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Unformatted text preview: of water a negative water column of 10 m at 200C. When the pressure in a
pipe drops below this value, water will be vaporized locally to form vapor pockets (cavitation)
that seperates the water in the pipes. These water pockets collapse in region s of higher
pressure downstream. The action of vapor collapse is not violent, causing vibrations and
sound that can greatly damage the pipeline.
2 Negative pressure should not be allowed exceed approximately 2/3 of the barometric head in
any section of the pipeline (7-8 m).
Example 8.1. Calc...
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This document was uploaded on 02/07/2014.
- Spring '14