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--- planning:building_services:ventilation:basics:types_of_ventilation [2022/05/21 21:47] – wfeist
+++ planning:building_services:ventilation:basics:types_of_ventilation [2023/06/06 11:40] (current) – yaling.hsiao@passiv.de
@@ Line 3: / Line 3: @@
 For occupants, the most important planning aspects are health and comfort. Excellent air quality is especially essential and can only be achieved if "used" air is regularly replaced by fresh air. Opening windows twice a day is not enough (see [[[planning:building services:Ventilation:Basics:Types of ventilation#Purge ventilation through windows]]). Comfort ventilation based on the requirements for fresh air is therefore indispensable in every [[basics:what_is_a_passive_house|Passive House]]. A regular, guaranteed and adequate exchange of air in winter is only possible by means of comfort ventilation –  this also applies for ordinary new buildings. The issue here is not energy efficiency, but the health of the building's occupants; Indoor Air Quality (IAQ) has a much higher priority than energy conservation - but it turns out that there is no conflict at all, if efficient components are used.
-===== Gap ventilation =====
+===== Ventilation through leaks in the building envelope =====
 Gap ventilation through leaks is not adequate in the heating period at all (see also [[Planning:Airtight construction]]): \\
@@ Line 116: / Line 116: @@
 Just the right quantities of fresh air that are required for the good health and comfort of the occupants are supplied. Only untreated air enters the living areas, there is no recirculated air, thus providing a hygienic air quality.
-Ventilation can also take place if a simple exhaust air system and external air inlets are used.  The external air inlets let fresh (cold) air in the required amounts into the rooms.  However, for the Passive House the ventilation heat losses that would be caused by the disposal of the unused extract air would be much too high.  It would only be possible to adjust the energy balance with a high heating output.^
+Ventilation can also take place if a simple exhaust air system and external air inlets are used.  The external air inlets let fresh (cold) air in the required amounts into the rooms.  However, for the Passive House the ventilation heat losses that would be caused by the disposal of the unused extract air would be much too high.  It would only be possible to adjust the energy balance with a high heating output.
 ===== Heat Recovery with a Counterflow Heat Exchanger =====