"Father of Air Conditioning" - Willis Carrier

Willis Carrier is one of the 100 most influential celebrities of the 20th century, and his contribution to the development of the US military industry is called "the greatest engineering achievement". Some people say that without him, the world's work efficiency would be reduced by 40%.

What was his motivation for inventing the air conditioner? Of course, it's because of the heat! Especially as a heating engineer.

In 1906, the world's first "air handler" (the predecessor of air conditioners) was born; in 1921, Carrier invented the first centrifugal air conditioner, which can be used for large-scale space refrigeration; in 1924, air conditioners moved from industrial use to civilian use. , but not yet popularized; in 1928, Carrier introduced the first home air conditioner.

After the outbreak of World War II and the Great Depression, household air conditioners have not been popularized until after his death and the post-war economic recovery in the United States, air conditioners officially entered thousands of households. China only introduced air conditioners after the reform and opening up.

We know Edison and Tesla, but very few people know Willis Carrier. I believe everyone will know him after that.