The Experts below are selected from a list of 198 Experts worldwide ranked by ideXlab platform
Chen Yunlin - One of the best experts on this subject based on the ideXlab platform.
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Local overall gas–liquid mass transfer coefficient in a gas–liquid–solid reversed Flow Jet loop reactor
Chemical Engineering Journal, 2002Co-Authors: Wen Jianping, Na Ping, Huang Lin, Chen YunlinAbstract:Abstract Local overall gas–liquid mass transfer coefficients ( K L a ) of gas–liquid–solid three-phase reversed Flow Jet loop reactors have been experimentally investigated by means of a transient gassing-in method. Effects of liquid Jet Flow Rate, gas Jet Flow Rate, particle density, particle diameter, solid loading, nozzle diameter and axial position on local overall gas–liquid mass transfer coefficient profiles are discussed. It was observed that the local overall gas–liquid mass transfer coefficient profiles of the reversed Flow Jet loop reactor with a three-phase system increase with increase in gas Jet Flow Rates and liquid Jet Flow Rates and particle density and particle diameter, and with decrease in nozzle diameter and axial position. The presence of solids at low concentrations increases the local overall gas–liquid mass transfer coefficient profiles, and the optimum of adding solid loading for maximum profile of the local overall K L a was found to be 0.16×10 −3 m 3 corresponding to a solid volume fraction, ϵ S =2.5%.
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Solid–liquid mass transfer in a gas–liquid–solid three-phase reversed Flow Jet loop reactor
Chemical Engineering Journal, 2000Co-Authors: Wen Jianping, Huang Lin, Zhu Yong, Li Chao, Chen YunlinAbstract:Abstract Solid–liquid mass transfer in gas–liquid–solid three-phase reversed Flow Jet loop reactors was experimentally investigated by means of an electrochemical method, and the effects of liquid Jet Flow Rate, gas Jet Flow Rate, particle size, particle density and nozzle diameter on the solid–liquid mass transfer coefficient were evaluated. The solid–liquid mass transfer coefficients in gas–liquid–solid three-phase reversed Flow Jet loop reactors are higher than those in the corresponding liquid–solid two-phase reversed Flow Jet loop reactors. A generalized correlation is developed which more accuRately and conveniently predicts solid–liquid mass transfer in gas–liquid–solid three-phase reversed Flow Jet loop reactors.
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Local overall volumetric gas–liquid mass transfer coefficients in gas–liquid–solid reversed Flow Jet loop bioreactor with a non-Newtonian fluid
Biochemical engineering journal, 2000Co-Authors: Wen Jianping, Na Ping, Huang Lin, Chen YunlinAbstract:The local overall volumetric gas-liquid mass transfer coefficients at the specified point in a gas-liquid-solid three-phase reversed Flow Jet loop bioreactor (JLB) with a non-Newtonian fluid was experimentally investigated by a transient gassing-in method. The effects of liquid Jet Flow Rate, gas Jet Flow Rate, particle density, particle diameter, solids loading, nozzle diameter and CMC concentration on the local overall volumetric gas-liquid mass transfer coefficient (K(L)a) profiles were discussed. It was observed that local overall K(L)a profiles in the three-phase reversed Flow JLB with non-Newtonian fluid increased with the increase of gas Jet Flow Rate, liquid Jet Flow Rate, particle density and particle diameter, but decreased with the increase of the nozzle diameter and CMC concentration. The presence of solids at a low concentration increased the local overall K(L)a profiles, and the optimum of solids loading for a maximum profile of the local overall K(L)a was found to be 0.18x10(-3)m(3) corresponding to a solids volume fraction, varepsilon(S)=2.8%.
Wen Jianping - One of the best experts on this subject based on the ideXlab platform.
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Local overall gas–liquid mass transfer coefficient in a gas–liquid–solid reversed Flow Jet loop reactor
Chemical Engineering Journal, 2002Co-Authors: Wen Jianping, Na Ping, Huang Lin, Chen YunlinAbstract:Abstract Local overall gas–liquid mass transfer coefficients ( K L a ) of gas–liquid–solid three-phase reversed Flow Jet loop reactors have been experimentally investigated by means of a transient gassing-in method. Effects of liquid Jet Flow Rate, gas Jet Flow Rate, particle density, particle diameter, solid loading, nozzle diameter and axial position on local overall gas–liquid mass transfer coefficient profiles are discussed. It was observed that the local overall gas–liquid mass transfer coefficient profiles of the reversed Flow Jet loop reactor with a three-phase system increase with increase in gas Jet Flow Rates and liquid Jet Flow Rates and particle density and particle diameter, and with decrease in nozzle diameter and axial position. The presence of solids at low concentrations increases the local overall gas–liquid mass transfer coefficient profiles, and the optimum of adding solid loading for maximum profile of the local overall K L a was found to be 0.16×10 −3 m 3 corresponding to a solid volume fraction, ϵ S =2.5%.
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Local Gas Phase Flow Characteristics of a Gas-Liquid-Solid Three-Phase Reversed Flow Jet Loop Reactor
2002Co-Authors: Wen JianpingAbstract:The local gas-phase Flow characteristics such as local gas holdup (eg), local bubble velocity (Vb) and local bubble mean diameter (db) at a specified point in a gas-liquid-solid three-phase reversed Flow Jet loop reactor was experimentally investigated by a five-point conductivity probe. The effects of gas Jet Flow Rate, liquid Jet Flow Rate, solid loading, nozzle diameter and axial position on the local eg, Vb and rfb profiles were discussed. The presence of solids at low solid concentrations not only increased the local eg and Vb, but also decreased the local db ?The optimum solid loading for the maximum local eg and Vb together with the minimum local db, was 0.16 x 10-3 m3, corresponding to a solid volume fraction, eS = 2.5%.
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Solid–liquid mass transfer in a gas–liquid–solid three-phase reversed Flow Jet loop reactor
Chemical Engineering Journal, 2000Co-Authors: Wen Jianping, Huang Lin, Zhu Yong, Li Chao, Chen YunlinAbstract:Abstract Solid–liquid mass transfer in gas–liquid–solid three-phase reversed Flow Jet loop reactors was experimentally investigated by means of an electrochemical method, and the effects of liquid Jet Flow Rate, gas Jet Flow Rate, particle size, particle density and nozzle diameter on the solid–liquid mass transfer coefficient were evaluated. The solid–liquid mass transfer coefficients in gas–liquid–solid three-phase reversed Flow Jet loop reactors are higher than those in the corresponding liquid–solid two-phase reversed Flow Jet loop reactors. A generalized correlation is developed which more accuRately and conveniently predicts solid–liquid mass transfer in gas–liquid–solid three-phase reversed Flow Jet loop reactors.
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Local overall volumetric gas–liquid mass transfer coefficients in gas–liquid–solid reversed Flow Jet loop bioreactor with a non-Newtonian fluid
Biochemical engineering journal, 2000Co-Authors: Wen Jianping, Na Ping, Huang Lin, Chen YunlinAbstract:The local overall volumetric gas-liquid mass transfer coefficients at the specified point in a gas-liquid-solid three-phase reversed Flow Jet loop bioreactor (JLB) with a non-Newtonian fluid was experimentally investigated by a transient gassing-in method. The effects of liquid Jet Flow Rate, gas Jet Flow Rate, particle density, particle diameter, solids loading, nozzle diameter and CMC concentration on the local overall volumetric gas-liquid mass transfer coefficient (K(L)a) profiles were discussed. It was observed that local overall K(L)a profiles in the three-phase reversed Flow JLB with non-Newtonian fluid increased with the increase of gas Jet Flow Rate, liquid Jet Flow Rate, particle density and particle diameter, but decreased with the increase of the nozzle diameter and CMC concentration. The presence of solids at a low concentration increased the local overall K(L)a profiles, and the optimum of solids loading for a maximum profile of the local overall K(L)a was found to be 0.18x10(-3)m(3) corresponding to a solids volume fraction, varepsilon(S)=2.8%.
Huang Lin - One of the best experts on this subject based on the ideXlab platform.
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Local overall gas–liquid mass transfer coefficient in a gas–liquid–solid reversed Flow Jet loop reactor
Chemical Engineering Journal, 2002Co-Authors: Wen Jianping, Na Ping, Huang Lin, Chen YunlinAbstract:Abstract Local overall gas–liquid mass transfer coefficients ( K L a ) of gas–liquid–solid three-phase reversed Flow Jet loop reactors have been experimentally investigated by means of a transient gassing-in method. Effects of liquid Jet Flow Rate, gas Jet Flow Rate, particle density, particle diameter, solid loading, nozzle diameter and axial position on local overall gas–liquid mass transfer coefficient profiles are discussed. It was observed that the local overall gas–liquid mass transfer coefficient profiles of the reversed Flow Jet loop reactor with a three-phase system increase with increase in gas Jet Flow Rates and liquid Jet Flow Rates and particle density and particle diameter, and with decrease in nozzle diameter and axial position. The presence of solids at low concentrations increases the local overall gas–liquid mass transfer coefficient profiles, and the optimum of adding solid loading for maximum profile of the local overall K L a was found to be 0.16×10 −3 m 3 corresponding to a solid volume fraction, ϵ S =2.5%.
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Solid–liquid mass transfer in a gas–liquid–solid three-phase reversed Flow Jet loop reactor
Chemical Engineering Journal, 2000Co-Authors: Wen Jianping, Huang Lin, Zhu Yong, Li Chao, Chen YunlinAbstract:Abstract Solid–liquid mass transfer in gas–liquid–solid three-phase reversed Flow Jet loop reactors was experimentally investigated by means of an electrochemical method, and the effects of liquid Jet Flow Rate, gas Jet Flow Rate, particle size, particle density and nozzle diameter on the solid–liquid mass transfer coefficient were evaluated. The solid–liquid mass transfer coefficients in gas–liquid–solid three-phase reversed Flow Jet loop reactors are higher than those in the corresponding liquid–solid two-phase reversed Flow Jet loop reactors. A generalized correlation is developed which more accuRately and conveniently predicts solid–liquid mass transfer in gas–liquid–solid three-phase reversed Flow Jet loop reactors.
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Local overall volumetric gas–liquid mass transfer coefficients in gas–liquid–solid reversed Flow Jet loop bioreactor with a non-Newtonian fluid
Biochemical engineering journal, 2000Co-Authors: Wen Jianping, Na Ping, Huang Lin, Chen YunlinAbstract:The local overall volumetric gas-liquid mass transfer coefficients at the specified point in a gas-liquid-solid three-phase reversed Flow Jet loop bioreactor (JLB) with a non-Newtonian fluid was experimentally investigated by a transient gassing-in method. The effects of liquid Jet Flow Rate, gas Jet Flow Rate, particle density, particle diameter, solids loading, nozzle diameter and CMC concentration on the local overall volumetric gas-liquid mass transfer coefficient (K(L)a) profiles were discussed. It was observed that local overall K(L)a profiles in the three-phase reversed Flow JLB with non-Newtonian fluid increased with the increase of gas Jet Flow Rate, liquid Jet Flow Rate, particle density and particle diameter, but decreased with the increase of the nozzle diameter and CMC concentration. The presence of solids at a low concentration increased the local overall K(L)a profiles, and the optimum of solids loading for a maximum profile of the local overall K(L)a was found to be 0.18x10(-3)m(3) corresponding to a solids volume fraction, varepsilon(S)=2.8%.
Na Ping - One of the best experts on this subject based on the ideXlab platform.
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Local overall gas–liquid mass transfer coefficient in a gas–liquid–solid reversed Flow Jet loop reactor
Chemical Engineering Journal, 2002Co-Authors: Wen Jianping, Na Ping, Huang Lin, Chen YunlinAbstract:Abstract Local overall gas–liquid mass transfer coefficients ( K L a ) of gas–liquid–solid three-phase reversed Flow Jet loop reactors have been experimentally investigated by means of a transient gassing-in method. Effects of liquid Jet Flow Rate, gas Jet Flow Rate, particle density, particle diameter, solid loading, nozzle diameter and axial position on local overall gas–liquid mass transfer coefficient profiles are discussed. It was observed that the local overall gas–liquid mass transfer coefficient profiles of the reversed Flow Jet loop reactor with a three-phase system increase with increase in gas Jet Flow Rates and liquid Jet Flow Rates and particle density and particle diameter, and with decrease in nozzle diameter and axial position. The presence of solids at low concentrations increases the local overall gas–liquid mass transfer coefficient profiles, and the optimum of adding solid loading for maximum profile of the local overall K L a was found to be 0.16×10 −3 m 3 corresponding to a solid volume fraction, ϵ S =2.5%.
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Local overall volumetric gas–liquid mass transfer coefficients in gas–liquid–solid reversed Flow Jet loop bioreactor with a non-Newtonian fluid
Biochemical engineering journal, 2000Co-Authors: Wen Jianping, Na Ping, Huang Lin, Chen YunlinAbstract:The local overall volumetric gas-liquid mass transfer coefficients at the specified point in a gas-liquid-solid three-phase reversed Flow Jet loop bioreactor (JLB) with a non-Newtonian fluid was experimentally investigated by a transient gassing-in method. The effects of liquid Jet Flow Rate, gas Jet Flow Rate, particle density, particle diameter, solids loading, nozzle diameter and CMC concentration on the local overall volumetric gas-liquid mass transfer coefficient (K(L)a) profiles were discussed. It was observed that local overall K(L)a profiles in the three-phase reversed Flow JLB with non-Newtonian fluid increased with the increase of gas Jet Flow Rate, liquid Jet Flow Rate, particle density and particle diameter, but decreased with the increase of the nozzle diameter and CMC concentration. The presence of solids at a low concentration increased the local overall K(L)a profiles, and the optimum of solids loading for a maximum profile of the local overall K(L)a was found to be 0.18x10(-3)m(3) corresponding to a solids volume fraction, varepsilon(S)=2.8%.
Qingwu Cai - One of the best experts on this subject based on the ideXlab platform.
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Experimental study of heat transfer coefficient on hot steel plate during water Jet impingement cooling
Journal of Materials Processing Technology, 2012Co-Authors: Hemu Wang, Qingwu CaiAbstract:Abstract Experiments were performed, under transient conditions, to investigate the heat transfer phenomena of stationary hot steel plate under multiple top circular Jets on run-out table. Based on inverse heat conduction model, a two-dimensional finite difference program was developed to calculate the local surface convective heat transfer coefficients and corresponding temperatures. The cooling water Jet Flow Rate was varied from 15 L/min to 35 L/min and its effect on the convective heat transfer coefficient and surface temperature was analyzed. The results show that heat transfer coefficients are nonlinear functions of surface temperature. The cooling Flow Rate has no effect on heat transfer coefficient and surface temperature at stagnation point. Within 70 mm distance from stagnation line, heat transfer coefficient ratio changes slightly from 0.87 to 0.97. Beyond surface temperature of 350 °C, heat transfer coefficient ratio decreases with increasing distance from stagnation line.