Should traps be installed in underground trenches for northern heating?
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Should a drain valve be installed in the underground trench for northern heating? How can it be placed reasonably if needed?
In horizontal pipes, steam traps should generally be installed every 30–50 meters; the smaller of these values should be used for areas with lower pressure； It should also be installed at the pipe turns, and this includes the use of compensators, dirt removers, bypasses, etc.
Steam trap: Function: The purpose of a steam trap is to remove water from the steam stream, discharge the condensed water, and prevent steam from escaping. Recommended Table for Safety Factor K of Steam Traps Sequence Number Heating System Usage Conditions Recommended Value of Safety Factor K 1 Steam transmission pipelines: every 100 meters, at the lowest point of the pipeline, at the end of the pipeline, and in front of control valves 3 2 Process heating pipelines: traps should be installed every 100–200 meters on average 3 3 Heat exchangers, heaters, dryers 2 4 Secondary evaporation tanks 3 5 Heating systems (radiators, convective radiators) 3–4 6 Traps for evaporators in lithium bromide refrigeration equipment 2–3 7 Steam distribution cylinders, steam-water separators: traps should be installed at the bottom of these devices 3
The underground ducts here are not equipped with traps. All traps are installed on the ground.