Optional heat transfer oil considerations

Date: 2018-11-11 Source: Shanghai JiuxingViews:Loading...

Before selecting a heat transfer oil and replacing it with a new one, if the system is already coking, carefully clean the system. If conditions permit, you should also carefully identify the cause of the coking and correct the problem equipment components.

(1) Confirm the authenticity of the maximum use temperature of the heat transfer oil - test at the highest use temperature to see if the appearance is transparent, no suspended matter and sediment, and the total deterioration rate is not more than 10%.

(2) Confirm the evaporability and safety of the heat transfer oil - the flash point of the opening meets the requirements of the standard index. The higher the temperature of the initial boiling point, the less easily the heat transfer oil is vaporized. The more uniform the temperature of the system, the smaller the amount of heat transfer oil. The longer the service life, the less the heat-conducting oil with a high self-ignition point is less likely to catch fire when it is exposed to air, and the safety is also higher.

 (3) Confirm the depth of processing of heat-conducting oil - the appearance is light yellow transparent liquid, good storage stability, no discoloration or precipitation after illumination. The residual carbon is not more than 0.1%, and the sulfur content is not more than 0.2%.

 (4) Confirm the low temperature fluidity of the heat transfer oil - select the appropriate low temperature performance according to the ambient temperature of the heat transfer oil used in the area and equipment. The kinematic viscosity (0 ° C or lower) at relatively low temperatures is relatively low.

 (5) Confirm the heat transfer performance of the heat transfer oil - with lower viscosity and larger density, the smaller the temperature difference between the oil furnace outlet temperature and the equipment use temperature, the faster the heat transfer oil flow rate, and the superior heat transfer performance of the heat transfer oil.


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