I think you could redesign this to be 100% glass with no optic fibers or silica gel. Heat transport can be accomplished heating the water until it becomes steam

I think you could redesign this to be 100% glass with no optic fibers or silica gel. Heat transport can be accomplished heating the water until it becomes steam and then condensing it again at the bottom. Even if there isn't enough heat to produce steam you can still induce flow by exploiting the fact that hot water rises to the top of colder water. Water collection could be accomplished using a fog fence made from glass. https://en.wikipedia.org/wiki/Fog_collection https://en.wikipedia.org/wiki/Fog_collection