Frequency response of adsorption of a gas onto bidisperse pore-structured solid with modulation of inlet molar flow-rate

2001 ◽  
Vol 18 (3) ◽  
pp. 330-335 ◽  
Author(s):  
In-Soo Park ◽  
Chul Kwak ◽  
Young-Gi Hwang
Keyword(s):  
Frequency Response ◽  
Flow Rate ◽  
Molar Flow Rate

Frequency response of an adsorber with modulation of the inlet molar flow-rate—II. A continuous flow adsorber

1998 ◽  
Vol 53 (4) ◽  
pp. 833-843 ◽  
Author(s):  
I.S. Park ◽  
M. Petkovska ◽  
D.D. Do
Keyword(s):  
Frequency Response ◽  
Flow Rate ◽  
Continuous Flow ◽  
Molar Flow Rate

Frequency response of an adsorber with modulation of the inlet molar flow-rate—I. A semi-batch adsorber

1998 ◽  
Vol 53 (4) ◽  
pp. 819-832 ◽  
Author(s):  
I.S. Park ◽  
M. Petkovska ◽  
D.D. Do
Keyword(s):  
Frequency Response ◽  
Flow Rate ◽  
Molar Flow Rate

Numerical Studies on Frequency Response to Mass Flow Rate Variations in a Hydromechanical Pulsator

2009 ◽  
Author(s):  
Madhanabharatam Balasubramanyam ◽  
David Lineberry ◽  
Chien Chen ◽  
Vladimir Bazarov
Keyword(s):  
Frequency Response ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Numerical Studies

Effect of flow rate variation on the frequency response in slot coating process with different upstream sloped die geometries

2015 ◽  
Vol 32 (7) ◽  
pp. 1218-1221 ◽  
Author(s):  
Won-Gi Ahn ◽  
Si Hyung Lee ◽  
Jaewook Nam ◽  
Hyun Wook Jung
Keyword(s):  
Frequency Response ◽  
Flow Rate ◽  
Rate Variation ◽  
Coating Process ◽  
Slot Coating

Investigation of the Mass Flow Sources in a Multi-Cylinder Compressor Using Frequency Response of Pressure Pulsations in the Suction Manifold

2003 ◽  
Author(s):  
Jeong-Il Park ◽  
Douglas E. Adams ◽  
Yoshinobu Ichikawa ◽  
Jacob Bayyouk
Keyword(s):  
Frequency Response ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Wave Theory ◽  
Inhomogeneous Equation ◽  
Pressure Pulsations ◽  
Pole Parameter ◽  
Gas Pulsations ◽  
Thermodynamic Equations

Linear acoustic plane wave theory and a four pole parameter formulation are used to derive and solve the governing inhomogeneous equation for the forced pressure response in the simplified manifold model. The equations for estimating gas pressure pulsations in the annular cavity connected to an anechoic inlet pipe are presented. Complicated interactions between multiple cylinder valve ports in the suction manifold produce unexpected changes in the frequency response conditions for changes in the operating speed, and hence, the flow rate characteristics through the valves. From the addition of the delayed time for opening valve in the mass flow rate profiles and the comparison of the gas pulsations from experiment with those from simulation, the maximum strokes of the piston and the delayed times for opening valve can be estimated without solving the valve dynamic and thermodynamic equations. By applying the mass flow rate sinks at each valve as identified, the correlation between analytical and experimental results is shown to be much better than if the idealized, kinematically obtained source functions are used instead.

Adsorption kinetics of light paraffins in AC by a constant molar flow-rate method

AIChE Journal ◽  
1999 ◽  
Vol 45 (9) ◽  
pp. 1892-1900 ◽  
Author(s):  
I. Prasetyo ◽  
D. D. Do
Keyword(s):  
Adsorption Kinetics ◽  
Flow Rate ◽  
Molar Flow Rate ◽  
Light Paraffins ◽  
Rate Method ◽  
Kinetics Of ◽  
Constant Molar Flow

scholarly journals Multi-Objective Optimization of Braun-Type Exothermic Reactor for Ammonia Synthesis

Entropy ◽  
2021 ◽  
Vol 24 (1) ◽  
pp. 52
Author(s):  
Tianchao Xie ◽  
Shaojun Xia ◽  
Chao Wang
Keyword(s):  
Entropy Generation ◽  
Flow Rate ◽  
Ammonia Synthesis ◽  
Storage System ◽  
Generation Rate ◽  
Entropy Generation Rate ◽  
Inlet Temperature ◽  
Total Entropy ◽  
Nsga Ii ◽  
Molar Flow Rate

The exothermic reactor for ammonia synthesis is a primary device determining the performance of the energy storage system. The Braun-type ammonia synthesis reactor is used as the exothermic reactor to improve the heat release rate. Due to the entirely different usage scenarios and design objectives, its parameters need to be redesigned and optimized. Based on finite-time thermodynamics, a one-dimensional model is established to analyze the effects of inlet gas molar flow rate, hydrogen–nitrogen ratio, reactor length and inlet temperature on the total entropy generation rate and the total exothermic rate of the reactor. It’s found that the total exothermic rate mainly depends on the inlet molar flow rate. Furthermore, considering the minimum total entropy generation rate and maximum total exothermic rate, the NSGA-II algorithm is applied to optimize seven reactor parameters including the inlet molar flow rate, lengths and temperatures of the three reactors. Lastly, the optimized reactor is obtained from the Pareto front using three fuzzy decision methods and deviation index. Compared with the reference reactor, the total exothermic rate of the optimized reactor is improved by 12.6% while the total entropy generation rate is reduced by 3.4%. The results in this paper can provide some guidance for the optimal design and application of exothermic reactors in practical engineering.

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