A Few Tips on Industrial Coolants
In almost all industries operated, the machines used have to develop higher than required temperatures in their systems. Even the cars we drive have engines that continuously heat up as we tread on. It is therefore essential to ensure that an ideal industrial coolant is applied to maintain the efficiency of the machines. A coolant can be a liquid, gas or even rarely some solids can reduce or regulate the temperature of a system. Some of the essential characteristics of industrial coolants are important for improved functioning. They should have a high thermal capacity in such a way that they take considerably longer to heat up. Water is an excellent example of a coolant as it takes a bit longer to heat; the coolant should also be less viscous. Thissimply means that its resistance to flow should be little just like water.
Other notable characteristics include; low cost, non-toxic and chemically inactive. The coolant should be chemically inert so that it does not induce corrosion of the cooling system. Some of the gases that can be used as industrial coolants include; hydrogen, carbon dioxide, and helium. Hydrogen is preferred over other gases because it has a higher thermal conductivity and high specific heat capacity. This gas is widely used in rotary machines that are commonly affected by resistance to moving by wind because it has a low density which translates to low viscosity. Inert gases such as helium have a low affinity for neutrons to become radioactive, so they are preferred in gas-cooled nuclear reactors. Even carbon dioxide has a low reactivity tendency; hence, it is used in advanced gas-cooled reactors and magnox.
For the liquids, water is the most common coolant as it has a high heat capacity and it's relatively low cost makes it even a more preferred heat transfer medium. Water is mixed with chemicals such as corrosion inhibitors and antifreeze solutions. Corrosion inhibitors function to prevent any chemical reaction between water and the coolant system. Know more here!
Antifreeze solutions such as diethylene glycol are used when the water-based coolant has to bear with temperatures below zero degrees Celsius or even when its boiling point has to be raised. Pure deionized water is essential as a coolant in electrical equipment, transmitters, and vacuum tubes because it has low electrical conductivity due to the lack of ions. It is imperative to note that water and oil cannot be used concurrently as coolants as they can mix to disrupt the functioning of other machines. Some solids such as dry ice or even water ice can be used as a coolant when direct contact with the system is avoided. It is vitally important to determine some considerations before choosing an industrial coolant.
For more facts and information about industrial coolants, visit http://www.ehow.com/how_7924317_choose-air-duct-cleaner.html.