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Boas práticas instalação de purgadores
The steam coil with the lowest pressure drop will allow steam to flow freely to the steam trap. Steam in the discharge line from the caldeiearia coil with the lowest pressure drop will prevent proper condensate drainage, due to the steam pressure in the condensate drainage system.
The pressure drop results from:. Three steam heated coils; the steam coils are separate units, or three separate parts of one air heating system. Different fouling factors on the outside of the heat transfer.
Assume that each steam coil is supplied with steam at the same pressure and that all the steam coils are the same size.
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COM allowed to drain. Typical problems with group steam trapping: Install a visual indication of steam trap perfor- 6. In colder weather conditions, the steam coils can freeze and fail.
The condensate, having only sensible energy, will reduce the steam coil performance and in some cases cause water hammer. The steam coils discharge condensate into a common condensate header pipe with one common steam trap for all three steam coils.
Each steam coil will have a different steam pressure drop from the steam inlet to the condensate outlet. When steam condenses in apostil condensate drainage line the steam blanketing affect is released and condensate from all coils will be. 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.
Air flow differences entering the steam coils. Locate the steam trap below the lowest 8. Freezing in cooler climates 5. Premature component failures a.
Latent energy release and phase change which causes a reduction of occupied area. Carbonic acid deterioration in the condensate caldeirqria system. The steam trap, sensing steam, will go into the closed position.
Install one stream trap for each steam heat transfer 2. Check valves should be installed after the steam. Process Applications – Group Steam Trapping Practices Similar steam units unit heaters, tracers, steam coils, heat exchangers, etc.
Temperature control problems 2.
Restriction of flow to the individual heat transfer unit, caused by internal restrictions, such as steam header pipe, tube diameter, or number of tubes. One of the most important rules for steam trap 3. Martins, Damasceno, Awada – Sehai Pronto-socorro: This action will cause temperature fluctuation, water hammer and may cause freezing in colder climates.