Impact of densification and solar orientation of urban canyons on energy demand for air-conditioning under desert climatic conditions

Impact of densification and solar orientation of urban canyons on energy demand for air-conditioning under desert climatic conditions

The purpose of this study was to analyze the effect of urban shape on the energy used for air-conditioning in buildings, in order to ensure indoor comfort during summer. The method considers energy consumption calculations for a massive, two-storied building, located at Sede Boqer (latitude 30° 52&#...

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Autor principal: Krüger, Eduardo Leite
Formato: Online
Idioma:por
Publicado em: ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2008
Acesso em linha:https://seer.ufrgs.br/ambienteconstruido/article/view/3799
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spelling ojs-article-37992008-11-22T00:51:57Z Impact of densification and solar orientation of urban canyons on energy demand for air-conditioning under desert climatic conditions Impacto do adensamento e da orientação solar de cânions urbanos na demanda por condicionamento térmico de edificações sob condições de clima desértico Krüger, Eduardo Leite Adensamento urbano; Cânions urbanos; Simulação termoenergética; Monitoramento térmico; Climatologia urbana The purpose of this study was to analyze the effect of urban shape on the energy used for air-conditioning in buildings, in order to ensure indoor comfort during summer. The method considers energy consumption calculations for a massive, two-storied building, located at Sede Boqer (latitude 30° 52' 0N, longitude 34° 46' 60E, and altitude 480 m above sea level), campus of the Ben-Gurion University of the Negev, Israel. Thermal simulations for different urban canyon configurations were applied. The two-storied building was monitored from January until the end of August 2006, and the monitoring results were used for calibrating a simulation model with the software Indoor Climate and Energy (IDA). As part of the input data, Canyon Air Temperature model (CAT) was used for predicting local canyon temperatures for different street canyons. Predicted and measured temperatures at a street canyon in Sede Boqer were compared, calibrating CAT for summer conditions. Finally, after calibrating the IDA simulation model and the CAT model, the following canyon configurations were considered for analysis: NS and EW street axis orientations; street axis perpendicular (PERP) and parallel (PARAL) to prevailing wind direction, and aspect ratios (H/W) of 0.33, 0.66, 1 and 2. Results provide possible guidelines for the geometric definition of urban canyons and the management of a high thermal mass building under desert conditions. O objetivo deste artigo é analisar o efeito da forma urbana no consumo de energia para condicionamento térmico de edificações, de modo a assegurar conforto sob condições de verão. O método considera cálculos de consumo energético para uma edificação de dois pisos com grande massa térmica, localizada em Sede Boqer (latitude 30°52'0N, longitude 34°46'60E e altitude de 480 m acima do nível do mar), Campus da Ben-Gurion University of the Negev, Israel, simulando-a para diferentes condições de cânion urbano. Tal edificação foi monitorada durante os meses de janeiro a agosto de 2006, servindo os dados monitorados como base para a calibração de um modelo de simulação com o software IDA Indoor Climate and Energy. Como parte dos dados de entrada do software de simulação, adotou-se a ferramenta de modelagem de clima urbano Canyon Air Temperature (CAT), de modo a se obterem temperaturas locais para as diversas situações de cânion urbano analisadas. Para a aplicação da ferramenta CAT, compararam-se as predições desse modelo com dados medidos em um cânion urbano em Sede Boqer, calibrando-se CAT para as condições de verão. Após a calibração do modelo de simulação e do modelo preditivo de temperaturas de ar no cânion, assumiram-se as configurações de análise: eixos de rua norte-sul (NS), leste-oeste (EW), perpendicular (PERP) e paralelo (PARAL) ao vento dominante, para as relações entre altura de prédio (H) e espaçamento entre prédios (W) H/W de 0,33, 0,66, 1 e 2. Os resultados obtidos oferecem recomendações gerais quanto à disposição geométrica de cânions urbanos e quanto ao gerenciamento de uma edificação de grande massa térmica, sob condições desérticas. ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2008-04-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.ufrgs.br/ambienteconstruido/article/view/3799 Ambiente Construído; v. 8, n. 1 (2008); 65-87 Ambiente Construído; v. 8, n. 1 (2008); 65-87 Ambiente Construído; v. 8, n. 1 (2008); 65-87 1678-8621 1415-8876 por https://seer.ufrgs.br/ambienteconstruido/article/view/3799/2178 Direitos autorais 2016 Ambiente Construído https://creativecommons.org/licenses/by/4.0
institution Universidade Federal do Rio Grande do Sul
collection OJS
language por
format Online
author Krüger, Eduardo Leite
spellingShingle Krüger, Eduardo Leite
Impact of densification and solar orientation of urban canyons on energy demand for air-conditioning under desert climatic conditions
author_facet Krüger, Eduardo Leite
author_sort Krüger, Eduardo Leite
title Impact of densification and solar orientation of urban canyons on energy demand for air-conditioning under desert climatic conditions
title_short Impact of densification and solar orientation of urban canyons on energy demand for air-conditioning under desert climatic conditions
title_full Impact of densification and solar orientation of urban canyons on energy demand for air-conditioning under desert climatic conditions
title_fullStr Impact of densification and solar orientation of urban canyons on energy demand for air-conditioning under desert climatic conditions
title_full_unstemmed Impact of densification and solar orientation of urban canyons on energy demand for air-conditioning under desert climatic conditions
title_sort impact of densification and solar orientation of urban canyons on energy demand for air-conditioning under desert climatic conditions
description The purpose of this study was to analyze the effect of urban shape on the energy used for air-conditioning in buildings, in order to ensure indoor comfort during summer. The method considers energy consumption calculations for a massive, two-storied building, located at Sede Boqer (latitude 30° 52' 0N, longitude 34° 46' 60E, and altitude 480 m above sea level), campus of the Ben-Gurion University of the Negev, Israel. Thermal simulations for different urban canyon configurations were applied. The two-storied building was monitored from January until the end of August 2006, and the monitoring results were used for calibrating a simulation model with the software Indoor Climate and Energy (IDA). As part of the input data, Canyon Air Temperature model (CAT) was used for predicting local canyon temperatures for different street canyons. Predicted and measured temperatures at a street canyon in Sede Boqer were compared, calibrating CAT for summer conditions. Finally, after calibrating the IDA simulation model and the CAT model, the following canyon configurations were considered for analysis: NS and EW street axis orientations; street axis perpendicular (PERP) and parallel (PARAL) to prevailing wind direction, and aspect ratios (H/W) of 0.33, 0.66, 1 and 2. Results provide possible guidelines for the geometric definition of urban canyons and the management of a high thermal mass building under desert conditions.
publisher ANTAC - Associação Nacional de Tecnologia do Ambiente Construído
publishDate 2008
url https://seer.ufrgs.br/ambienteconstruido/article/view/3799
work_keys_str_mv AT krugereduardoleite impactofdensificationandsolarorientationofurbancanyonsonenergydemandforairconditioningunderdesertclimaticconditions
AT krugereduardoleite impactodoadensamentoedaorientacaosolardecanionsurbanosnademandaporcondicionamentotermicodeedificacoessobcondicoesdeclimadesertico
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