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Analysis of the advantages and disadvantages of the new refrigerant and traditional refrigerant
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Analysis of the advantages and disadvantages of the new refrigerant and traditional refrigerant

  • Categories:Trends
  • Author:
  • Origin:
  • Time of issue:2020-04-16 19:25
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(Summary description)For a long time, the refrigerants used in industrial refrigeration systems are mainly industrial salts, ethanol, and ethylene glycol in dichloromethane. The main advantage of these refrigerants is tha

Analysis of the advantages and disadvantages of the new refrigerant and traditional refrigerant

(Summary description)For a long time, the refrigerants used in industrial refrigeration systems are mainly industrial salts, ethanol, and ethylene glycol in dichloromethane. The main advantage of these refrigerants is tha

  • Categories:Trends
  • Author:
  • Origin:
  • Time of issue:2020-04-16 19:25
  • Views:
Information

For a long time, the refrigerants used in industrial refrigeration systems are mainly industrial salts, ethanol, and ethylene glycol in dichloromethane. The main advantage of these refrigerants is that the price is relatively low. The shortcomings are also obvious: low cooling capacity, high consumption, high viscosity, high energy consumption, corrosion of metals, and potential safety hazards. Due to the above-mentioned defects of the traditional refrigerant, the daily operation and maintenance cost of the refrigeration system is very high, but the service life is very short. To be precise, in a new cooling system, if a single salt or alcohol aqueous solution is used as the circulating coolant, it will take 6-8 years at low temperature and about 1 year at high temperature, or even less than one year The system will appear multi-point leakage phenomenon under the corrosion of salt or alcohol solution. It is very difficult to repair at this time, and once a serious leakage occurs, it will cause pollution to the environment. On the contrary, if there is no corrosion, the circulation system can be safely used for more than 20 years under simple maintenance. Because of the corrosion of the coolant, the equipment is damaged and there are many phenomena that stop production.

新型载冷剂与传统载冷剂优劣势分析

Glycol corrosion site

盐水腐蚀现场

Salt water corrosion site

To give two practical examples: a group of 12 carbon steel fermentation tanks built in 1992 by a brewery in the Beijing area. After 8 years of operation, by the peak production period of 2000, there was a large-scale leakage in the cooling zone. Finally, only the production was stopped for overhaul , Remove the insulation layer, cut off all corroded cold strips, and re-weld new cold strips. The entire overhaul cost spent more than 3 million yuan and lost millions of yuan when the production was stopped. In 2017, a 200m³ system of a pharmaceutical factory in Xiangyang, Hubei, used ethylene glycol aqueous solution as a coolant for less than half a year. The emergence of the above-mentioned problems not only caused severe economic losses to many enterprises and increased production costs, but some enterprises were also punished by the environmental protection department due to refrigerant leakage and polluted the environment, reducing their competitiveness in the same industry. At present, there are still many enterprises' low-temperature cooling systems that still use the original single severely corrosive salt or alcohol aqueous solution refrigerant. If no attention is paid, remedial measures will be taken as soon as possible. Once the above leakage problem occurs, the loss It will be difficult to recover.

钢块在盐水、乙二醇中放置一段时间与放置在冰河冷媒中对比样

Comparison of steel block placed in brine and ethylene glycol for a period of time and placed in glacial refrigerant

In response to a series of problems such as poor cooling capacity and severe corrosion of traditional refrigerants used in the enterprise's refrigeration process, glacial refrigerants came into being. This series of products is suitable for the temperature range of -145 ℃ ~ 330 ℃, there are more than 20 different models to choose from, is the replacement of industrial salt, alcohol, ethylene glycol, methylene chloride and other refrigerants. It has the characteristics of low consumption, strong cooling capacity, wide applicable temperature range, excellent anti-rust performance, etc. No matter the new and old cooling systems, without any changes, can be added directly. Completely solve the problem of severe corrosion of other cooling media equipment; eliminate the risk of internal and external leakage of the cooling system; energy saving and environmental protection, greatly reducing the daily maintenance cost of the system. As long as it is used continuously, the service life of the cooling system can be doubled!

Therefore, through the above comparisons, it is found that the new refrigerant will gradually replace the traditional refrigerant in the future!

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