It looks and sounds great. The only obvious detrement is the size which means you can't have one just anywhere. Posibly they can enlarge on the idea with the chimney being inside a building with condos or offices around the outside and a parking lot a level below the hot air collection surface. The unit could then provide all the power required for the building and not look out of place. If it was possible to have he hot air collection area seve as a hot house for year round vegitation that would be an additional asset. The condo part is an easy item to add as is the parking. Now is the time to give the idea some thought.
jim wood