高考申論題
112年
[輪機技術] 輔機
第 五 題
五、請將下列英文譯成中文:(20分)
An economizer is a simple heat exchanger that consists of a bank of tubes. These tubes are connected with an inlet and outlet header located in a relatively cool gas temperature zone beyond the main generating bank of boiler. The additional heat is supplied to the feedwater from the economizer by cooling the flue gas. If oxygen is contained in the feedwater to the economizer, the oxygen is released when the external heat is applied. This may result in the tube and header corrosion. The air heaters cool the hot flue gases by the incoming combustion air instead of the feedwater in economizer.
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作答本題需精準掌握鍋爐系統的專業術語,如「economizer(省煤器)」、「header(聯箱/集管)」、「flue gas(煙氣)」等。翻譯時除了直譯,務必採用輪機工程實務慣用的詞彙(例如將 generating bank 譯為蒸發管束),並留意前後文邏輯,以呈現流暢且專業的中文論述。
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【譯文】 省煤器是一種簡單的熱交換器,由管束(管排)所組成。這些管子連接至進水與出水聯箱,且配置於鍋爐主蒸發管束之後、溫度相對較低的煙氣區域中。省煤器藉由冷卻煙氣,將額外的熱量供應給鍋爐給水。若進入省煤器的給水中含有氧氣,當外部受熱時,氧氣便會被釋放出來。這可能會導致管路與聯箱產生腐蝕。空氣預熱器則是利用導入的燃燒用空氣來冷卻高溫煙氣,而非如同省煤器般使用給水來進行冷卻。 【重點詞彙/句型】
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