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    蒸發沸騰傳熱在許多工業和技術領域中的應用非常曾遍

     

    研究發現,流化床閃蒸器的竹內觀速度為0.10.2時,其傳熱系數相當于普通換熱器觀速度為1.8時所能達到的水平,他認為這是山廠固休粒廣的引入破壞了流體的邊界層所致幻虹⑶等人對流化床換熱器進行進步的研究,為7控制固體粒廣在宵束中的均勻分布足流化床換熱器穩定操作的關鍵,他對普通換熱器進行了改造以適應含有固體粒子時的操作幻肛還指出分布板的設計分布板的壓降和延伸管的設計是流化床穩定操作的關鍵。人們采用了內循環結構,提出了內循環流化床換熱器。

    Design is the design of distributed operation phantom study found that fluidized bed flash evaporator Takeuchi rate from 0.1 to 0.2, the heat transfer coefficient is equivalent to ordinary for heat exchanger rate is 1.8 can reach the level he thinks this is mountain plant in solid particle wide introduction of destruction of the fluid boundary layer induced by Hong et al. Fluidized bed heat exchanger for progress in the study of 7 control of solid particle widely in night beam of uniform distribution of fluidized bed heat exchanger for stable operation of the key, he of ordinary heat for the transformation to adapt to the containing solid particles of magic anus also pointed out that the distribution in the plate pressure drop and extension tube fluidized bed stable operation of the key. The inner circulation structure was adopted, and the inner circulating fluidized bed heat exchanger was proposed.

    流化床換熱器無論形式如何變化,都有個共同的特點,即加熱管中始終為液固兩相,所以上述的流化床換熱器只能稱為液固流化床換熱器。在這類換熱器中沒有相變產生。當換熱器中有相變產生時,該換熱器稱為蒸發器。蒸發沸騰傳熱在許多工業和技術領域中的應用非常曾遍。迮蒸發沸騰過程中,代熱壁面上的結垢比無相變時嚴重得多,如何解決蒸發器中傳熱壁面上的結垢,是長期未能解決的難。

    There is a common characteristic in the fluidized bed heat exchanger, which is the liquid solid two phases in the heating pipe, so the fluidized bed heat exchanger can only be called the liquid solid fluidized bed heat exchanger. There is no phase transformation in this kind of heat exchanger(www.yybnkj.com). When there is a phase change in the heat exchanger, the heat exchanger is called the evaporator. Evaporation boiling heat transfer has been applied in many industrial and technical fields. Zhongze evaporation boiling process, on behalf of the thermal wall fouling than the phase transition is much more serious, how to solve the fouling of the evaporator wall heat transfer is to be solved for a long time to.

    在沸騰傳熱系統中加入固體粒子的研究,是從池沸騰傳熱開始的。將固體粒子加入池沸騰的水,發現固體粒子在加熱面處的存在,使汽泡更易躍離壁面。后來此和,證實了在加熱壁面處固體粒子以形成了汽體通道,以及壁而上的汽泡和形成的1然對流異致面處的粒+層流化。閌體粒子對池沸騰傳熱的影響,還有些學者進行了研究,得出了不同的結果。流動沸騰傳熱比池沸騰傳熱要復雜衍多,在蒸發器和再沸器中究很少。

    In the boiling heat transfer system, the research of solid particles is the starting of the pool boiling heat transfer. The solid particles into the pool boiling water, found that the presence of solid particles in the heating surface, so that the bubble is more likely to jump off the wall surface. Later, it was confirmed that the solid particles in the heated wall were formed by the formation of the vapor passage, and the wall of the bubble and the formation of the 1 natural convection at the surface of the particle + laminar flow. When the particle effect on pool boiling heat transfer, some scholars have studied and obtained different results. Flow boiling heat transfer is more complicated than that of pool boiling heat transfer.

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