Although Chicago is known as the Windy City, it is in fact less windy than many other major American cities. Average wind speeds range from 8 miles per hour (13 km/h) in late summer to 12 miles per hour (19 km/h) in spring months.
A flue is a duct, pipe, or opening in a chimney for conveying exhaust gases from a fireplace, furnace, water heater, boiler, or generator to the outdoors.
Top 10 unbelievable historical concurrencies. A flue pipe is a metal pipe that is run inside of a masonry chimney or run as a stand-alone chimney pipe leading from a furnace or heating stove. The flue pipe carries smoke and noxious fumes out of the living space of a building and vents the fumes into the atmosphere.