3000W Chinese Gensets Info.

Old & Slow wrote:

bobandcat:

So happy to see your back to us........I know for sure you have been there, done that. Two things, one glad you posted the temps. With 145 degrees in the enclosure on a 100 degree day, do you feel this temp. safe or could maybe the temp. rise to 160 degrees?
Second, Did you try only air intake to the engine side and the genhead side direct, no other air intake?. What I am finding is hot air recalculates after being expelled from the generator only to increase the temps. At present, my trial is venting the expelled air just above the engine head. Still temps running 180+. I do not know the highest temp. that would be safe.

Floyd
O&S

What temperature is safe is something you must decide for yourself.

Professor95 stated earlier in this thread the temps when the wiring insulation would start to break down.

Yes, the temperature could rise above my observed temps. That is why I have a gauge installed to watch the temps inside the generator compartment. I am also planning on installing a temp limit switch to turn the generator off if the temp rises.

As previously stated, my first exhaust fan (low cfm) was above the engine and was not successful. My second exhaust fan (300 cfm) in conjunction with the top exhaust fan seems to do the job. I personally believe that some combination of intake and/or exhaust fans are necessary to successfully cool the generator in an enclosure.

The entire bottom side of my generator is open so that re-circulation is probable. However, this is offset by the high fresh air volume created by the exhaust fans that expel the heated air.

If you want to eliminate re-circulation, you have to take air in from the engine side of the enclosure and have it exit through the opposite side of your enclosure and the bottom for the generator head cooling fan. To reduce noise, you would need to baffle these openings. This would be a reiterative process to obtain the desired temperature and noise balance.