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Different fouling factors on the outside of the heat transfer. Check valves should be installed after the steam. The steam coils discharge condensate into a common condensate header pipe with one common steam trap for all three steam coils.

Boas práticas instalação de purgadores

The steam trap, sensing steam, will go into the closed position. Steam in the discharge line from the steam coil with the lowest pressure drop will prevent proper condensate drainage, due to the steam pressure in the condensate drainage system.


There are a few cases where grouping steam components to one steam trap is acceptable, but there are very few process applications where group steam trapping is acceptable. The condensate, having only sensible energy, will reduce the steam coil performance and in some cases cause water hammer.

Carbonic acid deterioration in the condensate drainage system. Martins, Damasceno, Awada – Pronto-socorro Pronto-socorro: Process Applications – Group Steam Trapping Practices Similar steam units unit heaters, tracers, steam coils, heat exchangers, etc. Install a visual indication of steam trap perfor- 6.

Freezing in cooler climates 5. Air flow differences entering the steam coils. When steam condenses in the condensate drainage line the steam blanketing affect is released and condensate from all coils will be.

In colder weather conditions, the steam coils can freeze and fail. This action will cause temperature fluctuation, water hammer and may cause freezing in colder climates. Each steam coil will have a different steam pressure drop from the steam inlet to the condensate outlet.

Assume that each steam apostilw is supplied with steam at the same pressure and that all the steam coils are the same size. Typical problems with group calseiraria trapping: One of the most important rules for steam trap 3. Latent energy release and phase change which causes a reduction of occupied area. Locate the steam trap below the lowest 8. Restriction of flow to the individual heat transfer unit, caused by internal restrictions, such as steam header pipe, tube diameter, or number of tubes.


Boas práticas instalação de purgadores

Premature component failures a. The steam coil with the lowest pressure drop will allow steam to flow freely to the steam trap. Temperature control problems 2. The pressure drop apostilla from:.

Three steam heated coils; the steam coils caldeirria separate units, or three separate parts of one air heating system. COM allowed to drain. Install one stream trap for each steam heat transfer 2.