| 11. | With the appropriate controls, economizers can be used in climates which experience various weather systems.
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| 12. | In an HRSG, water passes through an economizer, then a boiler and then a superheater.
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| 13. | Economizers were eventually fitted to virtually all stationary steam engines in the decades following Green's invention.
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| 14. | Economizers are commonly used as part of a heat recovery steam generator in a combined cycle power plant.
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| 15. | This economizer preheats the steam generator feedwater at the steam generator inlet using the lowest-temperature primary coolant.
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| 16. | Economizer circuits are nearly always applied on direct-current contactor coils and on large alternating current contactor coils.
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| 17. | External stainless steel economizers can be retrofitted to non-condensing boilers to allow them to achieve condensing efficiencies.
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| 18. | Some systems include an " economizer mode ", which is sometimes called a " free-cooling mode ".
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| 19. | Modern data centers try to use economizer cooling, where they use outside air to keep the data center cool.
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| 20. | Finally, there was a small Electric Runabout, the " Economizer, " which was a personnel carrier only.
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