My central heating system has a device has a float to leak off gas; is there anything simillar for these small systems?
Maybe a T with a transparent tube sticking up to catch gas might be a nice addition.
Heat some water and one can see the dissolved oxygen being released long before any...
Regulation has its own issues
Without regulation, as the power station gets overloaded its voltage drops, which would normally help it cope.
With regulated power supplies, the load would not reduce and the power station is more likely to collapse.