Heating issues for pipeline systems
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This post was last edited by hhit2003 on 2009-9-19 at 12:27 :) We invite enthusiastic discussions on the following issues: The pipeline system requires insulation at 50 degrees; what temperature should the hot water used for pipeline heating be (the company already has hot water available)? Which parameters should be used to determine the temperature of the heating water? Compared to electric heating, what are the advantages and disadvantages of hot water heating?
This post was last edited by qq375170364 on 2009-10-13 09:40. Electric heating provides more precise temperature control; the temperature of the heating pipe is generally determined by the ambient temperature, the temperature of the medium, and the number of heating pipes used. You can refer to the SH/3040 standard for pipeline heating
Hot water at 80-90 degrees can be considered; if 70 degrees is used, it is necessary to ensure proper insulation of the flange and other connection sections, otherwise freezing may occur due to inadequate insulation at these joints.
Hot water above 80°C will meet the requirements.
Which parameters can be used to determine the temperature of the heating water? First, the temperature of the material should be between 45 and 50 degrees; it is sufficient to ensure that the material does not solidify (its melting point is 42 degrees, so maintaining a temperature above 45 degrees is sufficient). Where can one find the \"SH/T3040-2002 SH/T 3040-2002 Standards for the Design of Heat Tracing and Jacketed Pipes in Petrochemical Industries\"?
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This post was last edited by hhit2003 on 2009-9-21 at 15:53. Thank you, neighbor above! The proposed solution, as summarized, is as follows: the ambient temperature is -5 degrees; the material pipelines have a diameter of DN40–50, while the accompanying pipes have a diameter of DN15. There is one such accompanying pipe, which is tied at the lower end. The effective length of the heating pipe is 60 meters (with hot water pressure of 0.3–0.5 Mpa). The thickness of the insulation material is 40–50 mm. Heating is provided from the lowest point to the highest point, and a vent is installed at the highest point. The system includes hot water distribution stations and hot water return stations.
Generally, 80 to 95 degrees is sufficient
If electric heating is used, opting for domestic heating tapes is cheaper than using steam or hot water; it’s also more convenient, and installation and maintenance are much simpler. If you’re interested, you can take a look here: http://www.bjjiahong.com/faq/faq.html – some common questions that I’ve summarized