3000W Chinese Gensets Info.
professor95 wrote: EDIT ADDED 45/5/2013- When this thread started in March of 2005, I never expected to see it survive this long or amass the quantity of information that has been shared here. In...
Forum Discussion
Mr. Professor,
With all do respect (I really mean that), I have a couple of suggestions, only because your prototype is nearly identical to mine. I wrote about it last year, but never got around to posting pictures.
On the fan side, I actually cut a trim ring out of the same material that fits perfectly snug around the outside of the fan, and glued it to the baffle. I believe it creates better suction, and thus higher velocity of air through the enclosure. It also obviously lets less sound escape. Another thing I did was was glue spacers about 4 inches thick around the sides and top, and covered with another piece of sound deadening material. This left the opening facing down, thus further reducing sound. Since this side is suction, I don't feel like it restricted air flow much, if at all. Warning!!! It is ugly.
On the opposite side, I did the exact same thing (without the down facing part) around the gen head. I also added a large hole right above the muffler. This is where I measured the airflow coming out to be the strongest. With that hole comes lots of hot air, and sadly, noise. I think it could be directed down like on the fan side, but since it is pushing, not pulling, I do believe it would restrict airflow some.
I just thought I would throw my already made mistakes and successes out there. No offense intended. With my muffler inside, I had about a 10 degree higher temperature, and a 6 db reduction in noise. The most interesting, and important thing to note is what happened to the head temperature once it was shut down; it obviously went way up. This makes sense as air was no longer moving over it and disapating heat. Everyone should keep in mind that the generator can operate at a safe temp while running in a box. But once you shut down, air is no longer circulating, and you have it trapped in an insulated box.
Just my observations.
With all do respect (I really mean that), I have a couple of suggestions, only because your prototype is nearly identical to mine. I wrote about it last year, but never got around to posting pictures.
On the fan side, I actually cut a trim ring out of the same material that fits perfectly snug around the outside of the fan, and glued it to the baffle. I believe it creates better suction, and thus higher velocity of air through the enclosure. It also obviously lets less sound escape. Another thing I did was was glue spacers about 4 inches thick around the sides and top, and covered with another piece of sound deadening material. This left the opening facing down, thus further reducing sound. Since this side is suction, I don't feel like it restricted air flow much, if at all. Warning!!! It is ugly.
On the opposite side, I did the exact same thing (without the down facing part) around the gen head. I also added a large hole right above the muffler. This is where I measured the airflow coming out to be the strongest. With that hole comes lots of hot air, and sadly, noise. I think it could be directed down like on the fan side, but since it is pushing, not pulling, I do believe it would restrict airflow some.
I just thought I would throw my already made mistakes and successes out there. No offense intended. With my muffler inside, I had about a 10 degree higher temperature, and a 6 db reduction in noise. The most interesting, and important thing to note is what happened to the head temperature once it was shut down; it obviously went way up. This makes sense as air was no longer moving over it and disapating heat. Everyone should keep in mind that the generator can operate at a safe temp while running in a box. But once you shut down, air is no longer circulating, and you have it trapped in an insulated box.
Just my observations.
