Configuration Arrangement Research Articles

Engineering of inorganic nanostructures with hierarchy of chiral geometries at multiple scales

Engineering of inorganic nanostructures with hierarchy of chiral geometries at multiple scales

A study of a flux switching linear generator with a novel speed amplified mechanism and its optimization for the maximum power output and minimum cogging force of wave energy conversion

A flux switching electromagnetic wave energy harvester with a novel speed amplified mechanism has been proposed and simulated. The novelty of the design is the relative speed of the translator with respect to the stator being doubled through a fixed pulley wheel mechanism. The output power was simulated by the ANSYS Maxwell module from input design parameters. The relationship between the input design parameters and target peak power output has been established through the simulation to understand the science. The sensitivity of the design parameters and their interactions has been studied through the Taguchi method (Design of Experiment) and response surface methodology (RSM). The design parameters of the stator and arrangement of the magnet configuration have been optimized for the maximum peak output power. The RSM model has been validated by the analysis of the variance method. The optimal results of the RSM model have been verified by the ANSYS simulation results. The RSM is proven to be a useful tool for design and optimization of the linear generator take-off unit. The cogging force has also been minimized by optimizing the dimensions of the feet on the stators using the RSM. The analysis and simulation methods have contributed to new knowledge of the flux switching electromagnetic wave energy harvester.

Structural improvement of new thiazolyl-isatin derivatives produces potent and selective trypanocidal and leishmanicidal compounds

Neglected diseases are a group of transmissible diseases that occur mostly in countries in tropical climates. Among this group, Chagas disease and leishmaniasis stand out, considered threats to global health. Treatment for these diseases is limited. Therefore, there is a need for new therapies against these diseases. In this sense, our proposal consisted of developing two series of compounds, using a molecular hybridization of the heterocyclic isatin and thiazole. The isatin and thiazole ring are important scaffold for several biological disorders, including antiparasitic ones. Herein, thiazolyl-isatin has been synthesized from respective thiosemicarbazone or phenyl-thiosemicarbazone, being some of these new thiazolyl-isatin toxic for trypomastigotes without affecting macrophages viability. From this series, compounds 2e (IC50 = 4.43 μM), 2j (IC50 = 2.05 μM), 2l (IC50 = 4.12 μM) and 2m (1.72 μM) showed the best anti-T. cruzi activity for trypomastigote form presenting a selectivity index higher than Benznidazole (BZN). Compounds 2j, 2l and 2m were able to induce a significantly labelling compatible with necrosis in trypomastigotes. Analysis by scanning electron microscopy showed that T. cruzi trypomastigote cells treated with the compound 2m from IC50 concentrations, promoted changes in the shape, flagella and surface of body causing of the parasite dead. Concerning leishmanicidal evaluation against L. amazonensis and L. infantum, compounds 2l (IC50 = 7.36 and 7.97 μM, respectively) and 2m (6.17 and 6.04 μM, respectively) showed the best activity for promastigote form, besides showed a higher selectivity than Miltefosine. Thus, compounds 2l and 2m showed dual in vitro trypanosomicidal and leishmanicidal activities. A structural activity relationship study showed that thiazolyl-isatin derivatives from phenyl-thiosemicarbazone (2a-m) were, in general, more active than thiazolyl-isatin derivatives from thiosemicarbazone (1a-g). Crystallography studies revealed a different configuration between series 1a-g and 2a-m. The configuration and spatial arrangement divergent between the two sub-series could explain the improved biological activity profile of 2a-m sub-series.

The hybrid topological longitudinal transmon qubit

We introduce a new hybrid qubit consisting of a Majorana qubit interacting with a transmon longitudinally coupled to a resonator. To do so, we equip the longitudinal transmon qubit with topological quasiparticles, supported by an array of heterostructure nanowires, and derive charge- and phase-based interactions between the Majorana qubit and the resonator and transmon degrees of freedom. Inspecting the charge coupling, we demonstrate that the Majorana self-charging can be eliminated by a judicious choice of charge offset, thereby maintaining the Majorana degeneracy regardless of the quasiparticles spatial arrangement and parity configuration. We perform analytic and numerical calculations to derive the effective qubit–qubit interaction elements and discuss their potential utility for state readout and quantum error correction. Further, we find that select interactions depend strongly on the overall superconducting parity, which may provide a direct mechanism to characterize deleterious quasiparticle poisoning processes.

Adsorption configuration of dodecylamine at gas–liquid interface and its relationship with foam stability: MD simulation and ToF-SIMS investigation

Dodecylamine (DDA) as a collector was widely applied in flotation, but its high foam stability has also been proven in many laboratories or beneficiation plants. In this work, the adsorption configuration of DDA at the gas–liquid interface and its relationship with foam stability at different pH and concentration levels was investigated to gain insights into the performance and stability mechanism of DDA. A direct, reliable, and new way to investigate the gas–liquid interface information was introduced. Froth stability experiments, surface tension measurements, time-of-flight secondary ion mass spectrometry (ToF-SIMS) measurements assisted by principal component analysis (PCA), and molecular dynamics (MD) simulation were carried out. Results revealed that the foam stability of DDA was extremely high under strong acidic condition. It increased gradually and then decreased as the DDA concentration increased, and reached the maximum at the critical micelle concentration. The positive adsorption of DDA was directly observed and confirmed by ToF-SIMS. The primary factor affecting the foam stability of DDA at different pH levels was not the adsorption capacity of DDA at the gas–liquid interface (surface tension) but the interaction intensity between the head groups of DDA and water molecules. The dominant factors affecting the foam stability of DDA at different concentrations were the adsorption capacity of DDA at the gas–liquid interface (surface tension), the interaction intensity between the head groups and water molecules, and the arrangement configuration of DDA molecules at gas–liquid interface.

A completely co-axial two-stage pulse tube cooler working at liquid hydrogen temperatures

<p indent=0mm>Pulse tube coolers, which work at liquid hydrogen temperature, are widely used in applications such as cooling infrared sensors and superconducting devices because of the advantage of no moving parts at low temperatures. Pulse tube coolers can be divided into three types according to their shape: In-line type, U-type, and co-axial type. In-line type and U-type pulse tube coolers separate the regenerator and the pulse tube, both of which are only connected through the cold end heat exchanger. For co-axial pulse tube coolers, the regenerator normally has an annular cross section surrounding the pulse tube. They are becoming increasingly popular in practice for their compactness, but the thermal contact between the regenerator and the pulse tube may affect the system performance. Few studies have been conducted on the influence of radial thermal contact, most of which are based on a single-stage pulse tube cooler and deviate from an actual co-axial type pulse tube model. For pulse tube coolers working at liquid hydrogen or a low temperature, two-stage cold heads are commonly used. In this study, theoretical analyses are conducted on the basis of a two-stage gas-coupled pulse tube cooler to investigate the influence of radial heat transfer. Based on the simulations, a completely co-axial two-stage pulse tube cooler is set up and experimental studies are carried out. Four models (corresponding to different shapes of cold heads) are constructed to theoretically analyze the mechanism based on the Sage software. Without radial thermal contact (corresponding to a two-stage U-type cold head), the temperature distributions along the pulse tubes are nonlinear, especially the 2nd stage pulse tube due to the large temperature span. Corresponding to the position of the 1st cold end, the temperature of the 2nd stage pulse tube is high to <sc>230 K;</sc> at the same axial location, the temperature difference between the 2nd stage regenerator and the pulse tube is approximately <sc>190 K.</sc> Radial heat transfer on the 2nd stage pulse tube (corresponding to 1st stage U-type and 2nd stage co-axial type cold head or the completely co-axial two-stage cold head) can cool down the 2nd stage pulse tube effectively; at the same axial location, the temperature difference between the 2nd stage regenerator and the pulse tube decreases to <sc>60 K</sc> with the 1st stage U-type and 2nd stage co-axial type cold head; such a difference also decreases to <sc>75 K</sc> with the completely co-axial two-stage cold head. Radial heat transfer increases the enthalpy flow in the 2nd pulse tube, and the expansion efficiency of the pulse tube increases from 69% to approximately 85%. The cooling performance is also improved. Meanwhile, the radial heat transfer between the 1st stage regenerator and the pulse tube (corresponding to 1st stage co-axial type and 2nd stage U-type) has a relatively minor effect on the system performance. Exergy losses are also investigated with different models. Therefore, a well-matched geometrical arrangement of the co-axial configuration is essential for achieving the optimal performance. The completely co-axial two-stage cold head not only improves the compactness but also the cooling performance. Experiments are then performed. As a result, a completely co-axial two-stage pulse tube cooler is built. A cooling power of <sc>1.2 W</sc> at <sc>20 K</sc> is obtained with <sc>223 W</sc> PV power input.

Experimental and numerical investigation in the series arrangement square cyclone separator

The square cyclone separators are widely utilized in CFB boilers to isolate tiny specks from gas flow. In present investigation, three square cyclones are fabricated, after that which is linked in series manner. The average mean particle size of 2.2 μm (magnesium particles) is utilized in experimental analysis. The estimated collection efficacy of this series arrangement cyclone is 61% at the particle size of 2.2 μm. It is 10.2% higher than the collection efficiency of single square cyclone. The pressure drop is reduced to 14.3% by this series arrangement configuration. The numerical simulation is executed for predicting the pressure drop for different inlet velocities (10 m/s to 28 m/s). The assortment efficacy is appraised for the various size of particles through the CFD analysis. The flow pattern effects are arrived for the particle size of 2.2 μm and 10 μm. The flow pattern result provides better conformity with experimental results.

Effect of Sodium Dodecyl Sulfonate on the Foam Stability and Adsorption Configuration of Dodecylamine at the Gas–Liquid Interface

In this study, the effect of sodium dodecyl sulfonate (SDS) on the foam stability of dodecylamine (DDA) and on its adsorption configuration at the gas-liquid interface was investigated. Froth stability experiments, surface tension measurements, time-of-flight secondary-ion mass spectrometry measurements, and molecular dynamics simulation calculations were performed in this investigation. The results revealed that the foam stability of DDA solution was extremely strong, and the addition of SDS could decrease the foam stability when the concentration of DDA was less than a certain value. The decrease in foam stability could be ascribed to several reasons, namely, the big cross-sectional area of SDS at the gas-liquid interface and low adsorption capacity of surfactants at the gas-liquid interface, the high surface tension, the change in the double-layer structure, the small thickness of the gas-liquid interfacial layer, the weak interaction intensity between the head groups of the surfactants and the water molecules, the strong movement ability of the water molecules around the head groups, and the sparse and less upright arrangement configuration of molecules at the gas-liquid interface. These findings can greatly help in solving the strong foam stability problem in DDA flotation and provide a method for reducing foam stability.

Performance investigations of cross flow indirect evaporative cooler

Dew point evaporative cooler is an indirect evaporative cooling (IEC) technique to lower temperature of incoming air below its wet bulb temperature and near to dew point temperature. The said technique does not involve any change in moisture content of incoming air. Performance parameters of dew point evaporative cooler are significantly influenced by configuration and structural arrangement of heat exchanger. The different arrangements of heat exchangers commonly used are counterflow, cross flow and counter-cross flow. This work presents performance investigations of cross flow indirect evaporative cooler. The cooling efficiencies and temperatures at the outlet of the cooler were investigated for different intake air temperatures and flow rates. Dew point evaporative cooling technique does not make use of compressor and harmful refrigerants hence would be a better option to conserve the environment and helps to reduce the emission of greenhouse gases.

Potency of natural and synthetic composites for ballistic resistance: A review

Mechanical characteristics of the laminated composite crafted from fabric type reinforcement perhaps inspired via the weaving method and reinforcement agent's usage due to each layer's constructional parameter. As a result, research on the arrangement configuration between bio composite and synthetic fibre for the material shape was proposed to enhance the composite structure's biodiversity and physical characteristics. Substitute for natural fibre in synthetic fibre composite works has shown the excessive capacity to be explored scientifically. The evaluation focused on the concept and essential of bio composite and the synthetic composite fabric positioned over the years from the previous studies of the preliminary researches. The sorts and features of matrix and fibre filler reinforcement materials in composites were also discussed. This assessment's main findings indicated that the composite centre relied on the weave styles and inter-ply and interplay lamination roles. Therefore, the state-of-the-art intraply for synthetic fibre and bio composite fibre in a composite shape was anticipated performing higher in mechanical energy, particularly within the application of ballistic resistance, besides decreased dependency on artificial fibre. It would ultimately suggest the excellent weave sample designs in the proper combination shape of natural and synthetic fibres embedded with polymers. The statistical results were compared with the experimental parameters available inside the literature review. The review explains approximately the studies and evolution within the enhancement of characteristic fibres reinforced polymer composites in ballistic resistance use. This paper goes over the body armour's profitable and present advancement materials, structure and development procedures, and related works on upgrading ballistic energy captivation and upgrading the mechanical tenacity for high impact resistance applications.

An investigation on the effect of PCM incorporation in refrigerator through CFD simulation

In this current era almost every household utilizes at least one refrigerator for store and preserve the food materials. Refrigerators consume a considerable amount of electricity in the domestic sector because of their wide and continuous usage. Many approaches have been introduced to reduce electrical energy consumption by the refrigerator systems. Among those approaches, Phase Change Material (PCM) incorporation in refrigerators is a novel approach.The PCM materials are capable store and discharge a huge amount of thermal energy by changing its phase from solid to liquid and vice versa. During the compressor on-mode the incorporated PCM will store the cold energy by changing its phase from liquid to solid and in the period of compressor off-mode the PCM release the cold energy and maintain the temperature inside the system until the PCM melts completely. This procedure improves the compressor off-time period and which leads to a reduction in energy consumption. This research work focusing on the numerical simulation of PCM incorporated refrigerator. The CFD simulation methodology was taken to predict the results. The objective of the work is to analyze the effect of PCM incorporation in the refrigerator, for that different configuration arrangement of PCM in refrigerators are taken for this study. The simulation works are conducted by using ANSYS fluent software. The CFD simulation results indicate that the PCM incorporation in refrigerator is a promising technique for temperature maintenance during compressor off-mode. Moreover, it is also be noted that the area coverage and the configurations arrangement of PCM are significantly affecting the temperature maintenance inside the system.

4D printed multi-stable metamaterials with mechanically tunable performance

The function of the metamaterials is determined by the configuration and spatial arrangement of the lattice microstructure. Once manufactured, the geometry and function of the metamaterials are irreversible and cannot be adapted to the environment to be variable and adjustable. This paper studies a shape-reconfigurable, functionally deployable, mechanically adjustable and reusable intelligent multi-stable metamaterial. Based on a 4D printing method that combines digital additive manufacturing technique and thermally induced shape memory polymer exhibiting significant change in modulus of elasticity, this metamaterial is created with reconfigurable, self-expandable and mechanical properties adjustable features. The macroscopic deformation and the morphology change of the lattice microstructure on the metamaterial during the compression test are analyzed using experiment and finite element method. The adjustable, selectable, and controllable for micro-lattice in the metamaterial during deformation and recovery can be achieved by microstructure gradients and composite design methods. The new micro-lattice programmable mechanical metamaterial has excellent versatility and the ability to adapt to environmental changes. This 4D printed multi-stable metamaterial has broad application prospects, such as in soft robots, smart damping interfaces, aerospace adjustable and expandable structures, and tunable function devices.

Подход к оценке заполняемости людьми мобильных средств при аварийной эвакуации из домов

Задачи геометрического проектирования (размещение, компоновка, покрытие, разбиение) состоят из оптимизационного отображения геометрической информации об объектах в соответствии с заданным критерием качества и ограничений. Геометрическая информация о геометрическом объекте состоит из трех компонент: пространственной формы, метрических параметров формы, параметров размещения, и, как правило, участвует в синтезе сложных систем. Конфигурационное пространство геометрических объектов основывается на формализации понятия геометрической информации. Отображение множества объектов в их конфигурационном пространстве в соответствии с заданным набором ограничений задает пространственную конфигурацию геометрических объектов. Введено понятие пространственной конфигурации размещения, с помощью которого построена новая модель размещения сложных объектов, объединяющих три нежестко связанных эллипса, один (основной) из которых допускает непрерывные трансляции и повороты, а два (вспомогательные) могут непрерывно. возвращаться в допустимых пределах относительно основного угла и точек их «склейки». В результате решения оптимизационной задачи синтезируется не только конфигурация размещения таких объектов, но и пространственная форма каждого из них. Осуществлено компьютерное моделирование оптимизации размещения рассмотренных в работе сложных объектов и показана эффективность предлагаемого подхода путем сравнения конфигураций размещения объектов с переменной пространственной формой и постоянными параметрами формы. Рассмотрение параметров размещения объектов, а также дополнительных параметров как независимых переменных, с помощью которых можно синтезировать новые пространственные формы объектов, позволит предлагать новые математические модели и оптимизационные методы синтеза пространственных конфигураций размещения. Дальнейшим направлением можно считать также разработку новых подходов к моделированию движения потоков людей, роботов для получения верхних оценок заполнения областей объектами. Все это увеличивает круг решаемых задач по их функциональным возможностям и может использоваться, например, при разбиении отсеков транспортных средств для перевозки грузов и их хранении, в системах распознавания образов, робототехнике и т.д.

Development of industrial single photon emission computed tomography (ISPECT)

Industrial single photon emission tomography system utilized the gamma-ray emission of radioactive tracer to images the cross-section of tracer distribution for industrial process monitoring and diagnosis. In this paper, 36 units of Sodium Iodide, NaI scintillation detectors were used to study flow in a pipelines. The detectors were arranged in two geometrical arrangement, a hexagon and nonagon configuration. The detectors are connected to three 12-channel gamma counter which is controlled by data acquisition and image reconstruction software developed for the system. The images from these two set-ups were also compared with single detector time-average system. Depending on the size of the pipeline used, i.e. for 36 detectors, the nonagon arrangement gives more information on the distribution of the tracer. Thus nonagon set-up is more suitable to be used for representing or demonstrating the image of the tracer distribution in the pipeline.

Experimental investigation of single pass solar air heater with reflectors and turbulators

In this study, the effect of incorporating turbulators and external mirrors into a newly single pass Solar Air Heater (SAH) was investigated experimentally. Aluminium cans were stacked over the absorber plate and used as turbulators to enhance the heater efficiency. The external mirrors are utilized to improve energy input to the SAH. The effect of external bottom and top mirrors on the SAH performance is studied. Three models of absorbing plates had been tested after designing them. The first one is a flat plate without cans (turbulators), the second one is a flat plate with cans in aligned arrangement configuration and the third one is flat plate with cans in staggered arrangement configuration. A comparison between the efficiency of the modified SAHs air heaters with and without reflectors and the conventional SAH were carried out. In addition, guide vanes were attached to the inlet of a heater for ensuring better distribution of air above the absorber surface. Typical ranges of air Mass Flow Rate (MFR) are employed from 0.02 to 0.05 kg/s. Results showed that the maximum daily efficiency of the proposed SAHs was about73.4% at 0.05 kg/s for staggered heater with external reflectors and guide vanes.

Boron-Induced Electronic-Structure Reformation of CoP Nanoparticles Drives Enhanced pH-Universal Hydrogen Evolution.

Even though transition-metal phosphides (TMPs) have been developed as promising alternatives to Pt catalyst for the hydrogen evolution reaction (HER), further improvement of their performance requires fine regulation of the TMP sites related to their specific electronic structure. Herein, for the first time, boron (B)-modulated electrocatalytic characteristics in CoP anchored on the carbon nanotubes (B-CoP/CNT) with impressive HER activities over a wide pH range are reported. The HER performance surpasses commercial Pt/C in both neutral and alkaline media at large current density (>100 mA cm-2 ). A combined experimental and theoretical study identified that the B dopant could reform the local electronic configuration and atomic arrangement of bonded Co and adjacent P atoms, enhance the electrons' delocalization capacity of Co atoms for high electrical conductivity, and optimize the free energy of H adsorption and H2 desorption on the active sites for better HER kinetics.

Boron‐Induced Electronic‐Structure Reformation of CoP Nanoparticles Drives Enhanced pH‐Universal Hydrogen Evolution

AbstractEven though transition‐metal phosphides (TMPs) have been developed as promising alternatives to Pt catalyst for the hydrogen evolution reaction (HER), further improvement of their performance requires fine regulation of the TMP sites related to their specific electronic structure. Herein, for the first time, boron (B)‐modulated electrocatalytic characteristics in CoP anchored on the carbon nanotubes (B‐CoP/CNT) with impressive HER activities over a wide pH range are reported. The HER performance surpasses commercial Pt/C in both neutral and alkaline media at large current density (&gt;100 mA cm−2). A combined experimental and theoretical study identified that the B dopant could reform the local electronic configuration and atomic arrangement of bonded Co and adjacent P atoms, enhance the electrons’ delocalization capacity of Co atoms for high electrical conductivity, and optimize the free energy of H adsorption and H2 desorption on the active sites for better HER kinetics.

Analysis of coolant flow distribution to the reactor core of modified TRIGA Bandung with plate-type fuel

A conversion of the TRIGA reactor Bandung has been planned by replacing fuel from rod type to plate type. The fuel replacement causes the fuel arrangement or reactor core configuration should be changed as well as the cooling system. Currently, the reactor cooling system takes place by natural convection with the flow direction from the bottom to the top of the core. The replacement of plate-type fuel with a small distance between plates causes the core cooling process to decrease, therefore to make more effective the forced convection cooling system with the direction of upward flow is required. It is expected that the cooling process will increase. The ability of the cooling system depends on flow distribution in the core at the time of reactor in operating, therefore it is necessary to analyze the distribution of coolant flow and the velocity distribution of the cooling system from the top reactor pool to the reactor core to determine that the coolant flow from the inlet pipe mostly goes to the core. The purpose of this research is to analyze the distribution of coolant flow and flow velocity to the reactor core. The analysis was carried out in a simulation using computational fluid dynamics FLUENT software by creating reactor core modeling. The result shows that the cooling water flows from above along the reactor pool, then the stored energy is reduced so that the flowing slowdown. In this case, resulting in evenly flow distribution to the reactor core.

Thermal hydraulic performance of printed circuit heat exchanger with various channel configurations and arc ribs for SCO2 Brayton cycle

Printed circuit heat exchanger (PCHE) is an efficient and high-compactness heat exchanger which can withstand extreme conditions of high temperature and high pressure, thus is a promising candidate in the nuclear, marine propulsion and power applications. In this paper, eight multi flow paths (MFP) PCHEs with different channel configurations are proposed, and seven kinds of arc ribs, including continuous and discontinuous 1/3 ribs, 2/3 ribs and semi-circular ribs, are innovatively introduced into MFP channels. Numerical investigations are carried out to explore the local and overall thermal hydraulic performances of various MFP-PCHEs in supercritical carbon dioxide (SCO2) Brayton cycle, and to figure out the effects of channel configuration and arc rib arrangement systematically. Additionally, the improvement in system performances of SCO2 Brayton cycle is further evaluated when the MFP-PCHEs are applied as recuperator. The results show that the 90° turning bend and arc rib effectively enhance the fluid disturbance by the impingement and acceleration effects, contributing to the augmentation of turbulence kinetic energy (TKE) and heat transfer level. The increase of flow path is also helpful to improve the overall thermal performance. Among all the MFP-PCHEs, the C3 (with 14 turning bends) produces the largest Nusselt number, with 16.6%–30.6% improvement compared with the straight channel (C0 case), at the same time its friction is 3.41–4.90 times of C0 case. The maximum heat exchanger effectiveness is obtained in C7 case (with 12 turning bends) at the Re of 30,000, which is 75.5%. According to the simulation results, the correlations of Nusselt number and friction factor for hot and cold channels of eight MFP-PCHEs are developed. Moreover, the adopt of semi-circular rib (R5) improves the Nusselt number by 7.3%. For a SCO2 Brayton cycle, the adoption of MFP-PCHEs can effectively enhance the system energy efficiency, and the improvement effect will reach 41.2% when the C3 configuration is applied. This research has provided critical data support for the development of MFP-PCHE in SCO2 Bryton cycle.

Assessment of CO2 desorption from 13X zeolite for a prospective TSA process

In this study, two configurations of Temperature Swing Adsorption (TSA) were assessed with the aim of evaluating their efficacy on CO2 capture on commercial adsorbent zeolite 13X within a post-combustion scenario. A fixed bed setup was employed to measure breakthrough curves from the adsorption and desorption steps. Considering a dry desulfurized flue gas stream, breakthrough curves for CO2–N2 (15/75 % v/v) in Helium were performed at 25, 50 and 75 °C. The desorption step was carried out following two TSA regeneration strategies: a two-step desorption arrangement (configuration 1) consisting of a purging phase followed by a heating-purging phase, and a one-step desorption arrangement (configuration 2) involving only the heating-purging phase. Adsorption equilibrium isotherms were also obtained for pure CO2 (25, 50, 75, 100 and 125 °C) and N2 (25, 50 and 75 °C) on zeolite 13X in the range of 0–1 bar. Finally, a mathematical model considering mass and energy differential balances was used to predict the whole adsorption-desorption history. The results obtained on breakthrough curves showed that CO2 separation from N2 on zeolite 13X is accomplished by adsorption under the studied conditions with a marked selectivity for CO2. In regards to the desorption phase, configuration 1 may not be adequate for an integration of adsorption-desorption steps once only the purge phase duplicates the desorption time as compared to the adsorption stage. On the other hand, configuration 2 is more likely to synchronize the whole adsorption—desorption process since the regeneration time was significantly reduced by this strategy. However, configuration 1 managed to obtain full CO2 recovery with all the temperatures tested during the heating step, whereas configuration 2 reached recovery values around 92%. Moderate temperatures (e.g. 125–150 °C) are feasible to be used for configuration 2 regeneration strategy so as to avoid energy penalties. Simulations were able to reproduce well the experimental breakthrough curves, even though some discrepancies were observed in the desorption histories.