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实验测定了有油和无油工况下,CuO纳米颗粒在CuO-R113纳米制冷剂沸腾过程中的迁移量。结果表明:在CuO-R113纳米制冷剂沸腾过程中,无论是有油还是无油,CuO纳米颗粒的迁移量都随CuO纳米颗粒质量和制冷剂R113质量的增加而增加,迁移率随CuO纳米颗粒体积分数的增加而减小;油存在时,CuO纳米颗粒的迁移量和迁移率都低于相同情况下无油时CuO纳米颗粒的迁移量和迁移率。
The migration of CuO nanoparticles in the boiling process of CuO-R113 nano-sized refrigerants under oil and oil-free conditions was experimentally determined. The results show that the migration of CuO nanoparticles increases with the mass of CuO nanoparticles and R113, both with or without oil in the boiling process of CuO-R113 nanofluids. The migration rate increases with the CuO nanoparticles The migration and the mobility of CuO nanoparticles in the presence of oil were both lower than those of CuO nanoparticles in the same situation without oil migration.