The older your office or classroom, the more likely you are to survive teaching this fall and winter, because of quack Civil War era science. Bloomberg explains here:
… It turns out that the prodigious output of steam-heated buildings is the direct result of theories of infection control that were enlisted in the battle against the great global pandemic of 1918 and 1919.
The Spanish Influenza, which caused just over 20,000 deaths in New York City alone, “changed heating once and for all.” That’s according to Dan Holohan, a retired writer, consultant, and researcher with extensive knowledge of heating systems and steam heating. (Among his many tomes on the topic: The Lost Art of Steam Heating, from 1992.)
Most radiator systems appeared in major American cities like New York City in the first third of the 20th century. This golden age of steam heat didn’t merely coincide with that pandemic: Beliefs about how to fight airborne illness influenced the design of heating systems, and created a persistent pain point for those who’ve cohabitated with a cranky old radiator.
Health officials thought (correctly) that fresh air would ward off airborne diseases; then as now, cities rushed to move activities outdoors, from schools to courtrooms. When winter came, the need for fresh air didn’t abate. According to Holohan’s research, the Board of Health in New York City ordered that windows should remain open to provide ventilation, even in cold weather. In response, engineers began devising heating systems with this extreme use case in mind. Steam heating and radiators were designed to heat buildings on the coldest day of the year with all the windows open.
The memories of the flu pandemic lingered. Engineering books from the 1920s often mentioned this need to design heating systems, notably the boilers and radiators, to operate with all windows open, a requirement of the “fresh air movement,” Holohan says. This health crusade, which has its roots in the post-Civil War era, saw fresh air as a necessity for good health; adherents believed that rooms with closed windows and tight airflow meant that others would breathe in your vapors and catch disease. The theory originated before modern germ theory, at a time when tuberculosis was a significant health threat. “They called unventilated air the ‘national poison,’” Holohan says.
… A key proponent of the idea was Lewis Leeds, a health inspector for Union Army field hospitals who came to the conclusion that “vitiated,” or spoiled, air was the cause of the many diseases. The “spent breath” of the occupants of poorly ventilated homes contributed to 40% of the deaths in the country, he claimed, and often said “man’s own breath is his greatest enemy.”
I imagine this explains why the hall formerly known as Deady is hellishly hot, while by the time the HVAC engineers (OK, just HV) got around to PLC they cut things a bit closer on the heating margin.
Anyway, two days back in the office and I’m already learning stuff from hallway conversations again. Thanks to a PLC floormate for the link – not really sure who it was, what with the masks.