Engine : Steam Plants - 427/811
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| Boiler fuel savings gained by the use of an economizer can amount to __________. |
| A) one half percent for each 15°F rise in feed water temperature |
| B) three percent for each 5°F rise in feed water temperature |
| C) one percent for each 10°F rise in feed water temperature |
| D) three percent for each 20°F rise in feed water temperature |
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