Abbaas, Esra’a Shehadeh Hussein
(2023)
Impact Of Shading Devices On The
Thermal Performance Of Residential
Building In Amman, Jordan.
PhD thesis, Universiti Sains Malaysia.
Abstract
Cooling strategies during hot-dry summer in Amman, Jordan, consume a hefty
amount of annual electrical energy. Exploiting natural sources to achieve a thermal
comfort indoor environment in residential buildings would be a good practice. This
work investigates the influence of external window shading devices configurations on
the thermal performance and thermal comfort of three residential building forms,
namely rectangular, L-shape, and U-shape, in Amman. The research starts with site
measurements to validate the simulation data. For the simulation study the buildings’
models are designed using the SketchUp plugin OpenStudio and then plugged into the
EnergyPlus simulator. The thermal performance of buildings is studied using indoor
air temperature, mean radiant temperature, air speed, and relative humidity. The
thermal comfort is evaluated according to ASHRAE-55 adaptive model and Fanger’s
models. This study investigates the vertical, horizontal, and combined shading types
of external window shadings at different lengths. It is found that the combination
between vertical and horizontal shading of 1.25 m length has the best performance in
minimizing indoor air temperature, and the vertical fins shading has minimal impact.
In case of windows open with such strategies, the indoor air temperature is notably
dropped up to 8.85 °C in the daytime and 12.04 °C at nighttime, which improves the
thermal performance of all building forms. Combining shading and natural ventilation
improves thermal comfort in all building forms, where the indoor thermal sensation
shifts from hot, warm, and slightly warm to slightly warm, neutral, and comfortable,
respectively.
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