Hot blast

rWotD Episode 3250: Hot blast Welcome to random Wiki of the Day, your journey through Wikipedia's vast and varied content, one random article at a time.The random article for Saturday, 28 March 2026, is Hot blast.Hot blast is the preheated air blown into a blast furnace or used in other metallurgical process. This technology, which considerably reduces the fuel consumed, was one of the most important technologies developed during the Industrial Revolution. Hot blast also allowed higher furnace temperatures, which increased the capacity of furnaces.As first developed, it worked by alternately storing heat from the furnace flue gas in a firebrick-lined vessel with multiple chambers, then blowing combustion air through the hot chamber. This is known as regenerative heating. Hot blast was invented and patented for iron furnaces by James Beaumont Neilson in 1828 at Wilsontown Ironworks in Scotland, but was later applied in other contexts, including late bloomeries. Later the carbon monoxide in the flue gas was burned to provide additional heat.This recording reflects the Wikipedia text as of 00:53 UTC on Saturday, 28 March 2026.For the full current version of the article, see Hot blast on Wikipedia.This podcast uses content from Wikipedia under the Creative Commons Attribution-ShareAlike License.Visit our archives at wikioftheday.com and subscribe to stay updated on new episodes.Follow us on Mastodon at @[email protected] check out Curmudgeon's Corner, a current events podcast.Until next time, I'm standard Brian.