értekezés - Szent István Egyetem

Based on the energy demand experiments carried out on the vacuum sewerage system pilot
plant test rig I ascertained that the specific energy consumption increases with the increase
of the vacuum level kept in the vacuum vessel. The optimal domain for the operation of
vacuum sewerage systems is at the air/water ratio of the lowest maintainable vacuum level
in between the static vacuum loss eliminating and the flooding boundary curves.
I suggest that the vacuum vessel pressure level, the air/water ratio and the specific energy
consumption be determined at the design phase of vacuum sewerage systems.
Based on the above listed findings regarding the hydrostatics of vacuum sewerage systems
I worked out a software capable of designing optimal longitudinal vacuum main profiles
and with its help I designed the vacuum main profiles of the largest vacuum sewerage
system in the world currently being built (Sultanate of Oman, Seeb project, 215km of
vacuum main pipes).
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