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How a finnoven works.
Massive stone heaters, also known as finnovens, work using the
counter-flow-principle. This principle, developed in Finland, leads
the hot gasses with temperatures of approximately 1000ºC from the
fire core through counter-flow-canals down to floor-level.
On their way from top to bottom they transfer their warmth. After
that they exit through the chimney. An economic and
environment-friendly system.
The stone mass of adobe-heaters, soapstone-heaters and finnovens has
a large capacity to store heat. Because of these warmth-accumulation
qualities you only need to make a fire for a short while to produce
enough radiation-warmth for a day.
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