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197 results on '"Heesch, E. J. M."'

1. Pulsed Power Generators

Author

Huiskamp, T., van Heesch, E. J. M., Pemen, A. J. M., Bonitz, Michael, Series Editor, Takabe, Hideaki, Series Editor, Yoshida, Zensho, Series Editor, Shao, Tao, editor, and Zhang, Cheng, editor

Published
2023
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2. Pulsed processing by cold plasma, applied to industrial emission control

Author

Van Heesch, E. J. M., primary, Huiskamp, T., additional, Yan, K., additional, Beckers, F. J. C. M., additional, Smulders, H. W. M., additional, Winands, G. J. J., additional, Lemmens, R. H. P., additional, Blom, P. P. M., additional, Segura, S. Davalos, additional, Hoeben, W. F. L. M., additional, Van Paasen, S. V. B., additional, Van Oorschot, J. J., additional, Bonkestoter, A. G. A., additional, Van Den Brand, M. L. J., additional, Hennink, M., additional, Smulders, R. W. J., additional, Pemen, A. J. M., additional, and Van Der Laan, P. C. T., additional

Published
2024
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3. Pulsed processing by cold plasma, applied to industrial emission control.

Author

Heesch, E. J. M. Van, Huiskamp, T., Yan, K., Beckers, F. J. C. M., Smulders, H. W. M., Winands, G. J. J., Lemmens, R. H. P., Blom, P. P. M., Segura, S. Davalos, Hoeben, W. F. L. M., Paasen, S. V. B. Van, Oorschot, J. J. Van, Bonkestoter, A. G. A., Brand, M. L. J. Van Den, Hennink, M., Smulders, R. W. J., Pemen, A. J. M., Laan, P. C. T. Van Der, Neuber, Andreas, and Pan, Yun-Xiang

Subjects
*PLASMA materials processing, *LOW temperature plasmas, *CHEMICAL processes, *VOLATILE organic compounds, *GOVERNMENT policy
Abstract

A promising pollution control technology is cold plasma driven chemical processing. The plasma is a pulsed electric gas discharge inside a near atmospheric-pressure-temperature reactor. The system is energized by a continuous stream of very short high-voltage pulses. The exhaust gas to be treated flows through the reactor. The methods applied involve the development of robust cold plasma systems, industrial applications and measuring technologies. Tests of the systems were performed at many industrial sites and involved control of airborne VOC (volatile organic compound) and odor. Electrical, chemical and odor measuring data were collected with state-of-the-art methods. To explain the test data an approximate solution of global reaction kinetics of pulsed plasma chemistry was developed. It involves the Lambert function and, for convenience, a simple approximation of it. The latter shows that the amount of removal, in good approximation, is a function of a single variable. This variable is electric plasma power divided by gas flow divided by input concentration. In the results sections we show that in some cases up to 99% of volatile pollution can be removed at an acceptable energy requirement. In the final sections we look into future efficiency enhancements by implementation of (sub)nanosecond pulsed plasma and solid state high-voltage technology and by integration with catalyst technology. [ABSTRACT FROM AUTHOR]

Published
2024
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4. Pulsed Power Technology

Author

Akiyama, Hidenori, Katsuki, Sunao, Redondo, Luis, Akiyama, Masahiro, Pemen, A. J. M., Huiskamp, T., Beckers, F. J. C. M., van Heesch, E. J. M., Winands, G. J. J., Voeten, S. J., Zhen, L., van Bree, J. W. M., Xiao, Shu, Petrella, Ross, Akiyama, Hidenori, editor, and Heller, Richard, editor

Published
2017
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7. Pulsed Power Technology

Author

Akiyama, Hidenori, primary, Katsuki, Sunao, additional, Redondo, Luis, additional, Akiyama, Masahiro, additional, Pemen, A. J. M., additional, Huiskamp, T., additional, Beckers, F. J. C. M., additional, van Heesch, E. J. M., additional, Winands, G. J. J., additional, Voeten, S. J., additional, Zhen, L., additional, van Bree, J. W. M., additional, Xiao, Shu, additional, and Petrella, Ross, additional

Published
2016
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10. Pulsed Corona Experiments

Author

van Heesch, E. J. M., Pemen, A. J. M., van der Snoek, J. W., van der Laan, P. C. T., Christophorou, Loucas G., editor, and Sauers, Isidor, editor

Published
1991
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14. Direct and indirect NO removal with (sub)nanosecond pulses : yield and by-product formation

Author

Tom Huiskamp, Beckers, F. J. C. M., W. F. L. M. Hoeben, August Pemen, Heesch, E. J. M., Electrical Energy Systems, Cyber-Physical Systems Center Eindhoven, and Power Conversion

Subjects
biological sciences
Abstract

In this contribution we show results of direct and indirect removal of nitric oxide (NO) with (sub)nanosecond pulses. The nanosecond pulse source is the 0.5-10-ns, 0-50-kV (positive and negative), 0.2-ns rise time pulse source that we recently developed at Eindhoven University of Technology. The direct-removal setup is an in-plasma removal setup, where the polluted air (with NO) is flushed directly through a pulsed corona plasma generated with the nanosecond pulses. In the indirect-removal setup, we generate ozone in clean air in the corona plasma reactor and mix this with the polluted gas stream after the plasma reactor. In this method, NO is removed by reaction with ozone and not directly in the plasma. We report on removal yields and by-product formation.

Published
2017

19. Tar removal from biomass-derived fuel gas by pulsed corona discharges. A chemical kinetic study

Author

Sreejit Nair, Yan, K., Pemen, A. J. M., Heesch, E. J. M., Ptasinski, K. J., Drinkenburg, A. A. H., Electrical Energy Systems, Chemical Reactor Engineering, Pulsed corona, and Power Conversion

Subjects
General Chemical Engineering, General Chemistry, SDG 7 - Affordable and Clean Energy, Industrial and Manufacturing Engineering, SDG 7 – Betaalbare en schone energie
Abstract

Tar (heavy hydrocarbon or polycyclic aromatic hydrocarbon) removal from biomass-derived fuel gas is one of the biggest obstacles in its utilization for power generation. We have investigated pulsed corona as a method for tar removal. Experimental results have indicated the energy density requirement to be 400 J/L for naphthalene removal (model tar compound) from synthetic fuel gas (CO, CO2, H2, CH4, N2) at a temperature of 200 °C. For the process to be competitive and economical, the energy consumption needs to be reduced. This requires an understanding of the chemical processes involved. In previous studies, we have investigated the primary processes at a temperature of 200 °C. The present study aims to identify the main reactions involved by means of a sensitivity analysis. Results indicate that, apart from CO, which apparently seems to be the most terminating species for the reactive O radical at a temperature of 200 °C, formaldehyde, formed during radical reactions, also acts as a major quencher.

Published
2004

20. A Fast Pulsed Power Source Applied to Treatment of Conducting Liquids and Air

Author

van Heesch, E. J. M., Pemen, A. J. M., Huijbrechts, Paul A. H. J., van der Laan, Piet C. T., Ptasinski, Krzysztof J., Zanstra, Geert J., and de Jong, Peter

Subjects
Microorganisms -- Effect of radiation on, Pulsed radiation -- Research, Decontamination (from gases, chemicals, etc.) -- Methods, Electric fields -- Usage, Business, Chemistry, Electronics, Electronics and electrical industries
Abstract

Two pilot pulsed power sources were developed for fundamental investigations and industrial demonstrations of treatment of conducting liquids. The developed heavy-duty power sources have an output voltage of 100 kV (rise time 10 ns, pulse duration 150 ns, pulse repetition rate maximum 1000 pps). A pulse energy of 0.5-3 J/pulse and an average pulse power of 1.5 kW have been achieved with an efficiency of about 80%. In addition, adequate electromagnetic compatibility is achieved between the high-voltage pulse sources and the surrounding equipment. Various applications, such as the use of pulsed electric fields (PEF's) or pulsed corona discharges for inactivation of microorganisms in liquids or air, have been tested in the laboratory. For PEF treatment, homogeneous electric fields in the liquid of up to 70 kV/cm at a pulse repetition rate of 10-400 pps could be achieved. The inactivation is found to be 85 kJ/L per log reduction for Pseudomonas fluorescens and 500 kJ/L per log reduction for spores of Bacillus cereus. Corona directly applied to the liquid is found to be more efficient than PEF. With direct corona we achieve 25 kJ/L per log reduction for both Gram positive and Gram negative bacteria. For air disinfection using our corona pulse source, the measured efficiencies are excellent: 2 J/L per log reduction. Index Terms--Cold pasteurization, inactivation of microorganisms, membrane breakdown, pulsed corona, pulsed electric fields (PEF's), pulsed power.

Published
2000

24. Streamer to spark transition in supercritical N2

Author

Markosyan, A. H., Zhang, J., Heesch, E. J. M., Ute Ebert, Electrical Energy Systems, and Multiscale Dynamics

Subjects
Physics::Instrumentation and Detectors, Physics::Plasma Physics, Breakdown in supercritical N2, Gas heating, Streamer to spark transition, Supercritical switch
Abstract

We model the streamer to spark transition in supercritical nitrogen as this is a promising medium for electrical switching. We assume that the streamer has bridged the gap and that a weakly ionized channel with a constant field has formed. We model how the discharge energy is transferred from kinetic energy of electrons into particular molecular excitations and further into gas heating, and how the thermal expansion of the discharge channel sets in.

Published
2013

33. Supercritical fluids for high-power switching

Author

van Heesch, E. J. M., primary, Zhang, Jin, additional, Namihira, Takao, additional, Markosyan, A. H., additional, Beckers, F. J. C. M., additional, Huiskamp, T., additional, Hoeben, W. F. L. M., additional, Pemen, A. J. M., additional, and Ebert, U., additional

Published
2014
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