Imagine an open-air like room on the terrace with such windows! Ah the bliss..!
yeah, that would be a dream and it would feel really surreal, while it's actually possible. I hope those windows aren't too expensive. I would definitely order some
Redesigned Window Stops Sound But Not Air
21–27 of 27 posts
Re: Redesigned Window Stops Sound But Not Air
#22Wait, it lets air through. So its not a window; its a screen?
Re: Redesigned Window Stops Sound But Not Air
#23Earlier quoted context omitted.
laser cutters are very inexpensive and accessible nowadays. Once somebody published a device, producing such a set of acrylic sheets with holes is not a problem at all.
Ponoko will laser cut and ship you acrylic for fairly cheap: http://www.ponoko.com/make-and-sell/show-material/19-acrylic...
hmm.. you could use solar energy to heat the air coming through, otherwise the building would cool down right?
Also is it possible to let the air pass through into one direction only? I think strategically placing incoming/outgoing air-pass through windows, could make a decent air-flow (+heating) system.
Re: Redesigned Window Stops Sound But Not Air
#24I pulled the TL numbers from the paper and came up with an STC rating of around 31dB for the 20mm hole model. That is roughly the same STC rating as a decent dual pane window.
Nice, that's good, right? Since it's as good as a dual pane window and also lets air through.
It's not terrible, it's certainly impressive that they achieved that level of isolation with holes in it. Windows designed for high sound isolation will have STC ratings in the 40-48ish range. An STC increase of 10 equates to half as much sound passing through (as a human perceives it anyway).
As for the air passage, I'm curious about the real world flow numbers.
Just an off the cuff guess: it seems like the core principle is based on resonant cavities which I think would result in higher air pressure in the cavity than inside or outside the window. In a setup like that with calm ambient conditions I wouldn't think much air would actually pass through the panels, the higher pressure in the cavity would act as a bit of a wall. In windy conditions I would imagine much more air would pass through, but I bet there would be a corresponding decrease in sound isolation as air blasting through the cavity wouldn't be able to dissipate as much energy.
Re: Redesigned Window Stops Sound But Not Air
#25What I like about a good window is its ability to let in light without also letting in the air, as I've observed that outside air tends to be rather colder (or hotter) than my preference.
Cool science, though. If they can build these cheaply and preferably thin, it might be good for inside the house. Or in the paper-thin apartment walls, and maybe along with some much-needed thermal insulation while they are in the wall anyway.
Re: Redesigned Window Stops Sound But Not Air
#26Wait, it lets air through. So its not a window; its a screen?
Or a fence. An optically clear, noise-reducing screen/fence.
For use in those places where you don't want to impede airflow (think a transom over a doorframe), but where you do want to reduce noise transmission.
Pretty cool!
Re: Redesigned Window Stops Sound But Not Air
#27Earlier quoted context omitted.
Thanks for reminding me how much I want to escape to the countryside.
I live in the countryside. Ask me about neighbouring Sheep, Goats, barking Dogs, braying Donkeys, logging trucks, tractors, screeching Baboons, honking wild Geese,...
I used to live in the country, but I wasn't very close to farms with livestock.