It's more likely that Russia simply underreports malnutrition.
Anyway, got more specifics on the weather forecaster giving health advice on air pressure changes? I mean, other than, "watch out for rain"?
Anyway, got more specifics on the weather forecaster giving health advice on air pressure changes? I mean, other than, "watch out for rain"?
http://www.mayoclinic.org/diseases-conditions/migraine-heada...
http://www.webmd.com/migraines-headaches/headache-and-migrai...
It may be possible to have a fine degree of control over air pressure in today's high spec houses because of their high air tightness requirements.
I don't know that it is possible, but it wouldn't surprise me if it was because they are so tight they have to employ mechanical ventilation. I know hospitals employ air pressure as a way of controlling for disease spreading.
Houses are not that airtight. Long before a house gets airtight enough to maintain a pressure differential efficiently, the occupants will get ill as off-gassing from carpets and paints and wood finishes cannot escape. If you run a large negative pressure in a typical house, you also risk carbon monoxide poisoning from sucking exhaust from the furnace into the living space.
> I know hospitals employ air pressure as a way of controlling for disease spreading.
They use air pressure this way specifically because construction is not airtight. If you run a negative pressure differential (which requires a pretty beefy blower to accomplish and isn't very energy efficient), you end up pulling air in from all the gaps and cracks and porous materials, which means that contaminated air is not going into all the gaps and cracks and porous materials.
They are that airtight. That is why they put in mechanical ventilation such as HRV and ERV. The houses are that air tight that off-gassing is a problem once they get down below 0.6 ACH @ 50 pascals as they do in passive house builds.
> If you run a large negative pressure in a typical house, you also risk carbon monoxide poisoning from sucking exhaust from the furnace into the living space.
It happens, I read this the other week.
https://www.reddit.com/r/TinyHouses/comments/5ec33i/the_big_...
> They use air pressure this way specifically because construction is not airtight. If you run a negative pressure differential (which requires a pretty beefy blower to accomplish and isn't very energy efficient), you end up pulling air in from all the gaps and cracks and porous materials, which means that contaminated air is not going into all the gaps and cracks and porous materials.
I understand why a negative pressure room works. The linked to Wikipedia page explains it. They are an example of manipulating air pressure to affect an outcome.
What I don't understand is what point you're trying to make.
If it is that the air tightness of a house coupled with a HRV is not sufficient to effect barometric pressure on a human body, then I already acknowledged that might be so. It also might be sufficient, which is why suggested getting an expert's opinion.
Yes, off-gassing is a problem. Off-gassing is a problem long before a house is really airtight enough to efficiently maintain a pressure differential, though.
0.6ACH@50Pa means that your house is extremely airtight by even modern standards. It also means that a very light pressure is sufficient to cause your house to completely exchange it's interior air in less than two hours. If you want to depressurize a house enough to offset a high pressure weather system, you're going to be moving a lot of air.
> It happens, I read this the other week.
Yes, I know it happens. That's why I said it. This is another reason that you cannot significantly depressurize a house.
Plus your door would fly open and break your face when you turned the knob.
> What I don't understand is what point you're trying to make. > If it is that the air tightness of a house coupled with a HRV is not sufficient to effect barometric pressure on a human body, then I already acknowledged that might be so. It also might be sufficient, which is why suggested getting an expert's opinion.
Yes, I'm saying it won't work. For many reasons. You don't need an expert. It doesn't even pass the sniff test.
(BTW, I'm an engineer. I've built low vacuum systems and attempting to keep a home at a specific pressure is nearly impossible. It's certainly very expensive.)
What are your thoughts on vacuum insulation panels?
They have incredible R values, but leak over time. Do you see them being used in the housing of the future? I know somebody in Canada (the Leaf) is using them for a Tiny House project.
You're coming up with increasingly implausible explanations for why metereologists giving "health" advice means a culture is more scientific.
> increasingly
I've only given one (admittedly bad) example!