Transfer Devices Research Articles

Hierarchical and partitioned planning strategy for closed-loop devices in low-voltage distribution network based on improved KMeans partition method

To improve the reliability of power supply, this paper proposes a hierarchical and partitioned planning strategy for closed-loop devices in low-voltage distribution network. Based on the geographic location and load situation of the distribution network area, an improved KMeans partition method is used to partition the area in the upper layer. In the lower layer, an intelligent algorithm is adopted to decide the numbers and placement locations of mobile low-voltage contact boxes and mobile seamless closed-loop load transfer devices in each partition with the goal of the highest closed-loop safety, the greatest improvement in annual power outage amount and the lowest cost. Finally, the feasibility and effectiveness of the proposed strategy are proved by an example.

Numerical investigation on thermal performance enhancement mechanism of tunnel lining GHEs using two-phase closed thermosyphons for building cooling

To date, the tunnel lining GHEs have encountered issues with the relatively low heat exchange rate and the rapid decline of heat exchange rate with time. This is because the huge heat accumulation around the tunnel lining GHEs obstructs the heat transfer between the absorber pipe and the surrounding rock during the GHEs operation. Hence, to improve the heat accumulation and enhance heat exchange rate, the two-phase closed thermosyphon (TPCT), an efficient device for long-distance heat transfer, was employed in the tunnel lining GHEs to build a thermally induced channel between absorber pipes and the surrounding rock, accelerating heat transfer between the absorber pipe and surrounding rock. The heat transfer model of the tunnel lining GHEs using TPCTs was built to analyze the thermal performance enhancement mechanism of tunnel lining GHEs using TPCTs for building cooling with different thermal conductivities of primary lining concrete and surrounding rock, and convective heat transfer coefficients (CHTCs) on tunnel internal walls. The results showed that throughout a 90-day operation, TPCTs dramatically boosted the heat injection rate of tunnel lining GHEs from 16.5 to 27.0 W/m2 with an increase of 63.6%. Thermal conductivities of the primary tunnel lining concrete have significant effects on the heat injection rates of the GHEs with TPCTs. The heat injection rates increased from 27.0 to 36.4 W/m2 as thermal conductivities of the concrete increased from 1.85 to 10.7 W/m K, and the enhancement rate ranged from 63.6% to 94.7% when compared to tunnel lining GHEs without TPCTs. The enhancement rate of tunnel lining GHEs with TPCTs decreased with increasing thermal conductivity of surrounding rock and CHTC, reaching up to 122.1% under the thermal conductivity of 1.4 W/m K and CHTC of 0 W/m2 K. Overall, TPCT greatly enhances the heat injection rate of tunnel lining GHEs, implying that it is a promising technology.

Thermal inspection for viscous dissipation slip flow of hybrid nanofluid (TiO2–Al2O3/C2H6O2) using cylinder, platelet and blade shape features

Hybrid nanofluid are the modified class of nanofluids with extra high thermal performances and present different applications in automotive cooling, heat transfer devices, solar collectors, engine applications, fusion processes, machine cutting, chemical processes etc. This thermal research explores the heat transfer assessment due to hybrid nanofluid with of different shape features. The thermal inspections regarding the hybrid nanofluid model are justified with aluminium oxide and titanium nanoparticles. The base liquid properties are disclosed with ethylene glycol material. The novel impact of current model is the presentation of different shape features namely Platelets, blade and cylinder. Different thermal properties of utilized nanoparticles at various flow constraints are reported. The problem of hybrid nanofluid model is modified in view of slip mechanism, magnetic force and viscous dissipation. The heat transfer observations for decomposition of TiO2–Al2O3/C2H6O2 is assessed by using the convective boundary conditions. The shooting methodology is involved for finding the numerical observations of problem. Graphical impact of thermal parameters is observed for TiO2–Al2O3/C2H6O2 hybrid decomposition. The pronounced observations reveal that thermal rate enhanced for blade shaped titanium oxide-ethylene glycol decomposition. The wall shear force reduces for blade shaped titanium oxide nanoparticles.

(109) Transdermally Powered, MRI Conditional Pump-in-Reservoir Implant Inflator System: Preclinical Studies

Abstract Introduction Inflatable medical implants have been used in the treatment of erectile dysfunction and both urinary and fecal incontinence. However, commercially available devices have required manual operation, which present difficulty in their use for patients lacking strength and dexterity to use such pumps. In women with urinary incontinence, anatomical constraints limit the use of manually operable inflatable devices. Objective The aim of this study was to conduct preclinical testing of a wirelessly powered inflatable medical implant system consisting of a medical provider software application, a patient external controller, and a magnetic resonance imaging (MRI)-conditional nonferrous pump-in-reservoir implant system. Methods An inflatable medical implant system was designed and tested. Serial prototypes designs included a nonferrous, reservoir-submerged package containing electronic motor and pump with piezoelectric valves, and an external controller resembling a TV remote. The implant system was evaluated after being connected to commercially available penile prosthetic cylinders. Power settings were tested at various thresholds; testing requirements considered to be clinically applicable were set as fluid transfer of 60 ml of normal saline at 25 psi within 45 seconds. The effectiveness of power transmission across the human abdominal wall was tested using an interface of a steak slab placed between the external controller and the implant system. Results Device testing at 24 and 36 volts determined that the latter was more efficient and afforded a smaller motor and pump package. Full penile cylinder inflation was recorded at 23 seconds. Effective power transmission was demonstrated across steak slabs. Conclusions A nonferrous pump-in-reservoir medical implant inflator system for penile prostheses is legitimate. It offers an improvement over manually operated inflatable devices, and because it eliminates a manual pump component there is feasibility of constructing a modified device for fluid transfer of urethral cuffs for treating urinary incontinence in men and women. The pump package within the reservoir is advantageous as a heatsinking feature that may limit implant overheating. Finally, the device design without ferrous components affords MRI compatibility. Disclosure Any of the authors act as a consultant, employee or shareholder of an industry for: Boston Scientific, Novartis

Impact of Aluminum Modification on the Dielectric Properties of Graphene Oxide Membrane: Different Al Source

The high dielectric constant and low dielectric loss of Graphene oxide (GO) membranes made them good dielectric separator membranes for developing high performance energy storage and transfer devices. Better understanding and be able to tailor the dielectric properties of the GO membrane is crucial for its dielectric applications. The interaction variation of Al3+ from different source with the functional group on the GO sheets could lead to different modification effects on the dielectric properties of GO membranes. Here, the Al3+-modification, where aluminum metal foil, chloride salt, and alumina serve as different Al3+ source, are applied to tailor the dielectric properties of GO membranes. The dielectric constant and dielectric loss of GO and Al3+ modified GO(AGO) in the frequency range from 0.01 Hz to 105 Hz is studied. The capacitance of a simple dielectric capacitor fabricated by sandwich the GO and AGO membrane in between carbon paper are evaluated to estimate the effect of dielectric separator membrane variation on the electrochemical performance of the capacitor. This study provides a facile and effective strategy to tailor the dielectric property of GO membrane and demonstrate the possibility of designing dielectric GO membrane with controllable dielectric performance.

RANCANG BANGUN SISTEM KONTROL MINIATUR ALAT PEMINDAH MATERIAL PADA PROSES DISTRIBUSI BIJIH NIKEL MENGGUNAKAN PLC

This research aims to make a miniature ore material transfer tool automatically using Omron PLC. The way this tool works is that when the start button is pressed, motor 1 will move the apron containing the ore to be taken to the 3 storage barrels to be filled alternately. In each storage barrel, a proximity sensor is installed to detect the level of ore filling. On the rails that are passed by the apron, there are three limit switches that serve as indicators that the position of the apron is right above the storage barrel, then motor 2 will open the valve on the apron so that the ore on the apron falls into the reservoir. From this research, we have succeeded in obtaining an automatic control system for a miniature material transfer device in the ore distribution process.

116 A Performance Testing Protocol for Closed System Transfer Devices Used During Pharmacy Compounding and Administration of Hazardous Drugs

Abstract Cytotoxic and other hazardous drugs, whilst potentially therapeutic to patients, pose an occupational exposure hazard to healthcare workers during compounding and administration. However, occupational exposure to these drug compounds can be reduced with the use of closed system transfer devices (CSTDs) designed to prevent the escape of aerosol, liquid or vapour from a hazardous drug vial. In 2015 NIOSH developed a test procedure to assess the containment performance of CSTDs using an isopropanol-water challenge agent and infra-red detection. However, this protocol could not be used to assess devices using air filtration technology. HSE and BSTL therefore developed a modified procedure, using less volatile challenge agents and measurement using thermal desorption (TD) and gas chromatography-mass spectrometry (GC-MS), which could be used to assess all CSTD types. Unlike the NIOSH procedure this approach does not give a ‘real-time’ result but shows significantly greater sensitivity with the challenge agents used; typically being able to detect an airborne concentration of less than 1 part per billion (ppb). Testing carried out using a solution of 2-phenoxyethanol as the challenge agent showed no evidence of release with three of the four CSTDs tested; two barrier devices and one using air filtration. The tests also showed limits of detection to be dependent not only on the analytical procedure but on the effectiveness of the cleaning regime used to decontaminate the exposure chamber between tests.

Near-1: the evaluation of usability and task load demand of a motorized lifter for patient transfer

Purpose Despite the proven benefits of motorized lifting devices in reducing the physical stresses experienced by nurses during patient transfers, the low adoption of these devices remains limited. The study aimed to assess the perceptions of nurses regarding the new motorized lifting device (NEAR-1) in terms of their perceived workload and usability during patient transfers. Materials and Methods A cross-sectional study was conducted to evaluate the perceptions of nurses (n = 45) and students (n = 6) when performing patient transfers from bed to wheelchair and vice versa using the NEAR-1 compared to an existing floor lift, walking belt, and manual transfer. Participants filled out surveys evaluating the perceived task demands and usability of the NEAR-1, as well as open-ended interviews. Results The use of the NEAR-1 significantly reduced the mean of all NASA-TLX constructs (p < 0.001) when compared to manual transfer. When comparing with other existing lifting devices, the NEAR-1 (24.4 ± 3.0) recorded the lowest overall score of NASA-TLX perceived workload, followed by the existing floor lift (26.1 ± 11.6), a robotic-assisted transfer device (28.3 ± 6.8) and mechanical floor lift (31.5 ± 9.3). The participants recorded a usability score of 76.86, indicating positive perceptions of the nurses towards the technology. Conclusions Overall, the NEAR-1 has the potential to reduce the physical stresses on nurses and decrease the likelihood of work-related musculoskeletal disorders (WMSDs). The NEAR-1 may represent a promising new intervention for transferring patients that is capable of minimizing the nurses’ perceived workload in clinical and non-clinical settings. IMPLICATIONS FOR REHABILITATION: The NEAR-1 motorized lifting device reduced perceived workload for nurses while handling and transferring patients between a bed and wheelchair. The nurses recorded a usability score of 76.86 for the NEAR-1, reflecting their positive perceptions towards the technology. The new device has the potential to reduce the physical stress on nurses and decrease the incidence of work-related musculoskeletal disorders.

Biomimetic Micropillar Wick for Enhanced Thin-Film Evaporation

Sustainable liquid cooling solutions are recognized as the future of thermal management in the chip industry. Among them, phase change heat transfer devices such as heat pipes and vapor chambers have shown tremendous potential. These devices rely on the physics of capillary-driven thin-film evaporation, which is inherently coupled with the design and optimization of the evaporator wicks used in these devices. Here, we introduce a biomimetic evaporator wick design inspired by the peristome of the Nepenthes alata that can achieve significantly enhanced evaporative cooling. It consists of an array of micropillars with multiple wedges along the sidewall of each micropillar. The efficacy of the wedged micropillar is evaluated based on a validated numerical model on the metrics of dryout heat flux and effective heat transfer coefficient. The wedge angle is chosen such that wedged micropillars cause liquid filaments to rise along the micropillar vertical walls. This results in a significant increase in thin-film area for evaporation. Additionally, the large mean curvature of the liquid meniscus produces strong capillary pumping pressure and simultaneously, the wedges increase the overall permeability of the wick. Consequently, our model predicts that the wedged micropillar wick can attain ∼234% enhancement of dryout heat flux compared to a conventional cylindrical micropillar wick of similar geometrical dimensions. Moreover, the wedged micropillars can also attain a higher effective heat transfer coefficient under dryout conditions, thus outperforming the cylindrical micropillar in terms of heat transfer efficiency. Our study provides insight into the design and capability of the biomimetic wedged micropillars as an efficient evaporator wick for various thin-film evaporation applications.

Closed System Transfer Devices (CSTDs): Understanding Potential Over- and Under- Dosing of Liquid Vial Drug Products and How to Generally Mitigate

Closed system transfer devices (CSTDs) are a major challenge for drug manufacturers to assess and assure drug compatibility and acceptable dosing accuracy for a range of clinical administration strategies. In this article, we systematically investigate parameters affecting the loss of product during transfer by CSTDs from vials to infusion bags. We show that liquid volume loss increases with vial size, vial neck diameter, and solution viscosity - while dependent on stopper design. We further compared CSTDs’ performance with a traditional syringe transfer and learned that loss is larger for CSTDs than for syringe transfer. Based on experimental data, a statistical model was developed to predict drug loss upon transfer by CSTDs. The model predicted that, for single dose vials with USP<1151> conforming overfill, a complete extraction and transfer of the full dose can be assured for a broad range of CSTDs, product viscosities, and vial types (2R, 6R, 10R, 20R) if a flush (of syringe, syringe adaptor, bag spike) is performed. The model also predicted that complete transfer cannot be achieved for fill volumes ≤ 2.0 mL. For multi-dose vials and pooling of several vials, respectively, the effective dose transfer (i.e., ≥ 95%) for all CSTDs tested was predicted to be achieved if a minimum of 5.0 mL is transferred.

Navigational water resistance analysis and optimization of the gondola of unmanned boat retractable device

Combining the characteristics of the existing transfer slideway and double-point hanging type two retractable devices, this paper proposes a multiple-point hoisting, fast transfer, and retractable device. According to the viscous flow theory, one-way fluid-structure interaction simulation is used for the gondola structure of the unmanned boat retractable device. Considering the influencing factors of the width of the gondola, the void ratio, the shape and distribution of the void, and the deployment angle of the guardrail, the navigation water resistance of each model is compared and analyzed, and the optimal design of the gondola device is discussed. The results show that the increase of the top width and the decrease of the front-end void ratio will lead to an increase in the water resistance of the gondola; under the same porosity, the rectangular shape performs better than the circular shape, and the smaller interval between the rectangles is more conducive to reducing the water resistance of the gondola; the increase in the angle of the side door guardrail of the gondola will lead to an increase in the navigation water resistance; the final optimized design of the gondola device meets the strength requirements under extreme conditions of high sailing speed.

Permeability in wearable point-of-care systems

A soft, hermetic liquid metal-based seal is developed to encapsulate electrical components in stretchable systems. The packaging material allows stretchability and prevents the permeation of reactive substances both inside and outside the liquid metal-based seal. Electrical performance of stretchable components in a water-based lithium-ion battery with and without the liquid-metal-based seal is well explicated under different conditions. The permeability is also validated in both a phase-change-based heat transfer device and a wireless communication device. Finally, we provide new insights into the remaining challenges and future directions of permeability in wearable point-of-care systems. A soft, hermetic liquid metal-based seal is developed to encapsulate electrical components in stretchable systems. The packaging material allows stretchability and prevents the permeation of reactive substances both inside and outside the liquid metal-based seal. Electrical performance of stretchable components in a water-based lithium-ion battery with and without the liquid-metal-based seal is well explicated under different conditions. The permeability is also validated in both a phase-change-based heat transfer device and a wireless communication device. Finally, we provide new insights into the remaining challenges and future directions of permeability in wearable point-of-care systems.

Optimization of bifurcating channel cooling system for double inclined conductive panel system under inclined magnetic field

A novel cooling system with wavy branching channels is proposed considering nano-enhanced magnetic field effects for thermal management of double inclined conductive panels. Thermal performance assessment is conducted by varying Reynolds number (250≤Re≤1000), Hartmann number (0≤Ha≤400), magnetic field inclination (250≤γ≤1000), amplitude (0≤Af≤0.4) and wave number (1≤Nf≤12). As the cooling fluid, water with Ag–MgO hybrid nanoparticles is considered. Temperature drops of 4.5 °C and 2.6 °C are obtained with the highest Re for left inclined panel (p1) and right inclined panel (p2). As the vortex distribution is highly affected for the wavy branching channels by the magnetic field strength, its impact on the cooling performance for p1 and p2 are different. It shows a favorable impact for panel p2 while average Nusselt number (Nu) increments become 10% and 6.3% when using flat and wavy branching channels at the highest magnetic field strength. For panel p1, varying inclination of magnetic field results in average surface temperature drop of 1.6 °C for wavy channel. The optimum value of wave number in the corrugated branching channel is Nf=2 for achieving the highest cooling performance while higher amplitudes of corrugation has favorable impacts on the cooling for each of the panels. As compared to un-cooled panel configuration, utilization of flat branching channel with nano-enhanced magnetic field results in 47.4 °C and 48.9 °C surface temperature drops for panels p1 and p2. Optimization based on COBYLA is utilized to achieve additional temperature drops as compared to parametric computational fluid dynamics. The optimum values of (Ha, γ, Af) are obtained as (40, 89, 0.04) at Re=100 and (40, 60.8, 0.0038) at Re=1000. The proposed single cooling method with wavy branching channel under nano-enhanced magnetic field can be used and further developed for effectively cooling of photo-voltaics with inclined arrangement, electronic cooling and many other heat transfer devices.

Polariton hybridization phenomena on near-field radiative heat transfer in periodic graphene/α-MoO3 cells.

Coupling of surface plasmon polaritons (SPPs) supported by graphene and hyperbolic phonon polaritons (HPPs) supported by hyperbolic materials (HMs) could effectively promote photon tunneling, and hence the radiative heat transfer. In this work, we investigate the polariton hybridization phenomena on near-field radiative heat transfer (NFRHT) in multilayer heterostructures, which consist of periodic graphene/α-MoO3 cells. Numerical results show that increasing the graphene/α-MoO3 cells can effectively enhance the NFRHT when the vacuum gap is less than 50 nm, but suppresses the enhanced performance with larger gap distance. This depends on the coupling of SPPs and HPPs in the periodic structure, which is analyzed by the energy transmission coefficients distributed in the wavevector space. The influence of the thickness of the α-MoO3 film and the chemical potential of graphene on the NFRHT is investigated. The findings in this work may guide designing high-performance near-field energy transfer and conversion devices based on coupling polaritons.

High-performance anti-reflection micro-forests on aluminium alloy fabricated by laser induced competitive vapor deposition.

Surfaces with strong anti-reflection properties have attracted the wide attention of scientists and engineers due to their great application potential in many fields. Traditional laser blackening techniques are limited by the material and surface profile, which are not able to be applied to film and large-scale surfaces. Inspired by the rainforest, a new design for anti-reflection surface structures was proposed by constructing micro-forests. To evaluate this design, we fabricated micro-forests on an Al alloy slab by laser induced competitive vapor deposition. By controlling the deposition of the laser energy, the surface can be fully covered by forest-like micro-nano structures. The porous and hierarchical micro-forests performed a minimum and average reflectance of 1.47% and 2.41%, respectively, in the range of 400-1200 nm. Different from the traditional laser blackening technique, the micro-scaled structures were formed due to the aggregation of the deposited nanoparticles instead of the laser ablation groove. Therefore, this method would lead to little surface damage and can also be applied to the aluminum film with a thickness of 50 µm. The black aluminum film can be used to produce the large-scale anti-reflection shell. Predictably, this design and the LICVD method are simple and efficient, which can broaden the application of the anti-reflection surface in many fields such as visible-light stealth, precision optical sensors, optoelectronic devices, and aerospace radiation heat transfer device.

High-performance electrodeposited copper wicks for heat-spreading vapor chambers

A capillary wick structure is a key component for producing the capillary pressure that drives two-phase circulation in phase-change heat transfer devices such as heat pipes and vapor chambers. This study examines the capillary performance of a porous Cu wick structure fabricated using a new electrodeposition process. This Cu wick exhibits large channels generated by hydrogen bubbles and small pores in the dendritic Cu deposits resulting from high-current electrodeposition. The capillary wick performance can be effectively enhanced by adjusting the morphology of the dendritic Cu deposits. Dendritic Cu wicks with different porous features are prepared using different electrodeposition current densities and Cu sulfate concentrations in the electrolyte. A capillary rate-of-rise method is used to assess the liquid permeability (K), effective pore radius (Reff), and capillary performance (K/Reff) of dendritic Cu wicks with deionized wateras the working fluid. The Cu wick is then thermally treated at 700 °C in ambient N2 for 90 min to improve its structural integrity. Despite partial welding occurring between the fine Cu dendrites, the Cu wick shows a superior K/Reff of 1.5 ± 0.06 μm and excellent structural stability. The high capillary performance can enhance the mass transport rate and effective transport distance of the working liquid in vapor chambers for high-density and large-area heat dissipation applications. A vapor chamber integrated with an electrodeposited Cu wick demonstrates excellent heat-spreading characteristics, with a vapor thermal conductivity of up to 6500 W/m⋅K.

A comprehensive review of heat transfer enhancement of heat exchanger, heat pipe and electronic components using graphene

The industrial growth of any country depends on energy source availability and utilization of energy for various applications. The heat exchanger is a heat transfer device which is most widely used in various applications for effective heat transfer between cold and hot fluids. Any improvement in heat transfer results in enhancement in overall performance of the device. Hence various techniques are used to improve the heat transfer. The solid particles which have higher thermal conductivity and can be used to improve the heat transfer between hot and cold fluids. The thermal conductivity of graphene-based nanoparticle is high, and it has low erosion, corrosion, higher stability, etc. Hence graphene-based nanoparticle is chosen in various heat transfer applications. The use of graphene-based nanoparticles increases the heat transfer and hence it can reduce the size of the heat transfer equipment. This paper critically reviews various applications of graphene in different types of heat exchangers, electronic devices challenges and opportunities, by highlighting the advantages of using graphene.

Experimental Demonstration of Compact Polymer Mass Transfer Device Manufactured by Additive Manufacturing with Hydrogel Integration to Bio-Mimic the Liver Functions.

In this paper, we designed and demonstrated a stimuli-responsive hydrogel that mimics the mass diffusion function of the liver. We have controlled the release mechanism using temperature and pH variations. Additive manufacturing technology was used to fabricate the device with nylon (PA-12), using selective laser sintering (SLS). The device has two compartment sections: the lower section handles the thermal management, and feeds temperature-regulated water into the mass transfer section of the upper compartment. The upper chamber has a two-layered serpentine concentric tube; the inner tube carries the temperature-regulated water to the hydrogel using the given pores. Here, the hydrogel is present in order to facilitate the release of the loaded methylene blue (MB) into the fluid. By adjusting the fluid's pH, flow rate, and temperature, the deswelling properties of the hydrogel were examined. The weight of the hydrogel was maximum at 10 mL/min and decreased by 25.29% to 10.12 g for the flow rate of 50 mL/min. The cumulative MB release at 30 °C increased to 47% for the lower flow rate of 10 mL/min, and the cumulative release at 40 °C climbed to 55%, which is 44.7% more than at 30 °C. The MB release rates considerably increased when the pH dropped from 12 to 8, showing that the lower pH had a major impact on the release of MB from the hydrogel. Only 19% of the MB was released at pH 12 after 50 min, and after that, the release rate remained nearly constant. At higher fluid temperatures, the hydrogels lost approximately 80% of their water in just 20 min, compared to a loss of 50% of their water at room temperature. The outcomes of this study may contribute to further developments in artificial organ design.

Effect of Thermal Radiation and Variable Viscosity on Bioconvective and Thermal Stability of Non-Newtonian Nanofluids under Bidirectional Porous Oscillating Regime

The bioconvective flow of a Jeffrey fluid conveying tiny particles under the effect of an oscillating stretched bidirectional surface is considered in this paper. The effects of thermal radiation and a porous medium are also investigated. The Cattaneo–Christov diffusion theories are used to analyze the heat and mass transfer phenomena. The activation energy effects are included in the concentration equation. The solved dimensionless equations system is established, based on non-dimensional variables. The analytical findings are evaluated using the homotopic analysis technique. The convergence of solutions is ensured. The results are validated by already available published findings and a good concordance is encountered. The fundamental physical aspect of flow parameters is graphically evaluated. The main results reveal that the velocity is reduced by increasing the permeability of the porous medium. An increase in the temperature occurs when the viscosity of the fluid is varied. The obtained results can be useful in thermal systems, energy production, heat transfer devices, solar systems, biofuels, fertilizers, etc.

Non‐Hermitian Control of Topological Scattering Singularities Emerging from Bound States in the Continuum

AbstractLeveraging topological properties in the response of electromagnetic systems can greatly enhance their potential. Although the investigation of singularity‐based electromagnetics and non‐Hermitian electronics has considerably increased in recent years in the context of various scattering anomalies, their topological properties have not been fully assessed. In this work, it is theoretically and experimentally demonstrated that non‐Hermitian perturbations around bound states in the continuum can lead to singularities of the scattering matrix, which are topologically nontrivial and comply with charge conservation. The associated scattering matrix poles, zeros, and pole‐zero pairs delineate extreme scattering events, including lasing, coherent perfect absorption, and absorber‐lasers. The presented framework enables a recipe for generation, annihilation, and addition of these singularities in electric circuits, with potential for extreme scattering engineering across a broad range of the electromagnetic spectrum for sensing, wireless power and information transfer, polarization control, and thermal emission devices.