So it started out as a way of making people comfortable. Right? Well, not exactly. In 1882, thanks to Thomas Edison, the first electric power plant opened in New York making it possible for the first time to have an inexpensive source of energy for residential and commercial buildings. And by 1889, central station refrigeration was used in large cities to preserve foods and documents. It was well known that a cool surrounding could preserve foods and other perishables for a long time. But what was not well known was how humidity and heat were related. Then in 1902, Willis Carrier built the first air conditioner to combat humidity inside a printing company. Controlling the humidity in printing companies and textile mills was the start of environment management.

02/07/12

What's the difference between an air-conditioning compressor and
an air compressor?

Obvious question? Or is there more to it than the different kind
of gas that the air-conditioning compressor handles?

Of course the refrigerant gas has something to do with the design
of the air-conditioning compressor. For one thing, the refrigerant
gas has a unique property of being a liquid at normal room
temperatures, and it can become a gas at a slightly higher
temperature.

Furthermore, the lubricant oil can mix freely with the refrigerant
gas! And the lubricant have to be recovered and returned back to
the compressor.

A bit complicated isn't it?

The gas suction for the air-conditioning compressor is taken into
the lubricant portion of the compressor. This may be the crankshaft
housing, or similar. The body of the compressor is constructed in
such a way as to be able to suck the gas from there. Many
reciprocating compressors incorporate a safety head at the top
cylinder head. Any accidental liquid return will not be able to
damage the compressor.

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