Electricity and Gas for the World!

Introducing Magnetic AC: IDT Energy

Certainly, we’ve all seen amazing developments over the decades with air conditioning.  While air conditioners used to be only for the lucky few, today they are ubiquitous. With technology in all different types of appliances advancing rapidly, it is no wonder that the same improvements will be used in air conditioning technology.

In April, 2009 the United States Mission to the United Nations in Geneva introduced to the world its latest “MagLev” chiller, a 225-ton air conditioner of the future.  The “MagLev” which stands for magnetic levitation, solves the problem of the wearing out of the compressor component of a standard air conditioner due to the generation of heat and the wearing out of the ball bearings that support the spinning drive shaft of the compressor.  By the time you need to replace the compressor the air conditioner burns double the energy to create the same amount of cooling.
The “MagLev” uses a magnetic field instead of ball bearings. The drive shaft of the compressor is suspended in air with magnets while it spins at about 40,000 revolutions/minute. This clever design completely illuminates friction, allowing the compressor to work 30% more efficiently, creates less heat, and works at maximum efficiency throughout its life.

Part II: IDT Energy and How Your AC Works

IDT Energy New York continues the explanation of how your air conditioner keeps you and your family really cool.

The coolant arrives at the compressor as a cool, low pressure gas. As its name implies, the compressor squeezes the gas, which raises its temperature.  The fluid then leaves the compressor as a hot, high pressure gas which flows into the condenser. The fins of the condenser act like a radiator in a car and help the heat disperse faster. Then the coolant leaves the condenser as a much cooler liquid now under high pressure. This liquid goes into the last part of the air conditioner, the evaporator, through a narrow hole. When it comes out the other side the pressure drops and the liquid begins to evaporate back into a gas.

While the liquid changes to a gas, evaporation, heat is remove from the air around it. The fins of the evaporator are there to enhance this process. Inside the evaporator a fan helps to further distribute the cool air created by this process throughout the house.
IDT Energy hopes that having a better understanding of your air conditioner will help you use it more efficiently and with more appreciation for the work it does to keep us comfortable in the hot, humid New York summertime.

Part I: How Your AC Works

One of the most beloved of all appliances, especially in New York City in the summer is the air conditioner. IDT Energy would like to take readers on a little tour of how these wonderful devices work.  First off, it is good to know that air conditioners work the same way as refrigerators, the only difference being the scale on which they work. The main principle involved is the use of a volatile liquid, meaning a chemical that easily changes form liquid to gas and then back again. This is referred to as the coolant. The coolant is used to transfer the heat which is found inside the home, and remove it to the outside.

There are three main parts to an air conditioner. Two of the parts, the compressor and the condenser are usually found on the outside part of the air conditioner. The third part, the evaporator, is inside the house.


Where would New Yorkers be without air conditioners to make summer a bit more bearable? IDT Energy in New York wants to take a look at our good friend the air conditioner, its history, how it works, and what we can expect from these marvels in the future.

The first air conditioners began way back in the middle of the 18th century when Benjamin Franklin and a chemistry professor of chemistry at Cambridge University did some experiments examining how evaporation can be used in order to rapidly cool an object.  They discovered that liquids that evaporate quickly such as ether and alcohol could be used to reduce the temperature of something lower than the freezing point of water.

The earliest uses of air conditioning were industrial and not for the personal comfort of individuals.  In 1902 Willis Carrier invented the first electric air conditioner in Syracuse, New York. It was made for a printing plant to control the temperature and humidity which could adversely affect paper dimensions and alignment of ink.  Soon the technology was used to improve working conditioners in the plant, and this developed into the Carrier Air Conditioning Company of America. As time passed air conditioning was used more often to increase the comfort level of homes, cars and workplaces. By the 1950s air conditioning quickly gained popularity, and now today it is hard to imagine living in a place like New York City without it.