It depends on the liquid's vapor pressure (https://en.wikipedia.org/wiki/Vapor_pressure https://en.wikipedia.org/wiki/Vapor_pressure) and temperature relative t

It depends on the liquid's vapor pressure (https://en.wikipedia.org/wiki/Vapor_pressure https://en.wikipedia.org/wiki/Vapor_pressure) and temperature relative to the surrounding environment. I am very skeptical how much usable power could be generated using the 'drinking bird' approach. Show me the engine or generator that the drinking bird powers . . .