The Age Before Air Conditioning

The Age Before Air Conditioning Stats on Staying Cool Today 72.8 Million 65% U.S. homes have central AC of all homes Homes by Region Midwest 70% 32% 52% Northeast West South 86% 22% - of U.S. homes have room AC units 1/3 of household energy in the U.S. is used for cooling 444 China will use more electricity for cooling than the U.S. by 2020 44 Worldwide AC sales rose 13% 50 Million air conditioners were sold across the world in 2010 in 2011 Cooling Off Over the Course of Time Common components of cooling systems Fans Ice Water Air Air flow, evaporation Lowered Evaporation Compression temperatures Cultural cooling techniques Ancient Egypt Ancient Rome Ancient China Medieval Persia Reeds with trickling water hung from windows to cool Water circulated through walls to cool homes Cisterns and wind towers used to cool buildings An inventor creates a manual, seven-wheel rotary fan rooms Fighting heat throughout history 747 1758 1842 1848 1851 Chinese Emperor Xuanzong builds Cool Hall with water-powered fan wheels Florida doctor John Gorrie begins work on first ice machine, Gorrie applies for patent for steam-powered machine to cool air Benjamin Franklin Australian experiments with rapid evaporation for cooling inventor used to cool down James Harrison uses ice machine to hospital rooms create refrigeration system 1945 1914 1906 1902 Massachusetts First air conditioner North Carolina New Yorker Willis inventor Robert Sherman creates first window AC unit installed in a home mill owner Stuart Haviland Carrier Cramer develops evaporative cooling invents first modern electric-powered air conditioner Sources: Provided by: en.wikipedia.org/wiki/Air_conditioning BERKEYS www.time.com/time/nation/article/0,8599.2003081,00.html www.census.gov/housing/ahs/about/faq.htmlrQ13 AIR CONDITIONING & PLOMBING www.sciencedaily.com/releases/2012/10/121022080408.htm www.dallasacandplumbing.com/about IV.•