In message , Andy Burns
writes
harry wrote:

There will be insufficient heat from an LED to run his "fan/turbine"

He doesn't want to drive the fan with heat, he has his pump for that.

Indeed. I did wonder whether the original bulb blew because I was
pumping a jet of cold air up the side of a hot bulb. Probably not, but
at least a cold LED bulb will not worry about a jet of cold air.
--
Graeme