Energy Conversion Technologies BV

AE, Netherlands

Energy Conversion Technologies BV

AE, Netherlands

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Roestenberg T.,University of Twente | Roestenberg T.,Energy Conversion Technologies BV | Glushenkov M.J.,Energy Conversion Technologies BV | Kronberg A.E.,Energy Conversion Technologies BV | vd Meer T.,University of Twente
Chemical Engineering Science | Year: 2010

The pulsed compression reactor promises to be a compact, economical and energy efficient alternative to conventional chemical reactors. While its design and operation is similar to that of a free piston internal combustion engine, it does not benefit from any controllability through the load. Experimental data and simulation results are presented in this article. They form the basis for an approach that describes the functioning, controllability and run-away possibility of the pulsed compression reactor. The approach demonstrates that two operating points can be identified: a stable operating point and an unstable operating point. For any process performed in the pulsed compression reactor, there will either be no operating point, in which case it will not be able to sustain this process in the reactor, there will be only a stable operating point, in which case the process will automatically converge to this point once initiated, or there will be both a stable and an unstable operating point, in which case the process can be sustained at the stable operating point, but not at or beyond the unstable one. © 2010 Elsevier Ltd.


Roestenberg T.,University of Twente | Glushenkov M.J.,Energy Conversion Technologies BV | Kronberg A.E.,Energy Conversion Technologies BV | Krediet H.J.,University of Twente | vd Meer Th.H.,University of Twente
Chemical Engineering Science | Year: 2010

The newly invented pulsed compression reactor functions similarly to an internal combustion (IC) engine, but unlike the IC, it does not suffer the IC's limitations. While peak temperatures are in the order of 1500-5000 K, and peak pressures in the order of 100-2000 bar, the average temperature and pressure of the reaction zones are much lower. The piston can reciprocate at over 200 Hz. The total time the reaction zone is at peak pressure and temperature every cycle is a mere fraction of a millisecond. The experiments presented in this article were designed to determine the penetration of heat into the reactor cover. Seven thermocouples were inserted into the top cover of the pulsed compression reactor, monitoring the progress of heat through the reactor cover during operation. This is used to calculate the effective heat transfer between the reaction zone and cylinder. The experiments were carried out under operating conditions lower than those that might be used in industrial applications. The goal was to investigate the strength of the proposed experimental method. The conclusion is that the experimental method is very insightful, and gives interesting results with respect to heat transfer, and can thus be applied for industrial operating regimes. The energy loss due to heat flowing from the reaction zone to the cover in these experiments was about 1.6% of the energy spent for the compression of the gasses, when the reactor is still at ambient conditions. © 2009 Elsevier Ltd. All rights reserved.


Roestenberg T.,University of Twente | Roestenberg T.,Energy Conversion Technologies BV | Glushenkov M.J.,Energy Conversion Technologies BV | Kronberg A.E.,Energy Conversion Technologies BV | And 2 more authors.
Fuel | Year: 2011

The Pulsed Compression Reactor (PCR) promises to be a compact, economical and energy efficient alternative to conventional chemical reactors. In this article, the production of synthesis gas using the Pulsed Compression Reactor is investigated. This is done experimentally as well as with simulations. The experiments are done by means of a single shot reactor, which replicates a representative single reciprocation of the Pulsed Compression Reactor with great control over the reactant composition, reactor temperature and reciprocation path. Simulations are done with an ideally stirred tank reactor model using detailed chemical kinetics. Experiments are done with different mixtures and at various initial temperatures. Simulation results show very good agreement with the experimental data, and give great insight into the reaction processes that occur within the one cycle. © 2010 Elsevier Ltd. All rights reserved.


Roestenberg T.,University of Twente | Roestenberg T.,Energy Conversion Technologies BV | Custers B.,University of Twente | Glushenkov M.J.,Energy Conversion Technologies BV | And 2 more authors.
Fuel | Year: 2012

The concept of using rapid adiabatic compression-expansion for doing chemical reactions promises to be an energy efficient alternative to conventional chemical reactors. In this article, the production of synthesis gas by steam methane reforming using the rapid adiabatic compression-expansion principle is investigated. This was done experimentally as well as with simulations. The experiments were done by means of a single shot reactor, with great control over the reactant composition, reactor temperature and reciprocation path. Simulations were done with an ideally stirred tank reactor model using detailed chemical kinetics. Experiments were done with different mixtures and at various initial temperatures. Simulation results show very good agreement with the experimental data, with the exception of soot formation which was not included in the simulations, and give great insight into the reaction processes that occur within the one cycle. © 2011 Elsevier Ltd. All rights reserved.


Roestenberg T.,University of Twente | Glushenkov M.,Energy Conversion Technologies BV | Kronberg A.,Energy Conversion Technologies BV | Verbeek A.A.,University of Twente | vd Meer T.H.,University of Twente
World Academy of Science, Engineering and Technology | Year: 2010

The Pulsed Compression Reactor promises to be a compact, economical and energy efficient alternative to conventional chemical reactors. In this article, the production of synthesis gas using the Pulsed Compression Reactor is investigated. This is done experimentally as well as with simulations. The experiments are done by means of a single shot reactor, which replicates a representative, single reciprocation of the Pulsed Compression Reactor with great control over the reactant composition, reactor temperature and pressure and temperature history. Simulations are done with a relatively simple method, which uses different models for the chemistry and thermodynamic properties of the species in the reactor. Simulation results show very good agreement with the experimental data, and give great insight into the reaction processes that occur within the cycle.

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