In the 1600s, the Dutch East India Company employed hundreds of ships to trade goods around the globe. In order to fund their voyages, the company turned to private citizens to invest money to support trips in exchange for a share of the profits. In doing so, they unknowingly invented ...
(46)___ B:The air conditioner. You know, I live in Hong Kong. During the summer, the temperature reaches 35℃ or more. Without an air conditioner, I can’t study. A:(47)___ People will also get sick without cool air. Do you know what invention I like best? B:Sorry, Em...
Photo: The ozone hole over Antarctica that was caused by CFC pollution, mostly from air conditioners, refrigerators, and aerosols. Picture courtesy of NASA on the Commons. So what's the environmental damage? Let's consider the energy first. Every time you switch on the air conditioner in your...
The air conditioner system was invented by the four Goldberg brothers, Lowell, Norman, Hiram, and Max, developed on July 17, 1946.Commonly known as "Freon" which was a popular brand name, is part fluid, part gas, which is held under pressure inside the AC system. When the system is ...
Packard invented automotive AC all the way back in 1939, and in 1940 it was the first car company to offer factory-installed air conditioning. Of course, this early system didn't have a thermostat, but it was better than not having anything at all. The idea caught on, and by 1969, ...
(For more about standard air conditioners, see How Air Conditioners Work). It's a closed process — leaving a window or door open allows the cool air to escape and makes the air conditioner work harder to supply cold air. Swamp coolers are an open system. They rely on the flow of air...
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the simplest air conditioner ever invented, because it doesn’t need a refrigerant as an intermediate fluid to dump heat. The air packs compress the incoming air to heat it before sending it to another intercooler to dump the heat to the outside. The air then expands through an expansion ...
You might think that your air conditioner uses something called Freon. All air conditioners, including your car's air conditioning, use refrigerants to cool warm air. Freon is just one type of AC refrigerant. But Freon isn't the only refrigerant, and not all air conditioners use AC Freon to...
turning on the air-conditioner? 2.Why not 3.Why not/Shall we 4.Why not 5.You'd better 6.How about 12、 1.She wore sun glasses to protect herself from the sun light.( 改为一般疑问句 ) she sun glasses to protect herself from the sun light? 2.Let's start ...