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
Finally, to discuss what I feel is the heart of the system - the fan. I initially started with a small household type fan attached to the round hole on the engine side of the box. The idea was to force outside air into the box and direct it at the engine and air cleaner, hence the placement of the hole. I then had two exit points, the hole in the floor and the hole in the back of the cover, which was placed near the muffler. I also had a pipe attached to the muffler which went through a hole in the floor, thereby directing engine exhaust out of the box completely. There was no opening on the top of the box.
This configuration ended up being a failure. The fan was small and didn't move that much air. The info did not rate the fan for any particular CFM, so I have no idea how much I was getting, but I'm guessing not much! The temperature inside the box quickly exceeded 150 degrees, even with the engine running with no load. This was unacceptable, so I moved on to plan B which obviously meant a more powerful fan.
However, I was afraid to put too big a fan blowing air into the box because that could pressurize the box somewhat. Pressurizing the box could result in reduced or even reverse airflow through the alternator, which I learned here would be a bad thing!
So time to switch gears and go to a exhaust fan setup, where I would be sucking hot air out of the box instead of blowing cool air into the box.
More on that this evening...
This configuration ended up being a failure. The fan was small and didn't move that much air. The info did not rate the fan for any particular CFM, so I have no idea how much I was getting, but I'm guessing not much! The temperature inside the box quickly exceeded 150 degrees, even with the engine running with no load. This was unacceptable, so I moved on to plan B which obviously meant a more powerful fan.
However, I was afraid to put too big a fan blowing air into the box because that could pressurize the box somewhat. Pressurizing the box could result in reduced or even reverse airflow through the alternator, which I learned here would be a bad thing!
So time to switch gears and go to a exhaust fan setup, where I would be sucking hot air out of the box instead of blowing cool air into the box.
More on that this evening...
