Re: Oxygen percent in a room
- From: "akapen" <foom@xxxxxxxxxxxxx>
- Date: Sun, 08 Jul 2007 01:57:32 GMT
"zxcvbob" <zxcvbob@xxxxxxxxxxx> wrote in message
news:5farj9F3bfkldU1@xxxxxxxxxxxxxxxxxxxxx
Jim wrote:
I need some help in trying to calculate the percentage of oxygen existing
in
a closed room. This is partly just for my interest, but there is a
practical side to my question also.
I live in a recently built house that is one of these "super-insulated"
structures with little outside air exchange except what is forced via
fans.
During the winter months I live primarily in a couple of rooms closed off
from the main house to save on heating bills.
I have equipment that very accurately measures the carbon dioxide level
in
real time, that is located in my main living area. I live at 3000 feet
elevation, and the house is all electric; no oxygen consuming heating,
not
even a wood buring stove. I don't have any way of directly measuring o2
in
the house.
The measured co2 in my living area ranges from approximately 500 ppm to
over
2000 ppm. The higher concentrations generally occur during the winter
months when I am spending more of my time indoors, and am preserving the
heat by running the forced air intake fans less. (This will be changing
in
the future, as I will be forcing air from a solar heated porch into the
house during some winter daylight hours)
My question is, from knowing the co2 concentration (and humidity percent
also) in a closed space, how can I calculate the oxygen concentration? I
know that the o2 conentration of normal dry air is around 20.95 percent,
but
suspect that the relationship is not perfectly direct between the
increase
in co2 and the decrease of 02.
Any help on this math problem would be appreciated.
Thanks
Jim
Is Al Gore in that room? That's the only way i see it being a problem.
Bob
Standard Problem in submarines.
They never "run out of air", there is always plenty of O2.
They accumulate an excess of CO2, big problem.
One solution for commercial subs is a simple "air hood" which
is nothing more than a plastic bag which one wears over the head,
with a small CO2 scrubber canister incorporated.
It is said that a sub with this equipment has an emergency
submerge time of up to 72 hr.!
I agree that Al Gore would be a problem, but perhaps manageable,
under the circumstances.
Cheers,
Tony
.
- References:
- Oxygen percent in a room
- From: Jim
- Re: Oxygen percent in a room
- From: zxcvbob
- Oxygen percent in a room
- Prev by Date: Re: Oxygen percent in a room
- Next by Date: Oxygen percent in a room
- Previous by thread: Re: Oxygen percent in a room
- Next by thread: Re: Oxygen percent in a room
- Index(es):
Relevant Pages
|
