Can steam at 280 degrees and 1.3 MPa be used for heat tracing?
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As the title suggests, the condensate pressure is around 0.8 MPa; can a steam trap be used for instrument heating?
It’s not very suitable for heat tracing, as the temperature is too high.
That’s okay too; it just tests the heat tracing installation. If it is too close to the pressure tap, it may cause inaccurate readings by the instrument, especially with low-boiling-point media. First, wrap the pressure guiding tube with a layer, then place the heat tracing against the insulation layer, and finally add another layer of insulation on the outside. 280 degrees of thermal radiation is more than enough
No, it is a waste of resources, and it can also cause the medium being tested to vaporize, thereby affecting the accuracy of the measurements. Generally, low-pressure steam at 0.6 MPa is used for heating
Sure, it was explained very clearly on the second floor. Whether to install heat tracing depends on the temperature in your area; in the south, it is generally not necessary, while it is required in the cold northern regions. Required outdoors, not required indoors. The main goal is to avoid safety hazards caused by ice formation in the condensate inside the pressure guiding pipe due to cold weather.
Yes, it’s possible to use the method from the 3rd floor for providing heat tracing; the thermal radiation will be sufficient. As long as the components are not placed too close to each other, it won’t affect the accuracy of the measurements
This post was last edited by Pan Dora on 2016-3-10 at 20:17. Our company uses 2.5-kilogram steam for heat tracing. Because the units are too tall, their hot water heating capacity is insufficient; this is especially true in the petrochemical industry, where facilities are generally located outdoors and the towers are very tall. Regarding instrument heating, it should not result in high energy consumption for steam. The key issue is that subsequent maintenance is rather troublesome; high-pressure steam safety is one aspect, and eye sand is another problem that often arises. If it’s not possible to cut off the steam at that time, things will get difficult.
The superheat level is too high; after the heating process, steam enters the condensate system (since the instrumentation itself does not require that much heat). This leads to an increase in pressure in the water system, which can ‘trap’ users with a pressure of 0.8 bar, and it may also cause water hammer effects. Of course, with a larger water system, the impact might be smaller. @jiaguoyun @Big Horse with a Big Bow