Early Hydronic Systems
Early hydronic systems used buoyancy to move water. Hot water is less dense than cold water and as a result the early hydronic systems were designed so that water from a boiler would rise up. The hot water would then travel through the pipe system until reaching a heat emitter. Then as the hot water would cool down, it would flow downward again. This cycle would then continue.
Today, thanks to electricity, hydronic systems can be configured in complex ways to deliver heat to specific areas. In contrast, early systems were limited. In addition, the flow rate created by buoyancy would be very weak. Electrical systems are able to circulate heat much more powerfully.
Indeed, today's systems are much more modern. But it is always instructive to learn about the old ways of being.
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