| 摘要 |
Minimalized energy use and operational cost are provided by the method and apparatus of this invention for liquid distribution system in which pumped liquid is charged to a pneumatically pressurized storage tank, filling it to an optimum level for subsequent distribution of incremental quantities of liquid drawn from the tank, as typical for well water systems of rural residiences. A pneumatic pressure-head of nominally constant mass is maintained in a liquid storage tank during intermittent operations of filling and of discharging liquid from the storage tank, thereby neccesitating minimal venting or charging of air for mainting constancy of pneumatic mass in the tank.
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