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Clearnote
Q&A
Undergraduate
Natural Science
求解🙏🙏🙏
Natural Science
Undergraduate
almost 5 yearsago
RAY
求解🙏🙏🙏
3. 若一牛奶(比熱為3.8 kJ/kg℃)以0.8 kg/s 的質量流速,流經一逆流式管 式熱交換機進行巴斯德殺菌,其入口溫度為5℃,出口溫度為75℃。則殺菌 此牛奶需吸熱多少?而熱水(比熱為4.18 kJ/kg℃)流速為1.2 kg/s 的入 口溫度為90℃,則出口溫水的溫度為何?而log-mean temperature difference (AT)為何?若管內直徑為4cm,Ui 為10 kW/m°C,則此管式 熱交換機的熱交換面積為何?其管長為何?(20 分)
食品工程學
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