group. Comparison of Comfort Conditions and Climate. The desired max/min temperatures are entered, and

compared to the climatic values from table 1. A note is made if the conditions create heat stress or cold stress (i.e. the building will be too hot or cold).

Indicators (of humid or arid conditions). Rules are provided for combining the stress (table 3) and humidity groups (table 2) to check a box classifying the humidity and aridity for each month. For each of six possible indicators, the number of months where that indicator was checked are added up, giving a yearly total.

Schematic Design Recommendations. The yearly totals in table 4 correspond to rows in this table, listing schematic design recommendations, e.g. 'buildings oriented on east-west axis to reduce sun exposure', 'medium sized openings, 20%-40% of wall area'.

Design Development Recommendations. Again the yearly totals from table 4 are used to read off recommendations, e.g. 'roofs should be high-mass and well insulated'.

Tabelas de MahoneyTabelas de Mahoney

Adaptadas por M Roriz 1987

Carta de Givoni Carta de Givoni Ano Climático (TRY e Normais Climatológicas)Ano Climático (TRY e Normais Climatológicas)

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T B S [ ° C ]

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Dados do TRY sobre carta psicrométrica (diagrama bioclimático) – software Analysis Bio

Ano Climático (TRY e Normais Climatológicas)Ano Climático (TRY e Normais Climatológicas)

Dados das Normais Climatológicas sobre carta psicrométrica (diagrama bioclimático)

Fonte INMET para download de Normais Climatológicas: http://www.inmet.gov.br/