Steam Jet Cooling Functioning
Steam jet cooling calls for the use of high pressure steam that will cool water. This type of cooling is used in industry because cooling processes are very costly. The use of water as the coolant is highly efficient and less costly.
In this system, steam is sent through a vacuum ejector to exhaust a closed vessel. The vacuum in the vessel causes the water to evaporate and by doing so it gives up its heat. Chilled water is sent to the air coolers and the evaporated water is recovered in condensers.
Steam jet cooling uses a steam injector instead of a mechanical compressor to compress refrigerant. This is preferred and does not require the use of refrigerants that may be harmful to the environment. This process calls for the use of components not otherwise found in cooling systems. An evaporator is a large vessel that is insulated to protect against high water temperatures. The steam jet ejector is used to propel the steam out. A condenser chills air using chilled water. It is significant to point out that the steam being sent out the nozzle of the jet ejector reaches supersonic speeds.
Advantages and Disadvantages
The advantages of this system are many. The construction of a steam jet cooling process is simple. The production and maintenance costs are low. Water is used so it is safe. It can be applied anywhere steam is needed.
The disadvantages include the necessity of a very large condenser. The coefficient of performance is low. Generally, the ejector is not efficient as a great deal of evaporation occurs at supersonic levels.
Steam Jet Cooling Applications
This type of cooling process works well with paper and pulp industry locations. It is also used in gas plants, rubber and vulcanizing industries, and food processing plants.