Heat transfer oil L-QC
Industrial special oil heat transfer oil L-QC overview:
Thermal stability is the most important performance of heat transfer fluids. The thermal stability is different, and the degree of thermal cracking and polymerization in use is also different. Thermal cracking produces small molecules and low boilers, which easily cause the system to generate gas resistance, causing cavitation in the pump, and also cause high evaporation loss and environmental pollution of the oil; thermal polymerization produces macromolecular high boilers, which gradually deposit on The formation of carbon deposits on the heater and piping surfaces will affect the heat transfer efficiency and temperature control accuracy of the system. The LQ series of heat transfer fluids are selected from base oils and additives with excellent thermal stability, so the products have excellent thermal stability.
Oxidation stability is another important performance property of heat transfer fluids. The open system or the expansion tank does not use a nitrogen-enclosed system, and an oxidation reaction occurs at the interface where the oil contacts the air. Generally, at temperatures above 60 ° C, the oil is oxidized by contact with air, and the oxidation product gradually forms colloids and sediments, which adhere to the surface of the heater and the pipe to generate carbon deposits. At the same time, the acid generated by the oxidation reaction will corrode the equipment and cause leakage. LQ series heat transfer fluids are selected with base oil with excellent oxidation resistance and high temperature anti-oxidation and anti-scaling additives, which can inhibit the speed of oxidized sludge generation and the tendency of deposition and scaling, so that the system maintains good heat transfer effect.
The low volatility heat transfer fluid uses the initial boiling point to indicate its volatility. The heat transfer fluid used in the open heating system, such as the initial boiling point is lower than the use temperature, easily causes cavitation of the pump, the operating system generates air resistance, and at the same time causes excessive evaporation loss. The higher initial boiling point of the LQ series heat transfer fluid makes it have a low vapor pressure and volatilization loss, which can ensure the smooth operation of the system.
A better safety heat transfer fluid uses flash point and auto-ignition point to indicate its safety. The flash point is used to indicate the safety performance of the heat carrier in the closed circulation system, while the self-ignition point predicts the tendency of the heat transfer fluid to self-ignite in the air when it leaks under high temperature conditions. LQ series heat transfer fluid has high flash point and spontaneous ignition point, which can ensure the safety of system operation.
Heat transfer performance LQ series heat transfer fluid not only has high thermal stability, but also has excellent heat transfer performance. A suitable viscosity provides high cycle efficiency; a higher specific heat and thermal conductivity can effectively transfer or absorb heat, improving fuel economy and operating efficiency.
Industrial special oil heat transfer oil L-QC main performance:
It is prepared by deep refined mineral oil or synthetic oil as base oil and added with high-efficiency compound additive. It has good oxidation stability and thermal stability, good resistance to high temperature deposition, good low temperature fluidity, high flash point, Lower volatility. Meet the German DIN515221998 specifications.
Industrial special oil heat transfer oil L-QC main use:
L-QB is suitable for open oil tanks, closed systems with or without forced circulation. L: QC, L-QD are suitable for closed systems with forced circulation.
Industrial special oil heat transfer oil L-QC implementation standards;
GB23971-2009 organic heat carrier. It is divided into three varieties: L-QB, L-QC and L-QD. L-QB has two grades of 280 and 300. L-QC has 310 and 320 brands. L QD has brands such as 330, 340, and 350.