In a vacuum exhaust system, sealing steam to the turbine shaft labyrinth seals must be admitted to avoid loss of vacuum.

在真空排气系统中，必须引蒸汽到汽轮机主轴迷宫式密封，以防真空损失。

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The steam turbine drivers are warmed by slowly opening the exhaust valves.

汽轮机驱动器通过缓慢打开排气阀加热。

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A new online model for calculating the exhaust enthalpy was proposed aiming at the limitation of existing online calculation model for calculating the enthalpy of steam turbine lp exhaust hood.

针对现有的汽轮机低压缸排汽焓在线计算模型存在一定的局限性，提出了一种排汽焓在线计算新模型。

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To supply the extra juice, utilities turn on inefficient single-cycle gas turbines, which turn 25% of the fuel's energy into electricity, as opposed to 45% for combined-cycle plants that use turbine exhaust to make steam to run a second generator.

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Combined-cycle gas turbines, which use hot exhaust gases from one turbine to generate steam to turn a second one, can transform 6, 800 Btu of gas into a kilowatt-hour of electricity, enough to light one lightbulb for ten hours.

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