APOSTILA SENAI CALDEIRARIA PDF

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Different fouling factors on the outside of the heat transfer.

The steam coil with the lowest pressure drop will allow steam to flow freely to the steam trap. The pressure drop results from:. 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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In colder weather conditions, the steam coils can freeze and fail. 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. Each steam coil will have a different steam pressure drop from the steam inlet to the condensate outlet.

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COM allowed to drain. Typical problems with group steam trapping: Freezing in cooler climates 5. The steam trap, sensing steam, will go into the closed position. sneai

Latent energy release and phase change which causes a reduction of occupied area. Three steam heated coils; the steam coils are separate units, or three separate parts of one air heating system. 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.

Carbonic acid deterioration in the condensate drainage system. Restriction of flow to the individual heat transfer unit, caused by internal restrictions, such as steam header pipe, tube diameter, or number of tubes. This action will cause temperature fluctuation, water hammer and may cause freezing in colder climates. Install a visual indication of steam trap perfor- 6.

Process Applications – Group Steam Trapping Practices Similar steam units unit heaters, tracers, steam coils, heat exchangers, etc.

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Premature component failures a. Check valves should be installed after the steam. Locate the steam trap below the lowest 8.

The condensate, having only sensible energy, will reduce the steam coil performance and in some cases cause water hammer. Install one stream trap for each steam heat transfer 2.

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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.

Martins, Damasceno, Awada – Pronto-socorro Pronto-socorro: Temperature control problems 2. One of the most important rules for steam trap 3. Air flow differences entering the steam coils.