The circulation of air through these spaces occurs by pressure difference and is also favored by the heat pump working in suction: as a result is obtained by inlet air to the heat pump, preheated in winter and preraffre
cascade in the summer, to the advantage of the entire system.
Image is proposed a scheme with external air recirculated through a tunnel: the entrance is guaranteed by the presence of an opening in larkAnd the path to the heat pump ensures preheating / prerafrrescamento, the expulsion takes place directly outside.
The heat pumps ARIS + presenting a flanged connection for the canalization: The channels of supply and extract air and the protective grilles atmospheric must be dimensioned so that the total load losses are compatible with the prevalence of the unit fans.
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