The term cryogenic is usually used to refer to something that produces or is related to very low temperatures. As such, the term cryogenics refer to gases that have been subjected to very low temperatures to form liquids or solids. The boiling point of these gasses is usually below -150 degrees centigrade. Nitrous oxide and carbon dioxide usually have higher boiling points but are also classified under cryogenic substances. Here are facts regarding Cryogenic gases.
At room temperature and pressure, these substances usually exist in gaseous form. They must be cooled below room temperature before they can be subjected to increased pressure so as to liquefy them. Cryogens usually turn into liquids under different conditions. However, all cryogens have two properties in common. First, they are extremely cold and secondly, small amounts of liquid turn into huge amount of gas when it evaporates.
A cryogenic liquid releases very cold vapor or gas. Moisture in the air condenses around it because of the low temperature. Highly visible fog is formed as a result of the vapor produced. If the tanks used to store cryogens are poorly insulated, the air around it condenses to form liquid air mixture.
There are risks associated with working with cryogens. For this reason, any person that handles cryogens needs to understand all the risks involved with the job clearly. In addition, they are supposed to implement various precautions in order to prevent and overcome accidents in case they occur. There are standards that have been formulated and are in use. These standards are meant to ensure safety of people who work with these substances.
Cryogens exist in three major groups, that is, inert gasses, flammable gasses, and oxygen. Each cryogen has its own unique properties, but they all fall in the three groups named above. Inert gasses do not undergo any form of chemical reaction to any great extent. As such, they do not burn and they do not support combustion. Examples of gases that can be classified under this group are krypton, neon, argon, helium, and nitrogen.
As the name suggests, flammable gasses are flammable and burn in the presence of air. Liquefied gasses, hydrogen, and methane are some of the gasses in this groud. Because of the ability of oxygen to support combustion, it is usually categorized in its own category. In the presence of oxygen, most substances that are generally incombustible normally burn. When discussing cryogens, this necessitates considering oxygen separately.
Given the dangers that are associated with cryogens, it is important that they are stored carefully. Storage is usually done in thermally insulated containers. The containers used are usually designed in a way that they can withstand extreme temperature differences. They can also withstand rapid changes in temperature.
There are several medical effects that cryogens can cause to the body. For instance, very cold gasses can cause burns on the skin which are similar to burns caused by heat. Exposure to extremely cold materials usually causes frostbites that cause the skin to appear waxy yellow in color. When tissues in the area of contact start to thaw, one experiences intense pain.
At room temperature and pressure, these substances usually exist in gaseous form. They must be cooled below room temperature before they can be subjected to increased pressure so as to liquefy them. Cryogens usually turn into liquids under different conditions. However, all cryogens have two properties in common. First, they are extremely cold and secondly, small amounts of liquid turn into huge amount of gas when it evaporates.
A cryogenic liquid releases very cold vapor or gas. Moisture in the air condenses around it because of the low temperature. Highly visible fog is formed as a result of the vapor produced. If the tanks used to store cryogens are poorly insulated, the air around it condenses to form liquid air mixture.
There are risks associated with working with cryogens. For this reason, any person that handles cryogens needs to understand all the risks involved with the job clearly. In addition, they are supposed to implement various precautions in order to prevent and overcome accidents in case they occur. There are standards that have been formulated and are in use. These standards are meant to ensure safety of people who work with these substances.
Cryogens exist in three major groups, that is, inert gasses, flammable gasses, and oxygen. Each cryogen has its own unique properties, but they all fall in the three groups named above. Inert gasses do not undergo any form of chemical reaction to any great extent. As such, they do not burn and they do not support combustion. Examples of gases that can be classified under this group are krypton, neon, argon, helium, and nitrogen.
As the name suggests, flammable gasses are flammable and burn in the presence of air. Liquefied gasses, hydrogen, and methane are some of the gasses in this groud. Because of the ability of oxygen to support combustion, it is usually categorized in its own category. In the presence of oxygen, most substances that are generally incombustible normally burn. When discussing cryogens, this necessitates considering oxygen separately.
Given the dangers that are associated with cryogens, it is important that they are stored carefully. Storage is usually done in thermally insulated containers. The containers used are usually designed in a way that they can withstand extreme temperature differences. They can also withstand rapid changes in temperature.
There are several medical effects that cryogens can cause to the body. For instance, very cold gasses can cause burns on the skin which are similar to burns caused by heat. Exposure to extremely cold materials usually causes frostbites that cause the skin to appear waxy yellow in color. When tissues in the area of contact start to thaw, one experiences intense pain.
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