The Magical Material——The Application of Aerogel in Heat Transmission Pipeline

Status of heat transmission pipeline insulation

The current industrial transportation heating pipelines have temperatures ranging from dozens of degrees to 5,600 degrees. These pipes are widely used in the thermal insulation engineering of aluminum magnesium silicate materials and glass fiber materials. About 30 years ago, almost all thermal insulation projects used rock wool and mineral wool materials. Until now, rock wool insulation has been eliminated in industrial thermal insulation projects. In the case of little difference in construction performance and waterproof performance, the main reason for being eliminated is the difference in thermal conductivity. The following are the thermal conductivity of the main materials at different temperatures.

问题 The problems of China's thermal insulation engineering now:

● The insulation structure is unreasonable, the insulation thickness is not standardized, and the insulation construction is not in place.

● Easy to deform and settle, poor thermal stability, large breakage rate, poor thermal insulation effect in the later period, and cannot meet the requirements of the process.

● Poor insulation effect and a significant decrease, leading to the increase of maintenance cost of the insulation project and the increase of equipment operating costs.

● Basic life is only 3 to 5 years, and all of them need to be replaced when they expire.

● Not completely waterproof, easy to absorb water and moisture and corrode pipes.

● For pipes with higher temperature exceeding 100 degrees, the insulation layer needs to be at least> 200mm thick, the heat flux density of the pipe line is high, and the heat energy loss is large.

Benefits of aerogel materials:

● The thermal insulation effect is 2-5 times that of traditional thermal insulation materials, the advantages are more obvious at high temperature, and the life is longer.

● The overall material is water-repellent, which can effectively prevent moisture from entering the pipes and equipment, and has A1 fire resistance.

● Light weight, easy to cut and sew to adapt to various shapes of pipes and equipment insulation, and less time and labor required for installation.

● Less package volume and lighter weight can greatly reduce the transportation cost of insulation materials.

● While maintaining the equipment, it can also play the functions of sound absorption and noise reduction, buffering vibration, etc. to improve the environmental quality and protect the equipment.

● Only 1/2 to 1/5 thickness is required to achieve the same thermal insulation effect of traditional materials. The heat loss is very small and the space utilization rate is high.

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