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There are more uses of air cooled heat exchangers, much like the upstream production, refineries and petro-chemical facilities. It can also be employed on situations with good temperature, high pressure, corrosive fluids and environments. Moreover, air coolers could be equipped and employed in oil and coal refineries; compressor stations for gas pipelines; subsurface gas storage facilities; plants producing polychlorvinyl, polyethylene, glass fiber, biplastic; caustic soda plants; by-product coke plants and ammonia transportation and handling plants. 3. Once you have see that accredited school that you are getting excited about get going to, next you need to figure out how many classes are you able to take, whether its an easy version of the traditional school into an internet school, otherwise, lectures are available on the internet. If the latter options befits you right then ensure things are all available on the web and you will avail it anytime of the day, in a straightforward downloadable format. 5. The concentration of their language