Sooo i'm not an expert or an engineer at all just had thought and throwing it out there... in the hush box you would want baffling foam but your worried about heat and melting. Would the baffling foam still work if you sprayed it down with say a High heat rust O leum that they use for engine blocks? or some kine of reflective metal spray that you can put on it.. (honestly don't know if that is a thing)BBadger wrote:Remember that the main issues with making a good baffle is that it needs to provide proper ventilation and not get too hot.
It's actually pretty hard to absorb sounds with materials. So when you build a baffle, and are trying to block the sound all around, it just isn't that efficient. It's better to reflect or block the sound, which is no doubt why people just put their generators behind a wall-surface to the chagrin of people on the generator-side of the wall.
In that light, something I'd like to try or see someone try is making a parabolic reflector that aims the sound upwards. There's a whole sky of unoccupied space that can absorb the sound. Plus, the reflector being open at the top means that heat can vent out the top as long as there is proper ventilation below (which can be provided via holes), Though the reflector wouldn't have to be perfect, it would need to be relatively large compared to regular baffles, which is a logistical concern. Still, it could look like a nice art piece.
The reason for my question was I was because the first thing that popped in my head for a hush box was a dog igloo, and if you took the bottom off and some how closed the big opening on the side and put ventilation in with maybe big fans behind the baffling foam and sprayed the foam so it dosn't melt... then you could pick up and set down this dome over your generator and it would muffle a lot but not all of the noise.. and if you happened to have a dog then you could still potentially use the dog house during the winter months and it would be extra toasty inside.. *shruggs* Like I said <---- not an expert just had a thought
I observed a large dog igloo for around 40-50 on amazon, saw a company selling 12x12x2 12pack for 30 bucks, rattle can of high temp black abyss and some fans a bit of wiring.. all the gluuues... let me know if i'm waaay off