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warm air

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Rich D

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Nov 18, 2020, 4:37:42 PM11/18/20
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A nearby college includes a building, surrounded by an
outdoor arcade, at street level. At one point, the warm
internal air is expelled, which is natural, they perform
continuous circulation. A nice spot, on a cold night!

However, I wonder, is there any hazard in breathing that air?
Is it chemically processed somehow, contaminated?

And, isn't it inefficient? The outgoing air ought to
pass through a heat exchanger, to warm the incoming air.
Isn't that wasted energy?

--
Rich

Jasen Betts

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Nov 19, 2020, 1:00:43 AM11/19/20
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On 2020-11-18, Rich D <rdelan...@gmail.com> wrote:
> A nearby college includes a building, surrounded by an
> outdoor arcade, at street level. At one point, the warm
> internal air is expelled, which is natural, they perform
> continuous circulation. A nice spot, on a cold night!

> However, I wonder, is there any hazard in breathing that air?
> Is it chemically processed somehow, contaminated?

possibly it has less oxygen that fresh air, possibly stink and virus
particles?

> Isn't that wasted energy?

It might be, it depends if their AC is heating or cooling

--
Jasen.

Ralph Mowery

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Feb 14, 2021, 11:27:40 AM2/14/21
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In article <34d62748-1e16-4bd2...@googlegroups.com>,
rdelan...@gmail.com says...
Usually the air is passed through a heat exchanger so some of the hot
inside air will heat the cold outside air before it enters the building.

There is no chemicals involved. You will be exposed to a combination of
all the air in all the rooms in the building. Could be a good way to
contract any virus that anyone in the building has.

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