Air recuperators
The massive use of modern airproof energy-saving double glass window panes creates a problem with indoor ventilation – natural ventilation does not work because double glass window panes are airproof, which leads to violation of heat transfer hygienic norms. As the result oxygen content in the air is decreasing, carbon dioxide content, nitrogen content and radon content are increasing, which is harmful for human health. Besides, relative air humidity is rising, which leads to the emergence of mould and other harmful bacteria and microorganisms. The use of standard ventilation units leads to heat loss, so double glass window panes become not so airproof as they should be.
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