Graphocrown—A Novel, Two-Dimensional Oxocarbon: A Theoretical Study

An innovative 2D-material, graphocrown, was designed and studied. Our graphocrown computations revealed a higher stability compared to previous materials studied with the same generalized C$_2$O formula. The energetic benefit of the graphocrown formation from benzenehexol was also evaluated. The structure and properties of graphocrowns with various layer arrangements were analysed and compared. In addition, the formation of potassium complexes with the new material was studied. It was found that graphocrown binds potassium better than 18-crown-6, and the intercalation of graphocrown with potassium is more favourable, compared to graphite. Finally, the band structure, as well as the mobility of the charge carriers in the graphocrown, were investigated

Micro turbinas de gas con generadores de alta velocidad para sistemas de energia locales inteligentes

At present, the share of energy collected from renewable resources and low-power units is growing, and the generation becomes distributed, having many facilities that operate in co-generation mode. That is why the construction of an energy system with distributed heterogeneous sources and the improvement of its efficiency have become widely discussed issues. This paper proposes a solution of a local smart energy systemfortheTechnoEcoPark, a sciencepark of Rostov State Transport University, Rostov, Russia. The solution aims to integrate the distributed generation facilities, including environmentally friendly renewable resources, grid infrastructure and consumers with controllable and uncontrollable load. Theapproachtothe problem is the application of a smart control systemthatmanagesgeneration, distribution and consumptionof energy in a mini-CHP-based autonomous energy system. Such smart control systems reveal the trends of optimal energydistribution in a autonomousenergysystem. The study substantiates that installation of an in-house mini-CHP can solve the task of supplying heat and powertotheTechnoEcoPark. The important advantage of the solution is a significant reduction of expenses on energy consumption as the generation costs less compared to the grid tariffs. The proposed energy supply system of the TechnoEcoPark exemplifies the integration of heterogeneous heat and power sources and consumers into a commonnetwork. The paper outlines the mechanisms of the energy system efficiency improvement. These mechanisms make it possible to provide heat and power supply services to consumers and to return the generated power into the centralized grid. The materials of the paper can be of use to the specialists and researchers who are interested in generation and distribution of energy in autonomous systems.En la actualidad, la proporción de energía recolectada de recursos renovables y unidades de baja potencia está creciendo, y la generación se distribuye, teniendo muchas instalaciones que operan en modo de cogeneración. Es por eso que la construcción de un sistema de energía con fuentes heterogéneas distribuidas y la mejora de su eficiencia se han convertido en temas ampliamente discutidos. Este documento propone una solución de un sistema de energía inteligente local para TechnoEcoPark, un parque científico de la Universidad Estatal de Transporte de Rostov, Rostov, Rusia. La solución tiene como objetivo integrar las instalaciones de generación distribuida, incluidos los recursos renovables ecológicos, la infraestructura de la red y los consumidores con carga controlable e incontrolable. El enfoque del problema es la aplicación de un sistema de control inteligente que gestiona la generación, distribución y consumo de energía en un sistema de energía autónomo basado en mini-CHP. Tales sistemas de control inteligente revelan las tendencias de distribución óptima de energía en un sistema energético autónomo. El estudio confirma que la instalación de un mini-CHP interno puede resolver la tarea de suministrar calor y energía al TechnoEcoPark. La ventaja importante de la solución es una reducción significativa de los gastos en consumo de energía, ya que la generación cuesta menos en comparación con las tarifas de la red. El sistema de suministro de energía propuesto por TechnoEcoPark ejemplifica la integración de fuentes heterogéneas de calor y energía y consumidores en una red común. El documento describe los mecanismos de mejora de la eficiencia del sistema energético. Estos mecanismos permiten proporcionar servicios de suministro de calor y energía a los consumidores y devolver la energía generada a la red centralizada. Los materiales del documento pueden ser de utilidad para los especialistas e investigadores interesados ​​en la generación y distribución de energía en sistemas autónomos

An Indacenopicene‐based Buckybowl Catcher for Recognition of Fullerenes

A novel buckybowl catcher with an extended π-surface has been synthesized via cross-coupling of two bowl shaped bromoindacenopicene moieties with a tolyl linker. The obtained catcher has been unambiguously characterized by 2D-NMR and mass spectrometry. DFT calculations indicate that the curved shape of the receptor moieties is favourable for binding fullerenes. Effective binding was confirmed for interactions with C$_{60}$ and C$_{70}$ utilizing NMR spectroscopy and isothermal titration calorimetry (ITC). The resulting binding values show a higher affinity of the catcher towards C$_{70}$ over C$_{60}$. The designed catcher demonstrated the fundamental possibility of creating sensors for spherical aromaticity

Graphocrown—A Novel, Two-Dimensional Oxocarbon: A Theoretical Study

An innovative 2D-material, graphocrown, was designed and studied. Our graphocrown computations revealed a higher stability compared to previous materials studied with the same generalized C2O formula. The energetic benefit of the graphocrown formation from benzenehexol was also evaluated. The structure and properties of graphocrowns with various layer arrangements were analysed and compared. In addition, the formation of potassium complexes with the new material was studied. It was found that graphocrown binds potassium better than 18-crown-6, and the intercalation of graphocrown with potassium is more favourable, compared to graphite. Finally, the band structure, as well as the mobility of the charge carriers in the graphocrown, were investigated

Gas micro-turbines with high-speed electric generators for local smart energy systems

At present, the share of energy collected from renewable resources and low-power units is growing, and the generation becomes distributed, having many facilities that operate in co-generation mode. That is why the construction of an energy system with distributed heterogeneous sources and the improvement of its efficiency have become widely discussed issues. This paper proposes a solution of a local smart energy systemfortheTechnoEcoPark, a sciencepark of Rostov State Transport University, Rostov, Russia. The solution aims to integrate the distributed generation facilities, including environmentally friendly renewable resources, grid infrastructure and consumers with controllable and uncontrollable load. Theapproachtothe problem is the application of a smart control systemthatmanagesgeneration, distribution and consumptionof energy in a mini-CHP-based autonomous energy system. Such smart control systems reveal the trends of optimal energydistribution in a autonomousenergysystem. The study substantiates that installation of an in-house mini-CHP can solve the task of supplying heat and powertotheTechnoEcoPark. The important advantage of the solution is a significant reduction of expenses on energy consumption as the generation costs less compared to the grid tariffs. The proposed energy supply system of the TechnoEcoPark exemplifies the integration of heterogeneous heat and power sources and consumers into a commonnetwork. The paper outlines the mechanisms of the energy system efficiency improvement. These mechanisms make it possible to provide heat and power supply services to consumers and to return the generated power into the centralized grid. The materials of the paper can be of use to the specialists and researchers who are interested in generation and distribution of energy in autonomous systems.En la actualidad, la proporción de energía recolectada de recursos renovables y unidades de baja potencia está creciendo, y la generación se distribuye, teniendo muchas instalaciones que operan en modo de cogeneración. Es por eso que la construcción de un sistema de energía con fuentes heterogéneas distribuidas y la mejora de su eficiencia se han convertido en temas ampliamente discutidos. Este documento propone una solución de un sistema de energía inteligente local para TechnoEcoPark, un parque científico de la Universidad Estatal de Transporte de Rostov, Rostov, Rusia. La solución tiene como objetivo integrar las instalaciones de generación distribuida, incluidos los recursos renovables ecológicos, la infraestructura de la red y los consumidores con carga controlable e incontrolable. El enfoque del problema es la aplicación de un sistema de control inteligente que gestiona la generación, distribución y consumo de energía en un sistema de energía autónomo basado en mini-CHP. Tales sistemas de control inteligente revelan las tendencias de distribución óptima de energía en un sistema energético autónomo. El estudio confirma que la instalación de un mini-CHP interno puede resolver la tarea de suministrar calor y energía al TechnoEcoPark. La ventaja importante de la solución es una reducción significativa de los gastos en consumo de energía, ya que la generación cuesta menos en comparación con las tarifas de la red. El sistema de suministro de energía propuesto por TechnoEcoPark ejemplifica la integración de fuentes heterogéneas de calor y energía y consumidores en una red común. El documento describe los mecanismos de mejora de la eficiencia del sistema energético. Estos mecanismos permiten proporcionar servicios de suministro de calor y energía a los consumidores y devolver la energía generada a la red centralizada. Los materiales del documento pueden ser de utilidad para los especialistas e investigadores interesados ​​en la generación y distribución de energía en sistemas autónomos

Column-averaged CO2 concentrations in the subarctic from GOSAT retrievals and NIES transport model simulations

AbstractThe distribution of atmospheric carbon dioxide (CO2) in the subarctic was investigated using the National Institute for Environmental Studies (NIES) three-dimensional transport model (TM) and retrievals from the Greenhouse gases Observing SATellite (GOSAT). Column-averaged dry air mole fractions of subarctic atmospheric CO2 (XCO2) from the NIES TM for four flux combinations were analyzed. Two flux datasets were optimized using only surface observations and two others were optimized using both surface and GOSAT Level 2 data. Two inverse modeling approaches using GOSAT data were compared. In the basic approach adopted in the GOSAT Level 4 product, the GOSAT observations are aggregated into monthly means over 5° × 5° grids. In the alternative method, the model–observation misfit is estimated for each observation separately. The XCO2 values simulated with optimized fluxes were validated against Total Carbon Column Observing Network (TCCON) ground-based high-resolution Fourier Transform Spectrometer (FTS) measurements. Optimized fluxes were applied to study XCO2 seasonal variability over the period 2009–2010 in the Arctic and subarctic regions. The impact on CO2 levels of emissions from enhancement of biospheric respiration induced by the high temperature and strong wildfires occurring in the summer of 2010 was analyzed. Use of GOSAT data has a substantial impact on estimates of the level of CO2 interanual variability