Hi Matthew,
it's hard to estimate the heat load on the bulb fixture (and we never had thermo sensors in place or alike).
A metal fixture was simply chosen because it's 400 Watts to the bulb.
The same applies to the fan configuration: just guts feeling
After that failure we added a second fan (2.5 W)
it's hard to estimate the heat load on the bulb fixture (and we never had thermo sensors in place or alike).
A metal fixture was simply chosen because it's 400 Watts to the bulb.
The same applies to the fan configuration: just guts feeling
- Original configuration:
The first bulb cracked after 2 x 15 minutes run time. It might have been a handling failure, i.e. mechanical stress, or even production mishap, or plain overheating. We had no idea how to check airflow, as the bulb doesn't provide something like a defined airflow channel.
The bulb is located over a tube which contains power supply and ballast. We had sucked away the air at the other end of that tube with a
blower fan (20W)
After that failure we added a second fan (2.5 W)
- directly above the bulb
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