Yi-Chun Shi - Academia.edu (original) (raw)
Papers by Yi-Chun Shi
Chemical Engineering Science, 2009
An analytical solution is derived to predict the axial solid transport in rotary kilns. With it t... more An analytical solution is derived to predict the axial solid transport in rotary kilns. With it the local depth of the solid bed can be calculated conveniently in dependence on the kiln geometry (diameter and length), the operational variables of the kiln (rotation speed, feed rate and inclination), the property of the material (angle of repose) and the height of the discharge dam. The depth profile of the solid bed is found to depend only on three dimensionless variables. Comparisons demonstrate that the deviation of the analytical result from the numerical result is negligibly small. Good agreement was found between the analytical solution and measured values.
The present invention relates to a laundry care device (100) comprising a tub (105) for receiving... more The present invention relates to a laundry care device (100) comprising a tub (105) for receiving wash liquor, arranged one in the tub (105) wash basket (107) for accommodating laundry (109) and with the solution container (105) fluidly connected deodorizing (111) for deodorizing the laundry (109), said deodorizing apparatus (111) having an ozone generating element (113) for generating ozone and a mist generating means (115) for generating a water mist, said mist generation means (115) a fluid reservoir (141) for receiving fluid. The deodorizing apparatus (111) comprises a foam detecting means (151) for sensing foam in the fluid container (141), wherein the foam detecting means (151) comprises an electrical measuring element (153) which is in contact with fluid in the fluid container (141), wherein the electrical measuring element (153) is configured to detect an electrical measured value of the fluid in the fluid container (141), and wherein the foam detecting means (151) is adapte...
Granular Matter, 2011
The axial discharging velocity of the particles was experimentally investigated at the discharge ... more The axial discharging velocity of the particles was experimentally investigated at the discharge end of two rotary kilns with 400 and 250 mm internal diameter, respectively. Sand, glass beads and clinker were used as experimental materials. A physical method without using imaging technology was developed to measure the axial discharging velocity based on the discharge behavior. The mass flow and the rotational speed of kiln were changed in a wide range. The axial discharging velocity can be directly determined by the volume flow rate of solid bed divided by the whole cross section area of the bed at the kiln discharge end. The axial discharge velocity can be nominally expressed as the function of the axial transport velocity, if the kiln is fully loaded by the materials and the radial rotational velocity of the cylinder. Clinker among other two materials presents a higher difference of the extreme discharge velocities because of the wider particle size difference.
Powder Technology, 2010
The solid bed depth at the discharge end of rotary kilns was experimentally investigated for diff... more The solid bed depth at the discharge end of rotary kilns was experimentally investigated for different mass flow rates, rotational speeds, inclination angles and materials using two lab kilns with sizes of 0.4 m (ID)⁎ 5 m (L) and 0.25 m (ID)⁎ 6.7 m (L), respectively. The solid depth at the discharge was found to be several more times higher than the particle diameter. All parameters according to Saeman's model were combined in a newly developed dimensionless 'Bed depth number' designated as 'Bd'. The filling degree of a solid bed at the discharge can be correlated with F 0 =1.75⁎Bd 0.5 (for an inclination angle between 1°and 4°). The range of the researched Bed depth number (Bd) is suitable for all industrial kilns. These values should be used as the initial condition, which was still unknown before, to solve the differential equation for the profile of the solid bed depth through the cylinder.
Granular Matter, 2011
The axial discharging velocity of the particles was experimentally investigated at the discharge ... more The axial discharging velocity of the particles was experimentally investigated at the discharge end of two rotary kilns with 400 and 250 mm internal diameter, respectively. Sand, glass beads and clinker were used as experimental materials. A physical method without using imaging technology was developed to measure the axial discharging velocity based on the discharge behavior. The mass flow and the rotational speed of kiln were changed in a wide range. The axial discharging velocity can be directly determined by the volume flow rate of solid bed divided by the whole cross section area of the bed at the kiln discharge end. The axial discharge velocity can be nominally expressed as the function of the axial transport velocity, if the kiln is fully loaded by the materials and the radial rotational velocity of the cylinder. Clinker among other two materials presents a higher difference of the extreme discharge velocities because of the wider particle size difference.
Chemical Engineering Science, 2009
An analytical solution is derived to predict the axial solid transport in rotary kilns. With it t... more An analytical solution is derived to predict the axial solid transport in rotary kilns. With it the local depth of the solid bed can be calculated conveniently in dependence on the kiln geometry (diameter and length), the operational variables of the kiln (rotation speed, feed rate and inclination), the property of the material (angle of repose) and the height of the discharge dam. The depth profile of the solid bed is found to depend only on three dimensionless variables. Comparisons demonstrate that the deviation of the analytical result from the numerical result is negligibly small. Good agreement was found between the analytical solution and measured values.
Chemical Engineering Science, 2009
An analytical solution is derived to predict the axial solid transport in rotary kilns. With it t... more An analytical solution is derived to predict the axial solid transport in rotary kilns. With it the local depth of the solid bed can be calculated conveniently in dependence on the kiln geometry (diameter and length), the operational variables of the kiln (rotation speed, feed rate and inclination), the property of the material (angle of repose) and the height of the discharge dam. The depth profile of the solid bed is found to depend only on three dimensionless variables. Comparisons demonstrate that the deviation of the analytical result from the numerical result is negligibly small. Good agreement was found between the analytical solution and measured values.
The present invention relates to a laundry care device (100) comprising a tub (105) for receiving... more The present invention relates to a laundry care device (100) comprising a tub (105) for receiving wash liquor, arranged one in the tub (105) wash basket (107) for accommodating laundry (109) and with the solution container (105) fluidly connected deodorizing (111) for deodorizing the laundry (109), said deodorizing apparatus (111) having an ozone generating element (113) for generating ozone and a mist generating means (115) for generating a water mist, said mist generation means (115) a fluid reservoir (141) for receiving fluid. The deodorizing apparatus (111) comprises a foam detecting means (151) for sensing foam in the fluid container (141), wherein the foam detecting means (151) comprises an electrical measuring element (153) which is in contact with fluid in the fluid container (141), wherein the electrical measuring element (153) is configured to detect an electrical measured value of the fluid in the fluid container (141), and wherein the foam detecting means (151) is adapte...
Granular Matter, 2011
The axial discharging velocity of the particles was experimentally investigated at the discharge ... more The axial discharging velocity of the particles was experimentally investigated at the discharge end of two rotary kilns with 400 and 250 mm internal diameter, respectively. Sand, glass beads and clinker were used as experimental materials. A physical method without using imaging technology was developed to measure the axial discharging velocity based on the discharge behavior. The mass flow and the rotational speed of kiln were changed in a wide range. The axial discharging velocity can be directly determined by the volume flow rate of solid bed divided by the whole cross section area of the bed at the kiln discharge end. The axial discharge velocity can be nominally expressed as the function of the axial transport velocity, if the kiln is fully loaded by the materials and the radial rotational velocity of the cylinder. Clinker among other two materials presents a higher difference of the extreme discharge velocities because of the wider particle size difference.
Powder Technology, 2010
The solid bed depth at the discharge end of rotary kilns was experimentally investigated for diff... more The solid bed depth at the discharge end of rotary kilns was experimentally investigated for different mass flow rates, rotational speeds, inclination angles and materials using two lab kilns with sizes of 0.4 m (ID)⁎ 5 m (L) and 0.25 m (ID)⁎ 6.7 m (L), respectively. The solid depth at the discharge was found to be several more times higher than the particle diameter. All parameters according to Saeman's model were combined in a newly developed dimensionless 'Bed depth number' designated as 'Bd'. The filling degree of a solid bed at the discharge can be correlated with F 0 =1.75⁎Bd 0.5 (for an inclination angle between 1°and 4°). The range of the researched Bed depth number (Bd) is suitable for all industrial kilns. These values should be used as the initial condition, which was still unknown before, to solve the differential equation for the profile of the solid bed depth through the cylinder.
Granular Matter, 2011
The axial discharging velocity of the particles was experimentally investigated at the discharge ... more The axial discharging velocity of the particles was experimentally investigated at the discharge end of two rotary kilns with 400 and 250 mm internal diameter, respectively. Sand, glass beads and clinker were used as experimental materials. A physical method without using imaging technology was developed to measure the axial discharging velocity based on the discharge behavior. The mass flow and the rotational speed of kiln were changed in a wide range. The axial discharging velocity can be directly determined by the volume flow rate of solid bed divided by the whole cross section area of the bed at the kiln discharge end. The axial discharge velocity can be nominally expressed as the function of the axial transport velocity, if the kiln is fully loaded by the materials and the radial rotational velocity of the cylinder. Clinker among other two materials presents a higher difference of the extreme discharge velocities because of the wider particle size difference.
Chemical Engineering Science, 2009
An analytical solution is derived to predict the axial solid transport in rotary kilns. With it t... more An analytical solution is derived to predict the axial solid transport in rotary kilns. With it the local depth of the solid bed can be calculated conveniently in dependence on the kiln geometry (diameter and length), the operational variables of the kiln (rotation speed, feed rate and inclination), the property of the material (angle of repose) and the height of the discharge dam. The depth profile of the solid bed is found to depend only on three dimensionless variables. Comparisons demonstrate that the deviation of the analytical result from the numerical result is negligibly small. Good agreement was found between the analytical solution and measured values.