為什么鍋爐給水溫度降低，汽溫反而升高?

??2022-08-05????????

為了提高整個電廠的熱效率，發(fā)電廠的鍋爐都裝有給水加熱器，在給水栗以前的加熱器稱為低壓加熱器，在給水泵以后的稱為高壓加熱器。給水經(jīng)高壓加熱器后，給水溫度大大提高。例如，中壓鍋爐給水溫度大都加熱到172℃，高壓爐一般加熱到215℃,超高壓鍋爐給水加熱到240℃，亞臨界壓力鍋爐給水加熱到260℃。在運行中由于高壓加熱器泄漏等原因，高壓加熱器解列時給水經(jīng)旁路向鍋爐供水。鍋爐的給水溫度降低后，燃料中的一部分熱量要用來提高給水溫度。假如蒸發(fā)量維持不變，則燃料量必然增加，爐膛出口煙氣溫度和煙氣流速都要提高，過熱器的吸熱量增加，蒸汽溫度必然要升高。

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国产精品网址-国产精品无-国产精品无码-国产精品无码AV-国产精品无码白浆高潮-国产精品无码不卡-国产精品无码无码-国产精品无码在线

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為什么鍋爐給水溫度降低，汽溫反而升高?

鄭鍋股份