Isolation fluid heating issue
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If the isolation fluid contains water, heat tracing is required. I was wondering if it would be possible to use a different type of insulating fluid, such as silicone oil; in that case, would there be no need for heat tracing anymore?
Silicone oil also has temperature limits; it must not be below –15°C. Glycerin can withstand lower temperatures, but it cannot handle high temperatures
Silicone oil is generally used as a isolation fluid; high-temperature silicone oil, fluorinated oils – high-temperature silicone oil should work fine. Water, on the other hand, probably won’t do
Reply 1# youyoufifa: Use a solution of ethylene glycol and water in a 1:1 ratio; its specific density is 1.068； Boiling point: 107℃ ； Freezing point: -35.6℃ ； Flash point: Does not ignite.
50% ethylene glycol-water is used, so does that mean heating is not required?
OP, what we usually use is a mixture of ethylene glycol and water in a 1:1 ratio, which works very well at low temperatures. Additionally, a mixture of ethylene glycol and water can also be used for low-temperature cooling.
Have you provided heat tracing for the isolation fluid? Even if the isolation fluid does not condense, what about providing heat tracing if the medium does condense?
In principle, the isolation fluid does not require heating. However, since it is easily displaced when in contact with the medium being measured, it is recommended to refill the isolation fluid tank regularly or to apply selective heating, depending on the frequency of displacement of the isolation fluid and the properties of the medium being measured. In addition to being filled with new isolation fluid on a regular basis, the isolation fluid tanks used by our company to separate steam, fresh water, alkali solutions, and heavy viscous oils are also equipped with heating systems.
In principle, the isolation fluid does not require heating. However, since it is easily displaced when in contact with the medium being measured, it is recommended to refill the isolation fluid tank regularly or to apply selective heating, depending on the frequency of displacement of the isolation fluid and the properties of the medium being measured. In addition to being filled with new isolation fluid on a regular basis, the isolation fluid tanks used by our company to separate steam, fresh water, alkali solutions, and heavy viscous oils are also equipped with heating systems.
If you need advice regarding heat tracing, please contact QQ 453242964
We use silicone oil here. I’m in the northwest, where the lowest temperatures in winter range from minus 20 to minus 30 degrees; silicone oil works fine in such conditions