PRESENTATION OUTLINE
We often think of air conditioners as just that, a machine that conditions (i.e., cools) the air around us. But the effects of air conditioners reach far beyond atmospherics to the ways we build our houses, where in the country we live, and how we spend our time. Air conditioners are the enablers of modern American life.
Before air conditioning, in a bygone and surely less comfortable era, people employed all sorts of strategies for keeping cool in the heat. Houses were designed with airflow in mind -- more windows, higher ceilings. A style once prevalent in the American south, the dogtrot house, was really two smaller cabins -- one for cooking and the other for living -- connected under one roof with an open-air corridor between them. In addition, many homes had porches where families could spend a hot day, and also sleeping porches with beds where they could ride out a hot night. Many home designs took passive solar design principles into account, even if they didn't name them as such.
Air conditioning is the process of altering the properties of air (primarily temperature and humidity) to more favourable conditions. More generally, air conditioning can refer to any form of technological cooling, heating, ventilation, or disinfection that modifies the condition of air.
EUROPE had an extreme heat wave in 2003 which required lots of air conditioners.
NORTH AMERICA, ASIA, AND SOUTH AMERICA are some of the most modern continents, meaning that they have the most modern air conditioning systems. It has improved their lifestyle.
AUSTRALIA AND AFRICA are two of the hottest continents which means that air conditioning is most important to them. They use some of the older air conditioning systems because both continents are filled with poverty.
ANTARCTICA is obviously the coldest continent. The few people that live there, use heating systems on a daily basis. Without heating systems, there would be little to nobody living there. The cold is absolutely unbearable without a heating system.
