What key features allowed the Franklin Stove to burn longer with less wood?

Answer

A series of metal plates and a controlled air intake system

The Franklin Stove, or Pennsylvania Fireplace, achieved greater efficiency over an open hearth primarily through mechanical modifications to combustion management. Its design incorporated a series of metal plates strategically placed within the apparatus, coupled with a system designed to control the intake of air feeding the fire. This combination enabled the fire inside the cast-iron enclosure to burn hotter and more completely than an open fire. By radiating heat into the room rather than allowing it to escape immediately up the chimney, and by optimizing the burn cycle through controlled air, the stove successfully reduced the overall quantity of wood required to produce necessary heat.

What key features allowed the Franklin Stove to burn longer with less wood?

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