Abstract
As a complex thermal critical phenomenon, CHF is widely considered in power system. Nanofluid is regarded as a new potential work fluid because of its excellent heat transfer capacity, the investigation on the CHF of nanofluid boiling is requisite and significative. In present work, the theory about the adsorption of nanoparticle porous deposition layer is proposed and the adsorption force has been analyzed and derived. The force balance model of steam bubble block during nanofluid flow boiling process is established including axial and radial forces. In addition, a code of nanofluid flow boiling is compiled based on the CHF theoretical model of liquid sublayer dry out. After that, the code is validated by the experimental results for the CHF of nanofluid flow boiling under the condition of low mass flux and low pressure. Then, the code is used to analyze the CHF of nanofluid flow boiling under the condition of different mass flux and nanoparticle diameter. The results indicates that the CHF of nanofluid flow boiling can be increased more significantly under the condition of greater mass flux, less nanoparticle diameter and others which can cause the outlet quality to be increased like greater inner diameter and less heating length.
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