Sustainable Increase in Thermal Resistance of Window Construction: Experimental Verification and CFD Modelling of the Air Cavity Created by a Shutter
Borys Basok, Volodymyr Novikov, Anatoliy Pavlenko, Hanna Koshlak, Svitlana Goncharuk, Oleksii Shmatok, Dmytro Davydenko
TL;DR
Adding window shutters increases thermal resistance of windows, improving building energy efficiency through reduced heat transfer.
Contribution
Demonstrates that shutters can boost thermal resistance of windows by 2-2.5 times using experimental and CFD methods.
Findings
Shutters added an air layer that significantly reduced heat transfer in double-glazed windows.
Simulation results showed thermal resistance increased 2 to 2.5 times with shutters.
Findings support using shutters to improve building energy performance and sustainability.
Abstract
This study investigates, both experimentally and theoretically, the impact of incorporating window shutters on the thermal resistance of double-glazed window units, employing computational fluid dynamics (CFD) modelling. The integration of shutters, whether installed internally or externally, introduces an additional air layer that significantly influences heat transfer between indoor and outdoor environments. This effect on the thermal performance of the transparent structure was analysed through experimental measurements under real operating conditions and numerical simulations involving fluid dynamics and energy equations for the air gaps, alongside heat conduction equations for the solid components. Fourth-kind boundary conditions, considering both radiative and conductive components of the total heat flux emanating from the building’s interior, were applied at the solid–gas…
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Taxonomy
TopicsBuilding Energy and Comfort Optimization · Wind and Air Flow Studies · Solar Energy Systems and Technologies