APOSTILA SENAI CALDEIRARIA PDF

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Boas práticas instalação de purgadores

Air flow differences entering the steam coils. Carbonic acid deterioration in the condensate drainage system. Locate the steam trap below the lowest 8. The pressure drop results from:. 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 apostia system.

Freezing in cooler climates 5. Three steam heated coils; the steam coils senak separate units, or three separate parts of one air heating system.

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Install one stream trap for each steam heat transfer 2. Process Applications – Group Steam Trapping Practices Similar steam units unit heaters, tracers, steam coils, heat exchangers, etc. The steam coil with the lowest pressure drop will allow steam to flow freely to the steam trap.

Check valves should swnai installed after the steam.

Boas práticas instalação de purgadores

Restriction of flow to the individual heat transfer unit, caused by internal restrictions, such as steam header pipe, tube diameter, or number of tubes. When steam condenses in the condensate drainage line the steam blanketing affect is released and condensate from all coils will be. The steam coils discharge condensate into a common condensate header pipe with one common steam trap for all three steam coils. Assume that each steam coil is supplied with steam at the same pressure and that all the steam coils are the same size.

In colder weather conditions, the steam coils can freeze and fail. The steam trap, sensing steam, will go into the closed position. Martins, Damasceno, Awada – Pronto-socorro Pronto-socorro: The condensate, having only sensible energy, will reduce the steam calderaria performance and in some cases cause water hammer.

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Premature component failures a. Each steam coil will have a different steam pressure drop from the steam inlet to the condensate outlet. One of the most important rules for steam trap 3.

COM allowed to drain. Install a visual indication of steam calderaria perfor- 6. Different fouling factors on the outside of the heat transfer. This action will cause temperature fluctuation, water hammer and may cause freezing in colder climates. Typical problems with group steam trapping: 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.

Temperature control problems 2. Latent energy release and phase change which causes a reduction of occupied area.