| 摘要 |
A power-producing system includes a working fluid cycle in which the fluid is boiled, expanded in a plurality of turbines exhausting at different pressures, condensed with air-cooled water and returned to the boiler. A reduction in the heat exchange surface area of the condensing portion of the system is achieved when a separate stream of cooling water flows through each of several condensers operating at a temperature appropriate for condensing the vapor from its respective turbine. A reduction in the heat exchange surface area of the ambient air/cooling water contact is achieved by passing each cooling water stream through its own cooling tower flow path constructed to provide the necessary cooling for that stream. A single cooling tower structure may be modified internally to provide plural flow paths separate from each other.
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