Application of double glazed façades with horizontal and vertical louvers to increase natural air flow in office buildings

Pourshab, Nasrin; Tehrani, Mehdi Dadkhah; Toghraie, Davood; Rostami, Sara

doi:10.1016/j.energy.2020.117486

Cited by 52 publications

(16 citation statements)

References 35 publications

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“…Panašiam veikimo principui į vėjo bokštus priskiriami dvigubi fasadai (Pourshab et al, 2020). Naudojant tokius sprendimus sukuriamas skersvėjis, kurio Vėjo srautas pagrindinė varomoji jėga yra vėjas bei gravitacija.…”

Section: Pasyvios Natūralaus Vėdinimo Technologijosunclassified

“…1.3 pav. Vėjo bokšto ir dvigubo fasado veikimo principų palyginimas: a) vėjo bokštas ; b) dvigubas fasadas (Pourshab et al, 2020) Fig. 1.3.…”

Section: Pasyvios Natūralaus Vėdinimo Technologijosunclassified

“…1.3. Comparison of the operation principle of wind tower and the double-skin facade: a) wind tower ; b) double-skin facade (Pourshab et al, 2020) Kitas įrenginys turintis panašumų į anksčiau minėtas vėdinimo technologijas -vėjo gaudyklė (angl. windcatcher).…”

Section: Pasyvios Natūralaus Vėdinimo Technologijosunclassified

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Vėjo energiją naudojančio turbininio ventiliatoriaus termodinaminis modelis

Rimdžius¹

2021

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Vadovas prof. habil. dr. Vytautas MARTINAITIS (Vilniaus Gedimino technikos universitetas, mechanikos inžinerija -T 009). Vilniaus Gedimino technikos universiteto Mechanikos inžinerijos mokslo krypties disertacijos gynimo taryba: Pirmininkas doc. dr. Artūras KILIKEVIČIUS (Vilniaus Gedimino technikos universitetas, mechanikos inžinerija -T 009). Nariai: prof. habil. dr. Rimantas KAČIANAUSKAS (Vilniaus Gedimino technikos universitetas, mechanikos inžinerija -T 009), dr. Fernando MARQUES DA SILVA (Nacionalinė civilinės inžinerijos laboratorija, Portugalija, mechanikos inžinerija -T 009), dr. Raimondas PABARČIUS (Lietuvos energetikos institutas, energetika ir termoinžinerija -T 006), doc. dr. Kęstutis VALANČIUS (Vilniaus Gedimino technikos universitetas, mechanikos inžinerija -T 009). Disertacija bus ginama viešame Mechanikos inžinerijos mokslo krypties disertacijos gynimo tarybos posėdyje 2021 m. balandžio 27 d. 10 val. Vilniaus Gedimino technikos universiteto senato posėdžių salėje.

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Section: Pasyvios Natūralaus Vėdinimo Technologijosunclassified

“…1.3 pav. Vėjo bokšto ir dvigubo fasado veikimo principų palyginimas: a) vėjo bokštas ; b) dvigubas fasadas (Pourshab et al, 2020) Fig. 1.3.…”

Section: Pasyvios Natūralaus Vėdinimo Technologijosunclassified

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Vėjo energiją naudojančio turbininio ventiliatoriaus termodinaminis modelis

Rimdžius¹

2021

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“…Numerous studies have been performed to analyze various aspects of louvers. 7,24,[32][33][34][35][36][37][38][39] Some of them focused on the use of louvers as shading devices to control daylight 39 and heat gain, 37 on the increasing natural airflow in the double-glazed façades, 38 and on the performance of the windcatcher. 7 Liu et al 7 carried out CFD simulations to evaluate the effect of the length and the number of layers of louvers in the inlet, on the performance of the wind-catcher.…”

Section: Introductionmentioning

confidence: 99%

Louver and window position effect on cross-ventilation in a generic isolated building: A CFD approach

Yazarlou

Barzkar

2022

Indoor and Built Environment

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Natural ventilation has been used to increase indoor air quality, remove pollutants, and remove heat absorbed in the building structure. Some architectural features such as wind-catcher systems are used to induce airflow into buildings, and openings equipped with louvers are employed to reduce solar daylight while allowing natural ventilation. Earlier studies on ventilated louvers and wind-catchers have shown the impact of the louvers’ opening positions and slat angles. However, their combination with each other has been less studied. This paper presents CFD simulations of cross-ventilation in a generic isolated building integrated with a one-sided roof-top wind-catcher and the outlet opening, both equipped with louvers for three different window opening positions. The isothermal 3D steady RANS equations were solved with the Standard k- ε method. The CFD simulations with CFX software were validated with the wind-tunnel experiments. The results show that the lowest dimensionless wind velocities inside the building were observed for the arrangement “Down” for both cases with and without louvers. In contrast, the highest air exchange efficiency and dimensionless wind velocities inside the building were measured for the arrangement “Up” for the case with louvers. This research can be considered as an architectural strategy to improve indoor natural cross-ventilation.

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“…They carried out a high-resolution simulation to compute convective heat transfer rates and Nusselt number. Pourshab et al [34] applied horizontal and vertical louvres for an office building system in their natural ventilation studies. Numerical simulations were carried out for hot and arid climatic conditions and designed the building for optimum ventilation by reinforcing the natural airflow between the floors.…”

Section: Introductionmentioning

confidence: 99%

Natural ventilation in a lege space with heat source: CFD visualization and taguchi optimization

CHANDRA¹,

REDDY²,

Harish

2022

Journal of Thermal Engineering

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Louvre-equipped generic enclosed (LEGE) space with heat source and guiding vents is commonly seen in many buildings, heat transfer equipment and has plenty of practical applications. In the current work, natural wind- driven convection in a LEGE space system with a mono-centric heat source under five louvre configurations and different wind speeds are analyzed. The system walls are assumed adiabatic, and a heat source is introduced at the centre with five different levels of heating in the range of 100 and 400 W/m2. The system is placed in an ample rectangular space to generate natural wind flow conditions. The efforts of conducting several experiments are reduced by applying Taguchi method and Anova is used to rank the experiments based on the responses from CFD simulations. Firstly 3D steady RANS equations are solved using the Finite volume approach where RNG k-ω the model was chosen for turbulence modelling. The Nusselt number and temperature of the heat source were noted down as responses for each case. Secondly, the percentage contribution of different factors on the temperature of heat source and optimum experiment were explored using ANOVA technique. The results are reported in contours and velocity vectors inside the enclosure, disclosing the heat flow and air circulation under different design configurations. Results show that louvres position had a maximum of 5 percent effect on the responses than other factors. From the ANOVA method, results show that the contribution of air velocity is around 80%.

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Application of double glazed façades with horizontal and vertical louvers to increase natural air flow in office buildings

Cited by 52 publications

References 35 publications

Vėjo energiją naudojančio turbininio ventiliatoriaus termodinaminis modelis

Vėjo energiją naudojančio turbininio ventiliatoriaus termodinaminis modelis

Louver and window position effect on cross-ventilation in a generic isolated building: A CFD approach

Natural ventilation in a lege space with heat source: CFD visualization and taguchi optimization

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