SCV耦合傳熱特性實驗研究與數值模擬
責任編輯：cnlng 瀏覽：518次 時間： 2024-03-28 09:41:24
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摘要:摘要浸沒燃燒式汽化器(SCV)是液化天然氣(LNG)接收站中一種必不可少的換熱設備,主要通過水浴系統作為中間介質實現煙氣與LNG之間的熱量傳遞。搭建一套完整的SCV流動換熱實驗平臺,對其內部復雜的傳熱特性進行研究�？梢暬瘜嶒灲Y果揭示了汽化器內部一些獨特的流體動力學..
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摘要浸沒燃燒式汽化器(SCV)是液化天然氣(LNG)接收站中一種必不可少的換熱設備,主要通過水浴系統作為中間介質實現煙氣與LNG之間的熱量傳遞。搭建一套完整的SCV流動換熱實驗平臺,對其內部復雜的傳熱特性進行研究�？梢暬瘜嶒灲Y果揭示了汽化器內部一些獨特的流體動力學現象(局部水浴結冰等),同時通過建立的氣液兩相混合物與跨臨界LNG耦合傳熱計算模型得到了換熱管束內外局部流體溫度和局部傳熱系數分布曲線,并分析了LNG進口壓力、LNG入口速度、初始水位高度以及煙氣進氣量對NG出口溫度和水浴溫度的影響規律。研究成果能夠為SCV國產化設計提供重要參考。Submerged combustion vaporizer is indispensable heat exchanger equipment for liquefied natural gas（LNG） receiving terminals, it mainly utilizes water bath system as intermediate media to achieve heat transfer between flue gas and LNG. In this work, an unabridged experimental apparatus is built to study the complex heat transfer characteristics of it. Experimental results reveal some unique fluid dynamic phenomena inside SCV system（local water bath freezes）. Meanwhile, the simulated model is established for coupled flow and heat transfer process between two-phase mixture and trans-critical LNG. The influences of inlet LNG pressure, inlet LNG velocity, static water height, flue gas flux on the NG outlet temperature and water bath temperature are analyzed. The outcomes can provide some important guidance to localization design of SCV. 基金中央高�；究蒲袠I務費專項資金項目(DUT16QY29)~~ 關鍵詞浸沒燃燒式汽化器 LNG 實驗 流動 傳熱 水浴溫度 數值模擬submerged combustion vaporizer LNG experiment flow heat transfer water bath temperature numerical simulation |
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