In daily production environments, the service temperature of ceramic fiber products is not only influenced by their own chemical composition and production quality but also by various factors such as impurity content, humidity, installation methods, and operational systems.
01 Impact of Impurity Content on Service Temperature
It is evident that higher impurity content leads to a relatively lower proportion of the main components, aluminum oxide and silicon dioxide, in the products, resulting in a decrease in their service temperature. SUNTHERM ceramic fiber products are characterized by their pure white color, low impurity content, excellent fire and high-temperature resistance, and longer service life.
02 Impact of Humidity on Service Temperature
Approximately 90% of ceramic fiber materials consist of pores, which is the primary reason for their exceptional thermal insulation properties. At 0°C, the thermal conductivity of water is 0.52 W/m·K. If the moisture inside the fiber freezes, the thermal conductivity of ice can be as high as 2.32 W/m·K. The thermal conductivity of water is about 20 times that of air (0.0247 W/m·K), while ice is approximately 94 times that of air! Therefore, in insulation projects, it is essential to strictly control the humidity of the environment where ceramic fiber products are used to ensure their thermal insulation effectiveness. During the rainy season or in humid environments, the use of SUNTHERM high-temperature hydrophobic blankets is recommended, with a hydrophobic rate of up to 99%, effectively mitigating the impact of moisture on the thermal conductivity and service temperature of ceramic fiber.
03 Impact of Installation Methods on Service Temperature
Generally, ceramic fiber exhibits lower thermal conductivity when laid flat compared to stacked installation. The service temperature for flat-laid installation can be approximately 50°C higher than that for stacked installation.
04 Impact of Operational Systems on Service Temperature
Operational systems are mainly divided into continuous operation and intermittent operation. Typically, the service temperature of continuously operating furnaces is about 50°C lower than that of intermittently operating furnaces.
With a 32-year history, SUNTHERM is a professional ceramic fiber manufacturer specializing in production, research and development, and engineering development.
