File:Heat recovery ventilation schematic.png

Schematic of a heat recovery ventilation system in a house.

• 1: fresh air (from outside the house); can be either cold or hot; must atleast be o°C or above; at days this is not reached the air entering via this pipe must be heated, see here.
• 2: cold stale air (from inside the house). This cold, humid and smelly air is vented outside the house
• 3: manifold for pipes conveying warm stale air (from inside the house); the manifold equalises the temperature of all rooms
• 4: manifold for pipes conveying purified (no longer humid, smelly) warm air (from inside the house); the manifold equalises the temperature of all rooms
• 5: 'Counter current) air to air heat exchanger; for a close-up, see Counter_current_air_to_air_heat_exchanger.png

Note that inside the counter current air-to-air heat exchanger, filters are present to remove smells (e.g. from the garage or kitchen, ...) and water (to reduce moisture content of the air; e.g. from air sucked in from outside the house and from rooms such as the laundry room, bathroom, ...). There are also 2 fans present inside the counter current air-to-air heat exchanger.

The schematic was made based on the images at http://www.genvex.co.uk/images/p9.gif and http://commons.wikimedia.org/wiki/File:Heat_exchanger.jpg

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Created	Unknown date by Unknown author
Uploaded	March 18, 2013 by KVDP
License	GFDL