Characterization of the start-up behavior and steady-state performance of biotrickling filter removing low concentration toluene waste gas

2012 ◽  
Vol 55 (6) ◽  
pp. 1701-1710 ◽  
Author(s):  
Rong Chen ◽  
Qiang Liao ◽  
Xin Tian ◽  
YongZhong Wang ◽  
Xun Zhu ◽  
...  
Keyword(s):  
Steady State ◽  
Biotrickling Filter ◽  
Low Concentration ◽  
Waste Gas ◽  
Start Up ◽  
Steady State Performance

Start-up and Steady-State Performance of a New Renewable Alcohol-To-Jet (ATJ) Fuel in Multiple Diesel Engines

2015 ◽  
Author(s):  
Terrence Dickerson ◽  
Andrew McDaniel ◽  
Sherry Williams ◽  
Dianne Luning-Prak ◽  
Len Hamilton ◽  
...  
Keyword(s):  
Steady State ◽  
Diesel Engines ◽  
Start Up ◽  
Steady State Performance

Computing the closed-loop characteristics of a generalized multi-threshold knock controller

2017 ◽  
Vol 19 (9) ◽  
pp. 952-962 ◽  
Author(s):  
Saeed Shayestehmanesh ◽  
James C Peyton Jones ◽  
Jesse Frey
Keyword(s):  
Steady State ◽  
Control Systems ◽  
Closed Loop ◽  
Single Experiment ◽  
Informative Feedback ◽  
Control Laws ◽  
Knock Control ◽  
Transient And Steady State ◽  
Steady State Performance

Most knock controllers respond to knock events which are defined according to some threshold knock intensity. Multi-threshold knock events offer more informative feedback since they encode not just the occurrence of knock events but also some measure of their intensity. While this has the potential for improved control, it is hard to assess the extent to which any benefits are truly realized because (in common with all knock control systems) the results of any single experiment or simulation depends on the random arrival of knock events in that instance. In this article, methods are developed instead to compute the statistical properties of the closed-loop response of a general multi-threshold knock controller, thereby providing a much more complete and rigorous characterization of its performance than has previously been possible. The method is applied to single- and dual-threshold knock controllers and used to provide a rigorous comparison of the transient and steady-state performance of these different control laws. The method can also be used as a calibration aid to assess the effects of different controller gains in reliable, repeatable fashion.

Transient Simulation of Absorption Machines

1982 ◽  
Vol 104 (3) ◽  
pp. 197-203 ◽  
Author(s):  
D. K. Anand ◽  
R. W. Allen ◽  
B. Kumar
Keyword(s):  
Steady State ◽  
Lithium Bromide ◽  
Working Fluid ◽  
Cooling Load ◽  
Space Cooling ◽  
Start Up ◽  
Residual Capacity ◽  
Insight Into ◽  
Significant Factors ◽  
Steady State Performance

This paper presents a model for a water-cooled Lithium-Bromide/water absorption chiller and predicts its transient response both during the start-up phase and during the shutoff period. The simulation model incorporates such influencing factors as the thermodynamic properties of the working fluid, the absorbent, the heat-transfer configuration of different components of the chiller and related physical data. The time constants of different components are controlled by a set of key parameters that have been identified in this study. The results show a variable but at times significant amount of time delay before the chiller capacity gets close to its steady-state value. The model is intended to provide an insight into the mechanism of build-up to steady-state performance. By recognizing the significant factors contributing to transient degradation, steps can be taken to reduce such degradation. The evaluation of the residual capacity in the shut-off period will yield more realistic estimates of chiller COP for a chiller satisfying dynamic space cooling load.

scholarly journals Steady-state and transient-state performance of a biotrickling filter treating chlorobenzene-containing waste gas

2004 ◽  
Vol 65 (1) ◽  
Author(s):  
C. Seignez ◽  
N. Adler ◽  
C. Thoeni ◽  
M. Stettler ◽  
P. P�ringer ◽  
...  
Keyword(s):  
Steady State ◽  
Transient State ◽  
Biotrickling Filter ◽  
Waste Gas

Quasi-steady-state performance of a heat pipe subjected to transient acceleration loadings

10.2514/3.895 ◽  
1997 ◽  
Vol 11 ◽  
pp. 306-309 ◽  
Author(s):  
Edwin H. Olmstead ◽  
Edward S. Taylor ◽  
Meng Wang ◽  
Parviz Moin ◽  
Scott K. Thomas ◽  
...  
Keyword(s):  
Steady State ◽  
Heat Pipe ◽  
Quasi Steady State ◽  
Steady State Performance

A Novel Control Scheme for PWM Boost Converter based on Sliding Mode Control using Particle Swarm Optimization

2020 ◽  
Vol 14 ◽  
Author(s):  
Gang Liu ◽  
Dong Qiu ◽  
Xiuru Wang ◽  
Ke Zhang ◽  
Huafeng Huang ◽  
...  
Keyword(s):  
Particle Swarm Optimization ◽  
Steady State ◽  
Sliding Mode ◽  
Particle Swarm ◽  
Mathematic Model ◽  
Absolute Error ◽  
Boost Converter ◽  
Sliding Mode Controller ◽  
Swarm Optimization ◽  
Steady State Performance

Background: The PWM Boost converter is a strongly nonlinear discrete system, especially when the input voltage or load varies widely, therefore, tuning the control parameters of which is a challenge work. Objective: In order to overcome the issues, particle swarm optimization (PSO) is employed for tuning the parameters of a sliding mode controller of a boost converter. Methods: Based on the analysis of the Boost converter model and its non-linear characteristics, a mathematic model of a boost converter with a sliding mode controller is built firstly. Then, the parameters of the Boost controller are adjusted based on the integrated time and absolute error (ITAE), integral square error (ISE) and integrated absolute error (IAE) indexes by PSO. Results: Simulation verification was performed, and the results show that the controllers tuned by the three indexes all have excellent robust stability. Conclusion: The controllers tuned by ITAE and ISE indexes have excellent steady-state performance, but the overshoot is large during the startup. The controller tuned by IAE index has better startup performance and slightly worse steady-state performance.

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