Abstract
In cold countries, a large difference between the indoor and outdoor temperatures (30–60 °C) in winter leads to (a) huge heat losses through a ventilation system, (b) moisture freezing at the systems exit, and (c) great reduction in the indoor humidity and uncomfortable living/working conditions. Therefore, new reliable and efficient solutions are strictly necessary to realize the concept of low (or even zero)-energy building in such climates. This Chapter addresses a new approach (the so-called VENTIREG) recently suggested specifically for cold climates to resolve the mentioned problems. New VENTIREG heat and mass exchangers, developed to realize this method, were tested under climatic conditions of the Western Siberia, Russia. The prototype systems require little maintenance, have a low capital cost, are compact and energy efficient. Technical, economic, and social aspects of this method are briefly discussed.
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