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Open AccessArticle

Development of a Double Skin Facade System Applied in a Virtual Occupied Chamber

1
Faculdade de Ciências e Tecnologia–Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
2
CINTAL, Campus de Gambelas, 8005-139 Faro, Portugal
3
School of Construction Management & Engineering, University of Reading, Reading RG6 6AW, UK
*
Author to whom correspondence should be addressed.
Academic Editor: Ping-Hei Chen
Inventions 2021, 6(1), 17; https://doi.org/10.3390/inventions6010017
Received: 21 December 2020 / Revised: 24 February 2021 / Accepted: 26 February 2021 / Published: 4 March 2021
(This article belongs to the Special Issue Heat transfer and Thermal Managements of Innovative Systems)
In this study a system constituted by seven double skin facades (DSF), three equipped with venetian blinds and four not equipped with venetian blinds, applied in a virtual chamber, is developed. The project will be carried out in winter conditions, using a numerical model, in transient conditions, and based on energy and mass balance linear integral equations. The energy balance linear integral equations are used to calculate the air temperature inside the DSF and the virtual chamber, the temperature on the venetian blind, the temperature on the inner and outer glass, and the temperature distribution in the surrounding structure of the DSF and virtual chamber. These equations consider the convection, conduction, and radiation phenomena. The heat transfer by convection is calculated by natural, forced, and mixed convection, with dimensionless coefficients. In the radiative exchanges, the incident solar radiation, the absorbed solar radiation, and the transmitted solar radiation are considered. The mass balance linear integral equations are used to calculate the water mass concentration and the contaminants mass concentration. These equations consider the convection and the diffusion phenomena. In this numerical work seven cases studies and three occupation levels are simulated. In each case the influence of the ventilation airflow and the occupation level is analyzed. The total number of thermal and indoor air quality uncomfortable hours are used to evaluate the DSF performance. In accordance with the obtained results, in general, the indoor air quality is acceptable; however, when the number of occupants in the virtual chamber increases, the Predicted Mean Vote index value increases. When the airflow rate increases the total of Uncomfortable Hours decreases and, after a certain value of the airflow rate, it increases. The airflow rate associated with the minimum value of total Uncomfortable Hours increases when the number of occupants increases. The energy production decreases when the airflow increases and the production of energy is higher in DSF with venetian blinds system than in DSF without venetian blinds system. View Full-Text
Keywords: double skin facade; virtual chamber; numerical simulation; thermal comfort; indoor air quality double skin facade; virtual chamber; numerical simulation; thermal comfort; indoor air quality
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MDPI and ACS Style

Conceição, E.; Gomes, J.; Lúcio, M.M.; Awbi, H. Development of a Double Skin Facade System Applied in a Virtual Occupied Chamber. Inventions 2021, 6, 17. https://doi.org/10.3390/inventions6010017

AMA Style

Conceição E, Gomes J, Lúcio MM, Awbi H. Development of a Double Skin Facade System Applied in a Virtual Occupied Chamber. Inventions. 2021; 6(1):17. https://doi.org/10.3390/inventions6010017

Chicago/Turabian Style

Conceição, Eusébio; Gomes, João; Lúcio, Maria M.; Awbi, Hazim. 2021. "Development of a Double Skin Facade System Applied in a Virtual Occupied Chamber" Inventions 6, no. 1: 17. https://doi.org/10.3390/inventions6010017

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