The thermal efficacy of double, triple, and quadruple glazing under the extreme heat conditions prevalent in Dubai's climate (A field-based investigation).

Abstract

This study thoroughly investigated the thermal characteristics of three distinct glazing types utilized in Dubai: double glazing (DGU), triple glazing (TGU), and quadruple glazing (QGU). A thermal chamber was constructed employing these three glazing forms, which underwent exposure to the severe summer conditions representative of Dubai. The thermal metrics within the chamber were documented and subsequently compared for analytical purposes. Environmental data loggers were placed inside to monitor air temperature and humidity in three compartments. The objective was to compare thermal performance in (QGU), (TGU), and (DGU) compartments due to U-value differences. The QGU compartment was expected to have a lower temperature, indicating better thermal performance. To establish a benchmark, an independent weather station was used to measure the microclimate at the experimental location, and south orientation was selected for the test. Findings show significant thermal efficiency differences between glazing types, as (QGU) performs exceptionally well, with lower air temperatures compared to (TGU) and (DGU). The findings were provided by the heat index formula and supported by the data that provided better thermal comfort indoors.