In MAR, HOT SALES, 16 tons 1260 Ceramic Fiber Blanket are packed for delivering to our customer in BIH.High quality insulating products with good packing.
Mechanism of weakening heat dissipation of ceramic fiber blankets
Generally speaking, the heat dissipation methods of thermal equipment mainly include conduction, convection and radiation. With its unique structure, the ceramic fiber blanket weakens the three heat dissipation methods and reduces the heat loss. Today, I will take you to understand the three mechanisms of reducing heat loss!
Weakening of conduction heat dissipation
The heat of the heat source must first pass through the ceramic fiber blanket, and the conduction and heat dissipation can only be carried out in the direction of the fiber rod, and the fibers of the blanket have no directionality, which virtually prolongs the heat transfer path and weakens the heat conduction. In addition, the porosity of the ceramic fiber blanket is 93%, and 80% of the contact between fibers is point contact. The point contact and high porosity further weaken the conduction of heat and increase the thermal resistance of conduction and heat dissipation.
Weakening of convective heat dissipation
The porosity of the ceramic fiber blanket is very high, and the gas is divided by the fibers into many small stomata that are almost stationary, and the pressure in the dispersed porous silo is constant, and the air pressure will form a dense solid shield together with the solid fibers. (forming a shielding air pressure), which hinders the intrusion of thermal airflow and weakens heat dissipation.
Attenuation of radiative heat dissipation
The ceramic fiber itself is a white, smooth reflector, which can effectively reduce heat radiation.
Ceramic fiber blankets are widely used in the thermal insulation layer of heating furnace lining, high temperature flue, pipeline and various thermal equipment due to their superior thermal insulation advantages.
Ceramic Fiber Blanket Compression Ratio and Its Application
Compression ratio
The compression rate of ceramic fiber blanket generally refers to the compression rate in the thickness direction of ceramic fiber, and the compression rate of ceramic fiber has no effect on its own physical and chemical properties.
The compression rate of the ceramic fiber blanket is determined by the soft characteristics of the ceramic fiber blanket itself. The size of the compression rate is related to the volume density of the ceramic fiber blanket. When a certain external force is applied, the ceramic fiber blanket will be compressed by about 1/5 to 1/3. Taking a ceramic fiber blanket with a density of 128kg/m³ as an example, the maximum can be compressed by about 1/2, that is to say, a standard 128 density ceramic fiber blanket with a thickness of 50mm can be compressed to a thickness of 25mm with a strong force.
Compression ratio application
The high-temperature equipment that has been fixed on the inner and outer layers is used for insulation, and it is filled with hard rigid materials such as ceramic fiberboard. Generally, there will be gaps. If the fixation is not good, it will shake with the hot air. This problem can be better solved.
High temperature equipment thermal insulation gaskets, high temperature pipeline thermal insulation gaskets, high temperature flange sealing gaskets, etc. will be better made of ceramic fiber blankets.
The backing layer of the kiln insulation ceramic fiber lining is used for staggered laying of two layers of 30mm ceramic fiber blankets and compressed into a 50mm insulation layer; the gap compensation between the rows of ceramic fiber modules is folded and compressed into 30mm by two layers of 20mm ceramic fiber blankets. application.
The center hole of the ceramic fiber module is filled with the help of the compressibility of the ceramic fiber blanket.
