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What Is a Steam Jet?

Steam jets are effective for powering items.
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  • Written By: Alexis W.
  • Edited By: Heather Bailey
  • Last Modified Date: 25 August 2014
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A steam jet is used to power various items that require energy to work. The force of steam has been used in powered technology for quite some time, and is most noted for its use in train engines that were powered by the compression of the water vapor. The water vapor — steam — produced in a steam engine is used as a means of providing enough force to move the mechanical components of the engine car, thus allowing the train engine to pull the rest of the connected cars.

Through advancements in technology, steam has become a much more useful, clean, and efficient means of producing energy, that has recently been utilized in a vast number of industries. The increased efficiency of steam is mainly due to the introduction of the steam jet, an ejection system that allows steam to be used in a number of ways, from cleaning to refrigeration. Steam power offers a much more effective means to power large appliances such as refrigerators and large air conditioning units.

The basic principle of a steam jet ejector system is quite simple in theory. The steam is pushed into a chamber through a high-pressure nozzle or opening, and only given one outlet from the chamber. This creates a vacuum inside the chamber the steam is being pushed through.

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The chamber in a steam jet may be filled with a liquid as well, which is at a much lower temperature than the steam. The low temperature of the liquid creates a cooling effect as the steam enters and exits. This causes the cooled liquid to be incorporated with the steam and a vacuum force is created that in turn forces the steam through the exit opening.

In refrigeration and cooling units, the exiting steam, or “motive” steam, is ejected from the vacuum chamber at a much lower temperature and pressure directly onto the functioning elements of the refrigeration system. This creates a cooling effect through the process of evaporation, after which the cooled air is then pushed through the cooling unit. There, it lowers the temperature and allows the refrigerator to provide its chilling function.

The steam jet ejection process is often utilized by large industrial manufacturing facilities because most of these types of facilities emit large amounts of waste steam into the air through their everyday manufacturing processes. The waste steam is subsequently used to operate various instruments within the industrial setting. This allows for more efficient operation of the large cooling units used for temperature and humidity control by making use of steam power that is being produced anyway.

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