| 摘要 |
An indoor space is externally enclosed and thermally insulated by an underfloor insulating layer, a wall insulating layer and a ceiling insulating layer. An underfloor ventilation layer is defined between a floor and the underfloor insulating layer, and a ceiling ventilation layer is formed between a ceiling and the ceiling insulating layer. Communication is established through the underfloor ventilation layer, the indoor space and the ceiling ventilation layer, via floor vents and ceiling vents. Outdoor air is drawn into the indoor space from an air intake. Air is expelled from the ceiling ventilation layer into an underroof space by ventilation fans and then discharged outdoors from underroof outlets. A heat exchange ventilator is disposed in the ceiling ventilation layer, whereby heat exchange takes place between air in the ceiling ventilation layer and incoming fresh outdoor air. After the heat exchange, the incoming air is delivered into the underfloor ventilation layer.
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