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- W2357188046 abstract "An experimental study of the influence of pressure on Umf and bed expansion height by the photographing with a camera was carried out in a fluidized bed of 60 mm i.d.in the range of operating absolute pressure 0.1 MPa~1.5 MPa with two kinds of different size particles.Experimental results indicate that for the polystyrene(Ps) particle with a larger size,Umf changes with p-0.3,and for the sand particle with a smaller size,Umf changes with p-0.21.An empirical equation about Umf is proposed based on the experimental data:U_(mf)=μ/(d_pρ_g){[(34.15)~2+0.05916×(d_p~3ρ_g(ρ_s-ρ_g)g)/μ~2]1/2-34.15} It is found that the bed expansion height increases with the increasing of gas velocity,and increases with pressure for fixed value of U-Umf,when the pressure exceeds 0.7 MPa,the influence of pressure on the bed expansion height is weakened.For the polystyrene(Ps) particle,U-Umf decreases with the increasing of pressure for fixed value of H/Hmf.When H/Hmf=1.4～1.6,U-Umf varies with p-0.52～p-0.58." @default.
- W2357188046 created "2016-06-24" @default.
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- W2357188046 date "2008-01-01" @default.
- W2357188046 modified "2023-09-23" @default.
- W2357188046 title "Experimental study on flow characteristics of fluidized bed at elevated pressure" @default.
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