Thermal performance assessment of opaque ventilated façades for residential buildings in hot humid climates
| Autor: | Gökşen, Fulya, Ayçam, İdil |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Građevinar Volume 75 Issue 03. |
| ISSN: | 1333-9095 0350-2465 |
| Popis: | U ovom je radu pomoću računalne dinamike fluida (engl. computational fluid dynamics - CFD) ispitana toplinska učinkovitost neprozirnih ventiliranih fasada (engl. opaque ventilated façades - OVF) u mediteranskoj klimatskoj zoni u kojoj je pasivno hlađenje prioritet. Simulacije su provedene kako bi se analiziralo ponašanje komponenti OVF-a pod različitim geometrijskim konfiguracijama, primjenjujući vremenske podatke za tri grada u Turskoj koji predstavljaju klimatske uvjete regije prvog stupnja-dana. Ovi podaci uključuju debljinu zračne šupljine, veličinu odvoda i visinu zračne šupljine. Za razliku od dosadašnje literature, dvosmjerna odvodna ventilacija se u ovom istraživanju primjenjuje u analizi različitih fasadnih sustava za područje mediteranske klime te se utvrđuje njezina učinkovitost u smanjenju solarnog prinosa. Prema uzorcima ispitanima u okviru ovdje navedenih kriterija, utvrđeno je da se stopa prijenosa topline u zatvorenom prostoru kroz fasadu može smanjiti za 69 % do 75 %. In this paper, the thermal performance of opaque ventilated façades (OVFs) in the Mediterranean climate zone, where passive cooling is a priority, was examined using computational fluid dynamics (CFD). Simulations were carried out to analyse the behaviour of OVF components under different geometric configurations, using weather data for three cities in Turkey that reflect the climatic conditions of a first-degree day region. These data include the air cavity thickness, outlet size, and air cavity height. Unlike in previous literature, two-way outlet ventilation is employed in this study in the analysis of different façade systems for the Mediterranean climate region, and its performance in reducing solar gain is determined. According to the samples examined within the scope of the criteria outlined herein, it was determined that the rate of heat transferred indoors through the façade can be reduced within the range of 69 % to 75 %. |
| Databáze: | OpenAIRE |
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