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Exhaust air insulation building envelope can recover and utilize the low-grade energy inherent in the exhaust air to prevent the heat transfer through the building envelope. The study investigates a triple glazed exhaust-air window (TGEW), which can switch its operation mode between the cooling and heating season. A two-dimensional numerical model was proposed to analyze the conjugated heat transfer...
A concept of exhaust air insulation (EAI) is proposed for application in cooling dominated buildings. The EAI wall in basic form is composed mainly of an air-permeable porous material layer, a ventilated cavity, and an external protection structure. The excessive indoor air pressure or mechanical ventilation forces the exhaust air from the conditioned space to flow through the porous layer firstly,...
Switchable exhaust air (SEA) window consists of three glass panes, two air cavities, and built-in venetian blinds. Such a triple glazed window allows the exhaust air from conditioned room to be ventilated through the cavity between the glass panes to ambient. Part of the heat/coolth inherent in the outgoing exhaust air is able to remove the heat loss/gain through the window. An unsteady state numerical...
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