Why don’t we just open the windows? Covid-19 prevention lost in translation

Re:Why don’t we just open the windows? Covid-19 prevention l... by chrismorgan on Monday November 29, 2021 @01:45AM (#29377105)

Certainly the comfort band is the key to it. Everything else is rounding error under even the most pessimistic estimates.

On phase change energies: I don’t know enough to quantify things definitely there, but https://en.wikipedia.org/wiki/Latent_heat#Specific_latent_he... looks like the right thing, and suggests around 2.4kJ/g, which with water being as much as 5% of the air (100% humidity at 40°C) would be as much as cooling the air down by about another 0.12°C for removing all of it.

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Re:Why don’t we just open the windows? Covid-19 prevention l... by mlyle on Monday November 29, 2021 @12:56PM (#29382879)

Each of the terms is a small single digit percentage, but they multiply together to become a small but noticeable effect on building efficiency.

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Re:Why don’t we just open the windows? Covid-19 prevention l... by chrismorgan on Monday November 29, 2021 @09:00PM (#29387925)

Each of the terms are single digit percentages if you were completely replacing cool, implausibly bone-dry air with implausibly hot and saturated air. With more realistic ambient and goal saturation, temperature and leakage figures, I think you’re looking at more like single digit hundred thousandths or millionths for most of the terms.

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Re:Why don’t we just open the windows? Covid-19 prevention l... by mlyle on Monday November 29, 2021 @10:33PM (#29388651)

I disagree, and you can take it up with the people codifying energy efficient building standards and working on compliance with them if you care. :P

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