Can someone explain the heat exchanger of a wood stove?
Perhaps I misunderstood your question. Are you talking about an exchanger for water or hot air. For air, there is usually a fan motor that pushes air through a series of tubes. The air gets hot and exits the tubes into the room and heats it.
My mum used to have a wood stove that water ran through. In the 1950's my dad an dmum made a solar water heater using some glass, coppertube, black paint, a water tank... their wood stove... the water tank was in the roof and gravity fed to the shower, bath, vanity and kitchen sink. The wood stove would heat the water at floor level and by convection this would travel through the pipe into the roof space... teh solar panel would have a similar effect. I remember as a child we never had a lot fo water pressure but man it sure did get hot. A heat exhangeer in a wood stove... it wouldnt matter if it was water or air.. the fact is that it induces movement by reason that hot air/water is ever so slightly lighter than cold air/water causing circulation. In a wood heater.. stick a fan on that and you get hot air blown out whilst cold air is drawn in. Something like that, I suppose..
