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Research of anti-frosting technology in refrigeration and air conditioning fields: A review

机译：制冷空调领域防霜技术的研究进展

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摘要

Frost formation is inevitable in refrigeration and air conditioning fields. Frosting heavily impacts on the operating efficiency of equipments, and leads to considerable energy consumption for defrosting. This study reviewed anti-frosting techniques in refrigeration and air conditioning fields, including air dehumidification by solid/liquid desiccant, ultrasonic vibration, external electric/magnetic field, surface treatment, etc. Although air dehumidification is an effective method to delay frost formation, the problem of desiccant regeneration prevents this method from practical application. The methods of ultrasonic vibration and external electric/magnetic field are not suitable for large or medium-sized fin-tube evaporator, which result in additional investment and energy input. Besides, the anti-frosting effect of electric/magnetic field is not obvious and needs to be verified by more experiments. However, surface treatment has advantages of high efficient, low cost, environmental protection and practicability. In particular, the superhydrophobic surface shows excellent performance in frosting prevention and defrosting improvement. This is of great significance for energy saving in refrigeration and air conditioning fields. If the strength problem can be further improved by simple preparation methods, it will be a promising anti-frosting technique to deal with the phenomenon of frost formation in refrigeration and air conditioning fields.
机译：在制冷和空调领域不可避免地会结霜。结霜严重影响设备的运行效率，并导致相当大的除霜能耗。这项研究回顾了制冷和空调领域的防霜技术，包括通过固体/液体干燥剂对空气进行除湿，超声振动，外部电场/磁场，表面处理等。尽管空气除湿是延缓结霜的有效方法，但是干燥剂再生的问题阻止了该方法的实际应用。超声振动和外部电场/磁场的方法不适用于大中型翅片管蒸发器，这会导致额外的投资和能量输入。此外，电场/磁场的防霜效果不明显，需要更多的实验验证。然而，表面处理具有高效，低成本，环保和实用的优点。特别地，超疏水表面在防霜和除霜改善方面显示出优异的性能。这对于制冷和空调领域的节能具有重要意义。如果可以通过简单的制备方法进一步改善强度问题，那么解决制冷和空调领域结霜现象将是一种很有前途的防霜技术。

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