Experimental analysis of natural ventilation of an office building in Mexico city

Fernández-Zayas, José Luis; Villa-Medina, Juan Francisco; Valle, Norberto Chargoy-del; Porta-Gándara, Miguel Ángel

doi:10.1016/j.csite.2021.101661

Cited by 9 publications

(5 citation statements)

References 23 publications

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“…The air flow rate of stack ventilation is significantly affected by the height of the building. The atrium temperature for a building with a height of 200 m is 2°C lower than that of a building with a height of 20 m. 14 However, the height of the building cannot be increased arbitrarily. Ventilation chimney has been proven to be an effective way for enhancing stack ventilation, particularly when the chimney is passively heated by solar energy.…”

Section: Introductionmentioning

confidence: 98%

“…Computational fluid dynamics (CFD) has been widely used to predict the performance of natural ventilation. [12][13][14] Naturally ventilated greenhouse is commonly used in agricultural planting structures. Villagran et al 12 proposed a transient CFD model to simulate the indoor air flow and internal microclimate for different types of greenhouses under natural ventilation.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of photovoltaic-based solar chimney–assisted stack ventilation within a large space hall: A case study

Wei,

Li,

Sun

et al. 2023

Indoor and Built Environment

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Photovoltaic (PV)-based solar chimneys could assist stack ventilation within a large space hall. This study considered a comprehensive office building with a PV-based solar chimney as a case study to explore measures for enhancing stack ventilation. A computational fluid dynamics (CFD) model was established, and the influences of the inner heat source, chimney inlet position, solar heat gain and photovoltaic (PV) arrangement on the ventilation rate were investigated. The results revealed that PV-based solar chimneys could assist stack ventilation and would effectively provide a suitable indoor environment for occupied areas during the transitional season. Raising the chimney inlet position is conducive to improving the ventilation rate and cooling performance. The increase in the inlet position from a height of 0.2 m to 3.8 m would increase the ventilation rate up to 5%. The heat gain from the PV backside is an important method of enhancing the ventilation rate. A 200 W/m2 heat gain can lead to a 16.4% increase in ventilation. Moreover, the lower the heat source location, the higher the ventilation efficiency. This study provides basic strategies for optimising design schemes to improve natural ventilation efficiency.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Evaluation of photovoltaic-based solar chimney–assisted stack ventilation within a large space hall: A case study

Wei,

Li,

Sun

et al. 2023

Indoor and Built Environment

View full text Add to dashboard Cite

show abstract

“…Practically, all new office buildings and most new apartment buildings are generally provided with mechanical ventilation. Natural ventilation is rarely used in new buildings because of additional specific building requirements, for example, specific window positions [3,4]. However, natural ventilation can be found in old buildings, and it can remain after building reconstruction due to the inability to install mechanical ventilation.…”

Section: Introductionmentioning

confidence: 99%

HVAC System Control Solutions Based on Modern IT Technologies: A Review Article

2022

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As energy consumption for building engineering systems is a major part of the total energy spent, it is necessary to reduce it. This leads to the need for the development of new solutions for the control of heating, ventilation, and conditioning (HVAC) systems that are responsive to humans and their demands. In this review article, the existing research and technology advancements of the modern technologies of computer vision and neural networks for application in HVAC control systems are studied. Objectives such as human detection and location, human activity monitoring, skin temperature detection, and clothing level detection systems are important for the operation of precise, high-tech HVAC systems. This article tries to compile the latest achievements and principal solutions on how this information is acquired. Moreover, it how parameters such as indoor air quality (IAQ), variable air volume ventilation, computer vision, metabolic rate, and human clothing isolation can affect final energy consumption is studied. The research studies discussed in this review article have been tested in real application scenarios and prove the benefits of using a particular technology in ventilation systems. As a result, the modernized control systems have shown advantages over the currently applied typical non-automated systems by providing higher IAQ and reducing unnecessary energy consumption.

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“…In this situation we can speak of natural ventilation [6][7][8][9][10][11][12][13][14]. José Luis Fernàndez-Zayas et al [15] have performed an experimental analysis of natural ventilation of an office building in Mexico city.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Pressure Generated by a Linear Heat Source in a Semi–ventilated Enclosure

Anicet¹,

Béatrice²,

Pierre³

2022

EAS

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The objective of this work is to understand and successfully control the phenomena found at the openings when the enclosure is subjected to a linear heat source. The enclosure is not adiabatic. The control and understanding of its phenomena will be carried out by differential static pressure measurements. These measurements were carried out in calm weather using a Furness control micro-manometer in 20 points at positions x+ = 0, y+ = -0.5 and along the vertical z+. We have studied four enclosure configurations. Each configuration has two or four or six openings. The openings have identical characteristics, height h = 34 mm and width l = 210 mm. The height of the enclosure is H = 520 mm and the length is equal to the width L = l = 210 mm. We have shown the influences of the reduced Grashof number (Gr*), the number and the position of the openings on the differential static pressure with and without dimension and compared the experimental results obtained with those of cases 11 and 12 of Koueni Toko (2019). It appears that the values and forms of the static pressure and the values of the neutral height can vary according to Gr* and number and the position of the openings.

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Experimental analysis of natural ventilation of an office building in Mexico city

Cited by 9 publications

References 23 publications

Evaluation of photovoltaic-based solar chimney–assisted stack ventilation within a large space hall: A case study

Evaluation of photovoltaic-based solar chimney–assisted stack ventilation within a large space hall: A case study

HVAC System Control Solutions Based on Modern IT Technologies: A Review Article

Experimental Study of the Pressure Generated by a Linear Heat Source in a Semi–ventilated Enclosure

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