Analysis of the quality solar chimney simulations using EnergyPlus

Natural ventilation is one of the most important strategies for achieving comfort and energy efficiency in hot and humid climates. In this framework, the solar chimneys are devices that promote the increase of air changes in the room and reduction of the energy consumption of buildings. Several auth...

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Hlavní autoři:	Oliveira, Matheus Menezes, Carlo, Joyce Correna
Médium:	Online
Jazyk:	por
Vydáno:	Universidade Estadual de Campinas 2018
On-line přístup:	https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8650284
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spelling	oai:ojs.periodicos.sbu.unicamp.br:article-86502842018-07-11T08:15:53Z Analysis of the quality solar chimney simulations using EnergyPlus Análise da qualidade da simulação do fluxo de ar de chaminés solares com o EnergyPlus Oliveira, Matheus Menezes Carlo, Joyce Correna Solar chimney. Thermal and Energy Simulation. EnergyPlus. Chaminé Solar. Simulação Termoenergética. EnergyPlus. Natural ventilation is one of the most important strategies for achieving comfort and energy efficiency in hot and humid climates. In this framework, the solar chimneys are devices that promote the increase of air changes in the room and reduction of the energy consumption of buildings. Several authors have used energy performance simulations in their studies regarding this issue. However, reference parameters for an annual numerical assessment of the air flow promoted by a solar chimney were not found in the literature. This article presents an investigation of three methods of simulation of solar chimneys in EnergyPlus: model ThermalChimney, Airflow Network, and HorizontalOpenings. The methods were discussed regarding modeling and its restrictions, with the statement of the advantages and disadvantages of each approach. The airflow simulation results were compared to a numerical model developed through CFD in a previous study, validated with measurements in a constructed prototype. Three statistical indicators, to treat the airflow, were used: Mean Absolute Error, Mean Square Error and Mean Differences. The best result was found for the thermal chimney model, with Average Absolute Error between 37% and 52% in comparison to the others, which floated from 65% to 229%. These results fill a gap in the literature by indicating some guidelines for simulation, and in particular, by analyzing indicators for the comparison between air flows resulting from energy performance simulations of solar chimneys with EnergyPlus. A ventilação é uma das principais estratégias para alcançar conforto e eficiência energética em climas quentes e úmidos. Nesse contexto, as chaminés solares são dispositivos que promovem o aumento das trocas de ar no ambiente e redução dos gastos energéticos de um edifício. Vários autores utilizaram simulações termoenergéticas em seus estudos sobre o tema, entretanto, não foram encontrados na literatura parâmetros referenciais para uma avaliação numérica anual dos fluxos de ar de uma chaminé solar. Esse artigo apresenta uma investigação sobre três métodos de simulação de chaminés solares no EnergyPlus: modelo ThermalChimney, Airflow Network e HorizontalOpenings. Os métodos foram discutidos em relação à modelagem e suas restrições, com identificação das vantagens e desvantagens de cada. Os fluxos de ar foram comparados àqueles de um modelo numérico desenvolvido por CFD em estudo anterior que, por sua vez, foi validado com medições em um protótipo construído. Para o tratamento dos fluxos de ar, foram utilizados três indicadores estatísticos, Erro Absoluto Médio, Erro Quadrático Médio e Diferenças Médias, em que o melhor resultado foi encontrado para o método ThermalChimney, cujo Erro Absoluto Médio foi entre 37% e 52% em comparação aos demais, que variaram de 65% a 229%. Estes resultados preenchem uma lacuna na literatura ao indicar algumas diretrizes para simulação e, em especial, por analisar indicadores para a comparação entre fluxos de ar de simulações termoenergéticas de chaminés solares com o EnergyPlus. Universidade Estadual de Campinas 2018-06-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Simulation. Simulação Termoenergética. application/pdf https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8650284 10.20396/parc.v9i2.8650284 PARC Pesquisa em Arquitetura e Construção; Vol. 9 No. 2 (2018); 86-96 PARC Pesquisa em Arquitetura e Construção; Vol. 9 Núm. 2 (2018); 86-96 PARC Pesquisa em Arquitetura e Construção; v. 9 n. 2 (2018); 86-96 1980-6809 por https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8650284/18168 Copyright (c) 2018 PARC Pesquisa em Arquitetura e Construção
institution	Universidade Estadual de Campinas
collection	OJS
language	por
format	Online
author	Oliveira, Matheus Menezes Carlo, Joyce Correna
spellingShingle	Oliveira, Matheus Menezes Carlo, Joyce Correna Analysis of the quality solar chimney simulations using EnergyPlus
author_facet	Oliveira, Matheus Menezes Carlo, Joyce Correna
author_sort	Oliveira, Matheus Menezes
title	Analysis of the quality solar chimney simulations using EnergyPlus
title_short	Analysis of the quality solar chimney simulations using EnergyPlus
title_full	Analysis of the quality solar chimney simulations using EnergyPlus
title_fullStr	Analysis of the quality solar chimney simulations using EnergyPlus
title_full_unstemmed	Analysis of the quality solar chimney simulations using EnergyPlus
title_sort	analysis of the quality solar chimney simulations using energyplus
description	Natural ventilation is one of the most important strategies for achieving comfort and energy efficiency in hot and humid climates. In this framework, the solar chimneys are devices that promote the increase of air changes in the room and reduction of the energy consumption of buildings. Several authors have used energy performance simulations in their studies regarding this issue. However, reference parameters for an annual numerical assessment of the air flow promoted by a solar chimney were not found in the literature. This article presents an investigation of three methods of simulation of solar chimneys in EnergyPlus: model ThermalChimney, Airflow Network, and HorizontalOpenings. The methods were discussed regarding modeling and its restrictions, with the statement of the advantages and disadvantages of each approach. The airflow simulation results were compared to a numerical model developed through CFD in a previous study, validated with measurements in a constructed prototype. Three statistical indicators, to treat the airflow, were used: Mean Absolute Error, Mean Square Error and Mean Differences. The best result was found for the thermal chimney model, with Average Absolute Error between 37% and 52% in comparison to the others, which floated from 65% to 229%. These results fill a gap in the literature by indicating some guidelines for simulation, and in particular, by analyzing indicators for the comparison between air flows resulting from energy performance simulations of solar chimneys with EnergyPlus.
publisher	Universidade Estadual de Campinas
publishDate	2018
url	https://periodicos.sbu.unicamp.br/ojs/index.php/parc/article/view/8650284
work_keys_str_mv	AT oliveiramatheusmenezes analysisofthequalitysolarchimneysimulationsusingenergyplus AT carlojoycecorrena analysisofthequalitysolarchimneysimulationsusingenergyplus AT oliveiramatheusmenezes analisedaqualidadedasimulacaodofluxodeardechaminessolarescomoenergyplus AT carlojoycecorrena analisedaqualidadedasimulacaodofluxodeardechaminessolarescomoenergyplus
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Analysis of the quality solar chimney simulations using EnergyPlus

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