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hawkspur

passive ventilation/ simple heat exchange

Hawkspur
11 years ago

In my new house, I would like to have passive ventilation, mainly using the stack effect by using openable high level windows for stale air egress, but supplemented with non-passive extraction in the bathroom and kitchen.

For my air intake, is it worth laying simple rectangular low profile, long straight ducts in the floor slab, (connected to closable floor grilles) to hopefully use the concrete to moderate the temperature of the incoming air a little?

I live in a mild temperate maritime climate in NZ, where the most extreme temperatures are about -5C and 30C, and those are not at all frequent.

Any comments?

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