Exact(3)
In this work, we used the bulk Fe2O3 with minimum mass fraction purity of 0.99 (Merck).
γ-Fe2O3 nanoparticles with a moderate diameter of 20 nm and minimum mass fraction purity 0.995 were purchased from Nanostructured & Amorphous Materials, Inc. USA.
In the absence of heat losses and preferential diffusion effects, a curved flame with stationary shape and velocity close to those of an open bubble ascending in the same tube is found for values of the fuel mass fraction above a certain minimum that increases with the radius of the tube, while the numerical computations cease to converge to a stationary solution below this minimum mass fraction.
Similar(57)
Radiation losses and a Lewis number of the fuel slightly above unity decrease the final combustion temperature at the flame tip and increase the minimum fuel mass fraction, while a Lewis number slightly below unity has the opposite effect.
The solubility of SO2 in the system of PEG (1) + water (2) presented an extreme minimum at the mass fraction of w1 = 0.50 of 152.3 g m−3 when SO2 in the gas phase was designed at ySO2="5×10−4.
The solubility of SO2 in the system of PEG (1) + water (2) presented an extreme minimum at the mass fraction of w1 = 0.05 of 270.7 g m−3 when SO2 in the gas phase was designated at ySO2="5×10−4.
Detection limits on the basis of Cu were typically in the order of 25 ng, corresponding to a minimum detectable Cu mass fraction of 5 mg kg−1 in a 5-mg nail clipping sample.
HC emissions were minimum from 30% CNG mass fraction because the entire gas fraction could enter the cylinders.
This study describes the performance of micro methanol steam reformers with channel widths optimized using the simplified conjugate gradient method (SCGM), which uses a minimum objective function of the H2 mass fraction standard deviation in channels.
Three fluidization velocities, i.e. initial, minimum and full fluidization velocities, were observed as the TS mass fraction increased from 7%to20%0%, and four hydrodynamic stages were experienced, including the static, segregation, transition and mixing stages, with increasing operational gas velocities.
The results suggest that the operational gas velocity should be in the range of 2.0 5.0 times of the minimum fluidization velocity of the binary mixtures, and less than 7% TS mass fraction should be used in an existing bubbling fluidized bed.
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