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Heat Exchanger > Liquid Nitrogen Cooling

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Liquid Nitrogen Cooling

Liquid Nitrogen Cooling Two gases often used in their liquid forms are nitrogen and helium. Liquid nitrogen is used in many cryogenic cooling systems. Liquid nitrogen is a valuable coolant because of its low boiling point, inexpensive price, and low toxicity. It is popular as a cost-effective way to cool down a chemical reaction, to temperatures below -40°C and facilitate faster reactions with complete temperature control.

Benefits of using a Liquid Nitrogen Heat Exchangers are:
  • These engineered systems provide an economical solution for direct, semi-direct or indirect cooling methods.

  • No matter what the reaction level is, the reaction temperature can be controlled by balancing, increasing or decreasing the flow of liquid nitrogen.

  • With few moving parts and simple temperature controllers, the systems are reliable and easy to maintain.

  • The power of liquid nitrogen as a refrigerant, coupled with uniformity of the exchange fluid, ensures perfect chemical reaction temperature control.

  • Indirect cooling can also be achieved by cooling a circulated heat transfer fluid within a liquid nitrogen cooled exchanger.

  • Liquid nitrogen can be delivered directly to the site and can be re-used in other plant processes to improve overall process economics.

  • Liquid nitrogen is capable of changing temperature many times faster than a mechanical refrigerated cooling system. Faster temperature change decreases total test time thereby increasing testing efficiency and saving money.

  • Liquid nitrogen exchanger require considerably less space than a mechanically refrigerated chamber because of absence of large compressors and condensers.

  • There are no adverse environmental effects from discharging the nitrogen gas into the environment, however, other cooling refrigerants contain CFCs that contribute heavily to ozone layer depletion.

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