Inlet extensions for wind towers to improve natural ventilation in buildings

Varela-Boydo, C.A.; Moya, Sara L.

doi:10.1016/j.scs.2019.101933

Cited by 26 publications

(10 citation statements)

References 19 publications

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“…This method is very useful for analyzing vernacular architecture in general, since it allows for the discovery of the logic of its morphological features and its links with its environmental circumstances. This would be the case of the research work developed by Varela Boydo and Moya [83]. It would allow us to identify which characteristics of the traditional windcatchers respond to cultural features and which ones are related to their adaptation to the proper circumstances of each geographical and climatic zone.…”

Section: Statistical Links Between the Resultsmentioning

confidence: 99%

The Sedentary Process and the Evolution of Energy Consumption in Eight Native American Dwellings: Analyzing Sustainability in Traditional Architecture

et al. 2020

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According to the research developed by André Leroi-Gourhan in 1964, entitled “Gesture and speech”, the evolution of human beings during Prehistory was linked to the search for work efficiency. As time passed, man designed increasingly complex tools whose production implied a decreasing amount of energy. The aim of the present research was to determine if this evolution, which occurred in parallel to the sedentary process, also affected architecture, specifically if it can be detected on traditional dwellings, particularly in those built by the Native American Indians during the pre-Columbian period. Due to their great diversity, since both nomad and sedentary models can be found among them, and to the available information about their morphology and technical characteristics, these models offer a unique opportunity to study the consequences of this process for architecture. In order to achieve it, an alternative parameter that can be determined for any type of building was designed. It allows us to establish the amount of energy an envelope is equal to. The results obtained suggest that the efficiency of the dwellings decreased as this process went forward, but this pattern changed in its last step, when agriculture appeared and permanent settlements started to be built. Besides, statistical graphs were used in order to show graphically the relationship between it, the climate, the morphology of the dwellings and their technical characteristics.

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Section: Statistical Links Between the Resultsmentioning

confidence: 99%

The Sedentary Process and the Evolution of Energy Consumption in Eight Native American Dwellings: Analyzing Sustainability in Traditional Architecture

et al. 2020

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“…By simulating ten different lengths of wing walls, they found which configuration performs the best [25]. Also trying to improve performance in windcatchers, some of the authors of the present work published the use of inlet extension for the wind towers [26]. During wind tunnel testing and preliminary CFD simulations, it was found that almost half of the air inside the inlet openings of the wind towers formed an ascending current.…”

Section: Introductionmentioning

confidence: 88%

“…One of them studies the use of funnels attached to increase the opening area. Another [26], proposes the use of inlet extensions to boots induction. A fourth one studies catchers capable of redirecting to always face the wind.…”

Section: Introductionmentioning

confidence: 99%

Analysis of traditional windcatchers and the effects produced by changing the size, shape, and position of the outlet opening

Varela-Boydo

Moya

Watkins

2021

Journal of Building Engineering

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“…The results showed that wind‐catcher was able to reduce inside house temperature by 3.2°C. Varela‐Boydo and Moya 22 highlighted the importance of wind‐catcher inlet compared to the outlet position. Dehghani et al 23 conducted a numerical and experimental investigation on four‐sided wind‐catcher performance.…”

Section: Related Studiesmentioning

confidence: 99%

New passive thermal comfort system using three renewable energies: Wind catcher, solar chimney and earth to air heat exchanger integrated to real‐scale test room in arid region (Experimental study)

et al. 2020

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Summary Thermal comfort is one of the ancient‐new challenges of the arid region population and responsible for more than 40% of energy end‐use. Renewable energy can be a solution to this problem. In the present paper, the potential of renewable energies to ameliorate thermal comfort and reducing energy consumption in building sectors is experimentally investigated. Three renewable‐based applications are used: wind‐catcher (WC), solar chimney (SC), and earth to air heat exchanger (EAHE). The three techniques are connected to a real‐scale test room and investigated using in‐situ measurement. The contribution of each technique is discussed separately. Temperature, humidity sensors, and anemometer are used to study parameters affecting thermal comfort. Obtained results show that the use of wind‐catcher could provide in the presence of wind an internal airflow of 3.8 m.s−1 which reduces inside room temperature by 6°C. A solar chimney creates a difference between its inlet and outlet air temperature by 5.9°C and increases the kinetic energy of hot air leaving the solar chimney which is replaced by cool air from outside and other devices outlet (EAHE and WC) and increases internal airflow even with the absence of winds. The earth to air heat exchanger increases the outlet air temperature in winter by 8°C and reduces it by 12°C in summer. Inside test room hygrometry is also ameliorated by the use of EAHE. Analyzing the new system (test room + WC + SC + EAHE) shows an important amelioration of inside thermal comfort. A difference between inside and outside test room temperature is found: reduction of 13°C in summer, and a gain of 10°C in winter. The new system leads to better inside test room thermal comfort conditions and to reduce energy consumption by almost 50%. The present study presents the first experimental investigation of using three renewable energies in the same building to improve thermal comfort. Using real scale room and in‐situ measurement gives a realistic idea and results show that green energy could improve the thermal situation and energy saving. This is an original work to motivate building designers, especially in the arid region to use more than one renewable energy to ameliorate thermal comfort in both summer and winter seasons.

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Inlet extensions for wind towers to improve natural ventilation in buildings

Cited by 26 publications

References 19 publications

The Sedentary Process and the Evolution of Energy Consumption in Eight Native American Dwellings: Analyzing Sustainability in Traditional Architecture

The Sedentary Process and the Evolution of Energy Consumption in Eight Native American Dwellings: Analyzing Sustainability in Traditional Architecture

Analysis of traditional windcatchers and the effects produced by changing the size, shape, and position of the outlet opening

New passive thermal comfort system using three renewable energies: Wind catcher, solar chimney and earth to air heat exchanger integrated to real‐scale test room in arid region (Experimental study)

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