apr 1, 1793 - Furnace

Description:

"It wasn’t until 1793 that British engineer William Strutt designed a furnace, modeled after John Evelyn’s design nearly one hundred years prior. Strutt’s furnace design heated outside air through a passage built underground. In the early 1800s, Strutt teamed up with engineer Charles Sylvester to design a heating system for a hospital that cleaned the air along with heating the building."

Source:
https://catesheatingandcooling.com/blog/history-central-heating-systems/

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