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Steam Tube

In Austria common name for the ventilation shaft, which leads from the wine cellar for the purpose of ventilation up into the open air; the end is called roof pipe (see in the picture). The steam pipe was also used to extract the fermentation gas(carbon dioxide) produced during fermentation. The fermentation gas was also discharged via the so-called fermentation grid. However, both devices are only conditionally suitable because the toxic carbon dioxide is heavier than air and collects at the bottom or at the lowest point

Dampfröhre - zwei Dachpfeifen

In order to determine the degree of fermentation gas present, the highly uncertain method of candle sampling was used. Today, the carbon dioxide is extracted via exhausters (deaerators) and led outside or in large cellars, also in containers, and used. The wine cellar was a popular meeting place for friends and like-minded people, where discussions, philosophizing and politicizing were held over a good glass of wine, and where people "gossiped" about other (absent) people. It is said to have happened again and again that some explosive conversations were overheard through the roof pipe or opening. See also under customs in viticulture

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