Tuesday, February 15, 2011

HAWT BLACK FACT ~ David Crosthwait Jr.

African-American mechanical engineer, David Crosthwait Jr. created the heating systems for the Rockefeller Center and New York's Radio City Music Hall.

David Crosthwait was born in Nashville, Tennessee and grew up in Kansas City, Missouri. He received a Bachelor of Science degree (1913) and a Master of Engineering degree (1920) from Purdue University and honorary doctoral degree in 1975. Crosthwait was an expert on heat transfer, air ventilation and central air conditioning. He was the author of a manual on heating and cooling with water and guides, standards, and codes that dealt with heating, ventilation, refrigeration, and air conditioning systems. During the 1920s and 30s, he invented an improved boiler, a new thermostat control and a new differential vacuum pump, all more effective for the heating systems in larger buildings.


Story & pictures: biography and inventors

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