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Dr. Raluca Felseghi
Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, Romania

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Research Keywords & Expertise

0 Clean Energy Technologies
0 Green Building
0 Hydrogen Fuel Cells
0 Sustainability Initiatives
0 Renewable and Sustainable Energy

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Clean Energy Technologies
Green Building
Hydrogen Fuel Cells

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Short Biography

Dr. Raluca-Andreea Felseghi is an Scientific Researcher. She obtained a Ph.D. Diploma in a fundamental field: Engineering Sciences, Civil Engineering within the Technical University of Cluj-Napoca, Romania. The main research direction was the concern related to the implementation of hydrogen fuel cell technologies in energy-efficient buildings. She is currently working at the "Ştefan cel Mare" University of Suceava, Romania, being involved in a research project that aims to integrate hydrogen energy into the electricity supply systems of the electric vehicle charging stations (SMiLE-EV). Her main fields of interest are energy efficiency of buildings, stationary application of renewable energies, fuel cell hydrogen technology, hybrid power generation systems, the impact of alternative energies on the environment. She is president of the Scientific, Innovation and Technical Education Commission and secretary of the Romanian Association of Building Services Engineering-Transylvania Branch, member of Romanian Association for Hydrogen Energy-secretary of the Cluj-Napoca Branch and member of Women in Green Hydrogen community (https://women-in-green-hydrogen.net/raluca-andreea-felseghi/

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Conference
online
Date: 17-19 March 2021
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Raluca Felseghi
Conference
Vienna, Austria
Date: 7-11 December 2020
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Raluca Felseghi
Journal article
Published: 31 July 2021 in Materials
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In this work, authors have designed, constructed and tested a new kind of partially superconducting axial flux machine. This model is based on the magnetic flux concentration principle. The magnetic field creation part consists of the NbTi superconducting solenoid and two YBaCuO plates. A theoretical study is conducted of an extrapolated superconducting inductor for low-temperature superconducting and high-temperature superconducting solenoids. The optimization of the inductor is carried out in order to increase the torque and the power density as well. This improvement is done by changing the shape of the elements which form the superconducting inductor. Finally, a prototype is realized, and tested.

ACS Style

Brahim Douma; Bilal Abderezzak; Elhadj Ailam; Raluca-Andreea Felseghi; Constantin Filote; Catalin Dumitrescu; Maria Raboaca. Design Development and Analysis of a Partially Superconducting Axial Flux Motor Using YBCO Bulks. Materials 2021, 14, 4295 .

AMA Style

Brahim Douma, Bilal Abderezzak, Elhadj Ailam, Raluca-Andreea Felseghi, Constantin Filote, Catalin Dumitrescu, Maria Raboaca. Design Development and Analysis of a Partially Superconducting Axial Flux Motor Using YBCO Bulks. Materials. 2021; 14 (15):4295.

Chicago/Turabian Style

Brahim Douma; Bilal Abderezzak; Elhadj Ailam; Raluca-Andreea Felseghi; Constantin Filote; Catalin Dumitrescu; Maria Raboaca. 2021. "Design Development and Analysis of a Partially Superconducting Axial Flux Motor Using YBCO Bulks." Materials 14, no. 15: 4295.

Research article
Published: 22 June 2021 in International Journal of Energy Research
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This research paper presents the case study results on generating electricity based on solar resources for an existing residential building with conventional electric energy demand located in Cluj-Napoca, Romania. The solar energy system proposed for analysis has provided the back-up energy through two types of state-of-the-art energy storage technologies: (a) Tesla batteries and (b) hydrogen vector energy, obtained electrolytically on-site. Starting from the main imposed condition that all the building's electric energy demand be provided by the solar resource, sustainable technical solutions for renewable energy storage are of crucial importance for the successful implementation of power systems based on clean solar energy. New solar energy storage technologies are imperative for the superior harnessing of solar resources at the production site, whether it is short-term energy storage such as Tesla batteries or long-term energy storage such as hydrogen energy vector. The main objective of this work is to assess the feasibility of the proposed grid-independent energy system, which is pairing solar power to sustainable energy storage technologies within an existing residential building with conventional electric energy demand. This study aims to evaluate the optimal sizing of the solar units implemented in the design along with the optimal back-up energy storage capacities to fulfil the building's daily electricity demand in an uninterrupted mode. This article investigates the possibility of supplying 100% solar power to the existing residential building with conventional electric energy demand under constraints and limitations conditions due to the stochastic nature of building electricity consumption, volatile and intermittent nature of solar resources, local meteorological conditions specific to the building's placement and space limitations for the positioning of the photovoltaic panels. The average daily load that has been calculated for the building has a value of 6.50 kWh. To reach the proposed target of integral solar power supply, photovoltaic panels with an installed power of 7.84 kWp paired with a Tesla batteries bank with a storage capacity of 7.4 kWh are needed, and in the case of storing solar energy in the form of electrolytic hydrogen it is necessary to pair the photovoltaic panels with an installed power of 15.12 kWp, 3 kW electrolyser, 2 kW fuel cell and H2 tank of 7 kg. The annual energy demand of 2369 kWh is achieved of 43.27% directly from photovoltaic panels and 56.73% through the back-up energy in case of pairing the batteries as an energy storage medium, and in case of pairing hydrogen as an energy vector, 41.53% is powered directly by photovoltaic panels and 58.46% comes from the energy reserve stored through hydrogen technologies. The environmental analysis highlights an average decrease of up to 85% in carbon dioxide emissions generated by the implementation of clean energy systems analysed compared to the grid electricity. Also, the results of this study show that the investment costs in photovoltaic panels and storage systems are still high, limiting their use in residential buildings, but we are witnessing technological developments to improve the performance and durability of these electricity storage solutions at low costs, which will allow them to be marketed on a large scale, particularly widespread for residential applications.

ACS Style

Ioan Așchilean; Nicoleta Cobîrzan; Andrei Bolboaca; Radu Boieru; Raluca‐Andreea Felseghi. Pairing solar power to sustainable energy storage solutions within a residential building: A case study. International Journal of Energy Research 2021, 1 .

AMA Style

Ioan Așchilean, Nicoleta Cobîrzan, Andrei Bolboaca, Radu Boieru, Raluca‐Andreea Felseghi. Pairing solar power to sustainable energy storage solutions within a residential building: A case study. International Journal of Energy Research. 2021; ():1.

Chicago/Turabian Style

Ioan Așchilean; Nicoleta Cobîrzan; Andrei Bolboaca; Radu Boieru; Raluca‐Andreea Felseghi. 2021. "Pairing solar power to sustainable energy storage solutions within a residential building: A case study." International Journal of Energy Research , no. : 1.

Journal article
Published: 02 June 2021 in Sustainability
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Alternative energy resources have a significant function in the performance and decarbonization of power engendering schemes in the building application domain. Additionally, “green buildings” play a special role in reducing energy consumption and minimizing CO2 emissions in the building sector. This research article analyzes the performance of alternative primary energy sources (sun and hydrogen) integrated into a hybrid photovoltaic panel/fuel cell system, and their optimal synergy to provide green energy for a green building. The study addresses the future hydrogen-based economy, which involves the supply of hydrogen as the fuel needed to provide fuel cell energy through a power distribution infrastructure. The objective of this research is to use fuel cells in this field and to investigate their use as a green building energy supply through a hybrid electricity generation system, which also uses photovoltaic panels to convert solar energy. The fuel cell hydrogen is supplied through a distribution network in which hydrogen production is outsourced and independent of the power generation system. The case study creates virtual operating conditions for this type of hybrid energy system and simulates its operation over a one-year period. The goal is to demonstrate the role and utility of fuel cells in virtual conditions by analyzing energy and economic performance indicators, as well as carbon dioxide emissions. The case study analyzes the optimal synergy between photovoltaic panels and fuel cells for the power supply of a green building. In the simulation, an optimally configured hybrid system supplies 100% of the energy to the green building while generating carbon dioxide emissions equal to 11.72% of the average value calculated for a conventional energy system providing similar energy to a standard residential building. Photovoltaic panels account for 32% of the required annual electricity production, and the fuel cells generate 68% of the total annual energy output of the system.

ACS Style

Raluca-Andreea Felseghi; Ioan Așchilean; Nicoleta Cobîrzan; Andrei Bolboacă; Maria Raboaca. Optimal Synergy between Photovoltaic Panels and Hydrogen Fuel Cells for Green Power Supply of a Green Building—A Case Study. Sustainability 2021, 13, 6304 .

AMA Style

Raluca-Andreea Felseghi, Ioan Așchilean, Nicoleta Cobîrzan, Andrei Bolboacă, Maria Raboaca. Optimal Synergy between Photovoltaic Panels and Hydrogen Fuel Cells for Green Power Supply of a Green Building—A Case Study. Sustainability. 2021; 13 (11):6304.

Chicago/Turabian Style

Raluca-Andreea Felseghi; Ioan Așchilean; Nicoleta Cobîrzan; Andrei Bolboacă; Maria Raboaca. 2021. "Optimal Synergy between Photovoltaic Panels and Hydrogen Fuel Cells for Green Power Supply of a Green Building—A Case Study." Sustainability 13, no. 11: 6304.

Journal article
Published: 27 May 2021 in Materials
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This article presents the experimental results obtained by the testing an experimental model of water distribution which is flexible and above-head mounted on a seismic platform, and their validation in a theoretical manner, but also by the Finite Element Method, using the ANSYS simulation program. This type of system shown by the experimental model is desired to be used in practice not only in seismic areas, but also in the areas of heavy road transport, landslides, etc. thorugh the use thereof in the most stressed points of the network (hearth entry/exit, before/after an elbow, etc.) but also on long routes, at optimal distances. The results achieved are related to glass- reinforced plastic (GRP) pipes with a nominal diameter DN = 250 mm, but conclusions may be drawn starting from these to help future research where the mass of the earth is desired to be taken into account. The present results are comprehensive for buried pipes operated dynamically or seismically at low-medium intensity, as this type of earthquake occurs more and more often in Europe. The experimental tests in this article do not have the characteristics necessary for a high intensity seismic action (above 5° Richter).

ACS Style

Ana Ancaș; Ioan Așchilean; Mihai Profire; Florin Țurcanu; Raluca-Andreea Felseghi. Experimental Study on the Behaviour of Seismic Actions on a Flexible Glass-Reinforced Plastic Structure Used in Water Transport Pipes. Materials 2021, 14, 2878 .

AMA Style

Ana Ancaș, Ioan Așchilean, Mihai Profire, Florin Țurcanu, Raluca-Andreea Felseghi. Experimental Study on the Behaviour of Seismic Actions on a Flexible Glass-Reinforced Plastic Structure Used in Water Transport Pipes. Materials. 2021; 14 (11):2878.

Chicago/Turabian Style

Ana Ancaș; Ioan Așchilean; Mihai Profire; Florin Țurcanu; Raluca-Andreea Felseghi. 2021. "Experimental Study on the Behaviour of Seismic Actions on a Flexible Glass-Reinforced Plastic Structure Used in Water Transport Pipes." Materials 14, no. 11: 2878.

Journal article
Published: 21 May 2021 in Mathematics
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The present study accentuated a hybrid approach to evaluate the impact, association and discrepancies of demographic characteristics on a student’s job placement. The present study extracted several significant academic features that determine the Master of Business Administration (MBA) student placement and confirm the placed gender. This paper recommended a novel futuristic roadmap for students, parents, guardians, institutions, and companies to benefit at a certain level. Out of seven experiments, the first five experiments were conducted with deep statistical computations, and the last two experiments were performed with supervised machine learning approaches. On the one hand, the Support Vector Machine (SVM) outperformed others with the uppermost accuracy of 90% to predict the employment status. On the other hand, the Random Forest (RF) attained a maximum accuracy of 88% to recognize the gender of placed students. Further, several significant features are also recommended to identify the placement of gender and placement status. A statistical t-test at 0.05 significance level proved that the student’s gender did not influence their offered salary during job placement and MBA specializations Marketing and Finance (Mkt&Fin) and Marketing and Human Resource (Mkt&HR) (p > 0.05). Additionally, the result of the t-test also showed that gender did not affect student’s placement test percentage scores (p > 0.05) and degree streams such as Science and Technology (Sci&Tech), Commerce and Management (Comm&Mgmt). Others did not affect the offered salary (p > 0.05). Further, the χ2 test revealed a significant association between a student’s course specialization and student’s placement status (p< 0.05). It also proved that there is no significant association between a student’s degree and placement status (p > 0.05). The current study recommended automatic placement prediction with demographic impact identification for the higher educational universities and institutions that will help human communities (students, teachers, parents, institutions) to prepare for the future accordingly.

ACS Style

Deepak Kumar; Chaman Verma; Pradeep Singh; Maria Raboaca; Raluca-Andreea Felseghi; Kayhan Ghafoor. Computational Statistics and Machine Learning Techniques for Effective Decision Making on Student’s Employment for Real-Time. Mathematics 2021, 9, 1166 .

AMA Style

Deepak Kumar, Chaman Verma, Pradeep Singh, Maria Raboaca, Raluca-Andreea Felseghi, Kayhan Ghafoor. Computational Statistics and Machine Learning Techniques for Effective Decision Making on Student’s Employment for Real-Time. Mathematics. 2021; 9 (11):1166.

Chicago/Turabian Style

Deepak Kumar; Chaman Verma; Pradeep Singh; Maria Raboaca; Raluca-Andreea Felseghi; Kayhan Ghafoor. 2021. "Computational Statistics and Machine Learning Techniques for Effective Decision Making on Student’s Employment for Real-Time." Mathematics 9, no. 11: 1166.

Journal article
Published: 25 April 2021 in Applied Sciences
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The fidelity of an image subjected to digital processing, such as a contour/texture highlighting process or a noise reduction algorithm, can be evaluated based on two types of criteria: objective and subjective, sometimes the two types of criteria being considered together. Subjective criteria are the best tool for evaluating an image when the image obtained at the end of the processing is interpreted by man. The objective criteria are based on the difference, pixel by pixel, between the original and the reconstructed image and ensure a good approximation of the image quality perceived by a human observer. There is also the possibility that in evaluating the fidelity of a remade (reconstructed) image, the pixel-by-pixel differences will be weighted according to the sensitivity of the human visual system. The problem of improving medical images is particularly important in assisted diagnosis, with the aim of providing physicians with information as useful as possible in diagnosing diseases. Given that this information must be available in real time, we proposed a solution for reconstructing the contours in the images that uses a modified Wiener filter in the wavelet domain and a nonlinear cellular network and that is useful both to improve the contrast of its contours and to eliminate noise. In addition to the need to improve imaging, medical applications also need these applications to run in real time, and this need has been the basis for the design of the method described below, based on the modified Wiener filter and nonlinear cellular networks.

ACS Style

Catalin Dumitrescu; Maria Raboaca; Raluca Felseghi. Methods for Improving Image Quality for Contour and Textures Analysis Using New Wavelet Methods. Applied Sciences 2021, 11, 3895 .

AMA Style

Catalin Dumitrescu, Maria Raboaca, Raluca Felseghi. Methods for Improving Image Quality for Contour and Textures Analysis Using New Wavelet Methods. Applied Sciences. 2021; 11 (9):3895.

Chicago/Turabian Style

Catalin Dumitrescu; Maria Raboaca; Raluca Felseghi. 2021. "Methods for Improving Image Quality for Contour and Textures Analysis Using New Wavelet Methods." Applied Sciences 11, no. 9: 3895.

Chapter
Published: 01 January 2021 in Advances in Computer and Electrical Engineering
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Today, hydrogen is recognized as a non-polluting energy carrier because it does not contribute to global warming if it is produced from renewable energy resources. Hydrogen is the only secondary energy carrier that is suitable for wide application. At the center of attention is the fact that hydrogen can be obtained from a wide range of primary energies. It can be used advantageously for a wide range of applications. Hydrogen can be used in decentralized systems without emitting CO2. Hydrogen is already a part of today's chemical industry, but as an energy resource, its rare benefits can only be achieved through fuel cell technology. The next generations of energy systems for stationary applications based on hydrogen fuel cell have the potential of using and implementing clean energy in the residential buildings sector, as well as in the tertiary and industrial sector, thus having a significant impact on greenhouse gas emissions decreasing, specific characteristics of hydrogen technology having an important role in the decarbonization of energy production systems.

ACS Style

Gheorghe Badea; Raluca-Andreea Felseghi; Ioan Așchilean. Hydrogen-Energy Vector Within a Sustainable Energy System for Stationary Applications. Advances in Computer and Electrical Engineering 2021, 1 -21.

AMA Style

Gheorghe Badea, Raluca-Andreea Felseghi, Ioan Așchilean. Hydrogen-Energy Vector Within a Sustainable Energy System for Stationary Applications. Advances in Computer and Electrical Engineering. 2021; ():1-21.

Chicago/Turabian Style

Gheorghe Badea; Raluca-Andreea Felseghi; Ioan Așchilean. 2021. "Hydrogen-Energy Vector Within a Sustainable Energy System for Stationary Applications." Advances in Computer and Electrical Engineering , no. : 1-21.

Chapter
Published: 01 January 2021 in Advances in Computer and Electrical Engineering
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Science has shown that there are two sustainable alternatives to providing energy needs: renewable energy resources and fuel cells-hydrogen-based energy, which will play a complementary role in securing global energy resources. By promoting the use of hydrogen-based energy technologies, as clean energy technologies for stationary applications, at the level of local communities, industrial and commercial communities, research topics in this field will help the practical development of sustainable and clean energy systems. This chapter provides an overview of fuel cells highlighting aspects related to fuel cell short history, the main components and operating principles of fuel cells, the main constructive fuel cell types, and the main ways of powering stationary applications through the hydrogen fuel cell technologies.

ACS Style

Raluca-Andreea Felseghi; Florin Badea. Hydrogen Fuel Cell Technologies for Sustainable Stationary Applications. Advances in Computer and Electrical Engineering 2021, 166 -185.

AMA Style

Raluca-Andreea Felseghi, Florin Badea. Hydrogen Fuel Cell Technologies for Sustainable Stationary Applications. Advances in Computer and Electrical Engineering. 2021; ():166-185.

Chicago/Turabian Style

Raluca-Andreea Felseghi; Florin Badea. 2021. "Hydrogen Fuel Cell Technologies for Sustainable Stationary Applications." Advances in Computer and Electrical Engineering , no. : 166-185.

Chapter
Published: 01 January 2021 in Research Anthology on Environmental and Societal Well-Being Considerations in Buildings and Architecture
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Currently, buildings are considered to be a continuously evolving organism that over time has to be treated, rehabilitated, and upgraded to meet the requirements set by the user at a certain stage. Buildings are a central element of the EU member states' energy efficiency policies, accounting for about 40% of final energy consumption, and 36% of greenhouse gas emissions, and about 75% of buildings are not energy efficient. Recent applications and studies establish that green retrofitting has maintained older existing buildings to increase energy efficiency, optimize building performance, increase occupants' satisfaction, and boost economic return while decreasing greenhouse gas emissions. In this regard, this chapter aims to address the main factors that negatively affect the performance of residential buildings and presents the common green retrofitting measures that can be taken to ensure the state of human well-being in residential buildings.

ACS Style

Raluca Andreea Felseghi; Teodora Melania Şoimoşan; Constatin Filote; Maria Simona Răboaca. Considerations Regarding the Green Retrofitting of Residential Buildings From Human Wellbeing Perspectives. Research Anthology on Environmental and Societal Well-Being Considerations in Buildings and Architecture 2021, 274 -307.

AMA Style

Raluca Andreea Felseghi, Teodora Melania Şoimoşan, Constatin Filote, Maria Simona Răboaca. Considerations Regarding the Green Retrofitting of Residential Buildings From Human Wellbeing Perspectives. Research Anthology on Environmental and Societal Well-Being Considerations in Buildings and Architecture. 2021; ():274-307.

Chicago/Turabian Style

Raluca Andreea Felseghi; Teodora Melania Şoimoşan; Constatin Filote; Maria Simona Răboaca. 2021. "Considerations Regarding the Green Retrofitting of Residential Buildings From Human Wellbeing Perspectives." Research Anthology on Environmental and Societal Well-Being Considerations in Buildings and Architecture , no. : 274-307.

Journal article
Published: 15 September 2020 in Energies
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In recent years, people have witnessed numerous Internet of Things (IoT)-based attacks with the exponential increase in the number of IoT devices. Alongside this, the means to secure IoT-based applications are maturing slower than our budding dependence on them. Moreover, the vulnerabilities in an IoT system are exploited in chains to penetrate deep into the network and yield more adverse aftereffects. To mitigate these issues, this paper gives unique insights for handling the growing vulnerabilities in common IoT devices and proposes a threat architecture for IoT, addressing threats in the context of a three-layer IoT reference architecture. Furthermore, the vulnerabilities exploited at the several IoT attack surfaces and the challenges they exert are explored. Thereafter, the challenges in quantifying the IoT vulnerabilities with the existing framework are also analyzed. The study also covers a case study on the Intelligent Transportation System, covering road transport and traffic control specifically in terms of threats and vulnerabilities. Another case study on secure energy management in the Smart Grid is also presented. This case study covers the applications of Internet of Vulnerable Things (IoVT) in Smart energy Grid solutions, as there will be tremendous use of IoT in future Smart Grids to save energy and improve overall distribution. The analysis shows that the integration of the proposed architecture in existing applications alarms the developers about the embedded threats in the system.

ACS Style

Pooja Anand; Yashwant Singh; Arvind Selwal; Pradeep Singh; Raluca Felseghi; Maria Raboaca. IoVT: Internet of Vulnerable Things? Threat Architecture, Attack Surfaces, and Vulnerabilities in Internet of Things and Its Applications towards Smart Grids. Energies 2020, 13, 4813 .

AMA Style

Pooja Anand, Yashwant Singh, Arvind Selwal, Pradeep Singh, Raluca Felseghi, Maria Raboaca. IoVT: Internet of Vulnerable Things? Threat Architecture, Attack Surfaces, and Vulnerabilities in Internet of Things and Its Applications towards Smart Grids. Energies. 2020; 13 (18):4813.

Chicago/Turabian Style

Pooja Anand; Yashwant Singh; Arvind Selwal; Pradeep Singh; Raluca Felseghi; Maria Raboaca. 2020. "IoVT: Internet of Vulnerable Things? Threat Architecture, Attack Surfaces, and Vulnerabilities in Internet of Things and Its Applications towards Smart Grids." Energies 13, no. 18: 4813.

Journal article
Published: 19 August 2020 in Sustainability
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The urbanization in Delhi NCR has led to a rapid increase in the vehicle count concerning the rise in population and mobilization. The emissions from the vehicles are currently counted amongst the main sources of air pollution in Delhi. This affects the quality of air. The emission criterion of various pollutants that are emitted from vehicles is evaluated through various International models, which include various vehicles, their modes of pollutants emitted while driving and other factors that are affecting the weather. The approximate emission of pollutants such as Carbon Monoxide (CO) and/or Particulate Matter (PM), from a variety of vehicles and different fuel types, has undergone diurnal variation over the years, depending on the time of the day. This study presents the emission factor of gaseous pollutants Hydrocarbons (HC), Carbon Monoxides (CO) and Carbon Dioxide (CO2) of 181 four-wheeler cars from different companies containing different types of fuels. The measurement of gaseous pollutants is performed for Delhi, the most polluted city in India. The various facts and data were calculated and analyzed with reference to the standard values set by the national schemes of the Pollution and Environment. Based on this statistical data obtained and analyzed, the scenarios regarding future vehicle growth rate and its impact on air quality are mentioned to overcome emission problems. Therefore, it is important to develop and deploy methods for obtaining real-world measurements of vehicle emissions, to estimate the pollutants. The analysis shows that few parameters need to be a concern for reducing the pollutants emission by vehicles. These major parameters are the high survival rates, decrease in annual mileage and major enforcement for three-to-five-year-old vehicles. This study shows that many old vehicles are used in different regions of the country, regardless of many notifications of banning old vehicles by the Government of India. These old vehicles are the major source of vehicle pollutants. The analysis stated that the diesel engine would emit less CO2/km than a petrol engine if having an almost similar engine capacity.

ACS Style

Rohit Sharma; Raghvendra Kumar; Pradeep Kumar Singh; Maria Simona Raboaca; Raluca-Andreea Felseghi. A Systematic Study on the Analysis of the Emission of CO, CO2 and HC for Four-Wheelers and Its Impact on the Sustainable Ecosystem. Sustainability 2020, 12, 6707 .

AMA Style

Rohit Sharma, Raghvendra Kumar, Pradeep Kumar Singh, Maria Simona Raboaca, Raluca-Andreea Felseghi. A Systematic Study on the Analysis of the Emission of CO, CO2 and HC for Four-Wheelers and Its Impact on the Sustainable Ecosystem. Sustainability. 2020; 12 (17):6707.

Chicago/Turabian Style

Rohit Sharma; Raghvendra Kumar; Pradeep Kumar Singh; Maria Simona Raboaca; Raluca-Andreea Felseghi. 2020. "A Systematic Study on the Analysis of the Emission of CO, CO2 and HC for Four-Wheelers and Its Impact on the Sustainable Ecosystem." Sustainability 12, no. 17: 6707.

Research article
Published: 13 July 2020 in International Journal of Energy Research
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The Electric Vehicle (EV) as a clean alternative to Classic Vehicle that use fossil fuels is promoted as an immediate solution to improve the quality parameters of the environment related to the transport sector. The transition to clean electrified mobility must be considered from the sustainability spectrum, and the planning of a strategy related to the implementation of electric vehicles implies, from the beginning, providing clean energy conditions to go toward a green‐to‐green paradigm. It should be noted that the successful implementation of the “green electro mobility” concept depends heavily on the green energy supply solutions of green electric vehicle, so Electric Vehicle Charging Stations (EV‐CS) should be powered by electricity generation systems based on green resources. This research article has as main objective the environmental impact assessment from the perspective of CO2 emissions embedded in green stand‐alone energy systems and the estimation of the environmental benefits of their implementation in the power supply of EV‐CS from the perspective of avoided CO2 emissions compared to the classic electricity supply grid. The results indicate that the green energy systems represent feasible solutions for the independent energy support of electric vehicle charging stations, being able to supply electricity based on on‐site available 100% alternative energy sources. Related to 1 kWh of electricity, the CO2 emissions embedded in these systems represent on average 11.40% of the CO2 emissions of the electricity supplied through the grid at European level and on average 7.10% of the CO2 emissions of the electricity supplied through the grid worldwide. Results also show that the average price of 1kWh of electricity generated by the analyzed systems is 4.3 times higher than the average unit price of the European Union grid energy, but this indicator must be correlated with the kgCO2/kWh cost savings compared to the electricity production from classic power plants.

ACS Style

Constantin Filote; Raluca‐Andreea Felseghi; Maria Simona Raboaca; Ioan Aşchilean. Environmental impact assessment of green energy systems for power supply of electric vehicle charging station. International Journal of Energy Research 2020, 44, 10471 -10494.

AMA Style

Constantin Filote, Raluca‐Andreea Felseghi, Maria Simona Raboaca, Ioan Aşchilean. Environmental impact assessment of green energy systems for power supply of electric vehicle charging station. International Journal of Energy Research. 2020; 44 (13):10471-10494.

Chicago/Turabian Style

Constantin Filote; Raluca‐Andreea Felseghi; Maria Simona Raboaca; Ioan Aşchilean. 2020. "Environmental impact assessment of green energy systems for power supply of electric vehicle charging station." International Journal of Energy Research 44, no. 13: 10471-10494.

Journal article
Published: 31 December 2019 in Energies
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As fuel consumption in the transport sector has increased at a faster pace than in other sectors, the use of electromobility represents the main strategy adopted by the automotive industry. In this context, as the number of electrical vehicles (EVs) will increase, it will also be necessary to increase the number of charging stations. The present paper presents a complete solution for charging stations that can be located in the office or mall parking area. This solution includes a mode 3 AC charging stations of International Electrotechnical Commission (IEC) 61851-1 Standard, an EV simulator for testing the good functionality of the charging stations (i.e., communications, residual-current device (RCD) protection) and a software application used for controlling the charging process by the programmable logic controller (PLC).

ACS Style

Mihai Rata; Gabriela Rata; Constantin Filote; Maria Simona Raboaca; Adrian Graur; Ciprian Afanasov; Andreea-Raluca Felseghi; Rata. The ElectricalVehicle Simulator for Charging Station in Mode 3 of IEC 61851-1 Standard. Energies 2019, 13, 176 .

AMA Style

Mihai Rata, Gabriela Rata, Constantin Filote, Maria Simona Raboaca, Adrian Graur, Ciprian Afanasov, Andreea-Raluca Felseghi, Rata. The ElectricalVehicle Simulator for Charging Station in Mode 3 of IEC 61851-1 Standard. Energies. 2019; 13 (1):176.

Chicago/Turabian Style

Mihai Rata; Gabriela Rata; Constantin Filote; Maria Simona Raboaca; Adrian Graur; Ciprian Afanasov; Andreea-Raluca Felseghi; Rata. 2019. "The ElectricalVehicle Simulator for Charging Station in Mode 3 of IEC 61851-1 Standard." Energies 13, no. 1: 176.

Review
Published: 03 December 2019 in Energies
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The climate changes that are becoming visible today are a challenge for the global research community. The stationary applications sector is one of the most important energy consumers. Harnessing the potential of renewable energy worldwide is currently being considered to find alternatives for obtaining energy by using technologies that offer maximum efficiency and minimum pollution. In this context, new energy generation technologies are needed to both generate low carbon emissions, as well as identifying, planning and implementing the directions for harnessing the potential of renewable energy sources. Hydrogen fuel cell technology represents one of the alternative solutions for future clean energy systems. This article reviews the specific characteristics of hydrogen energy, which recommends it as a clean energy to power stationary applications. The aim of review was to provide an overview of the sustainability elements and the potential of using hydrogen as an alternative energy source for stationary applications, and for identifying the possibilities of increasing the share of hydrogen energy in stationary applications, respectively. As a study method was applied a SWOT analysis, following which a series of strategies that could be adopted in order to increase the degree of use of hydrogen energy as an alternative to the classical energy for stationary applications were recommended. The SWOT analysis conducted in the present study highlights that the implementation of the hydrogen economy depends decisively on the following main factors: legislative framework, energy decision makers, information and interest from the end beneficiaries, potential investors, and existence of specialists in this field.

ACS Style

Raluca-Andreea Felseghi; Elena Carcadea; Maria Simona Raboaca; Cătălin Nicolae Trufin; Constantin Filote. Hydrogen Fuel Cell Technology for the Sustainable Future of Stationary Applications. Energies 2019, 12, 4593 .

AMA Style

Raluca-Andreea Felseghi, Elena Carcadea, Maria Simona Raboaca, Cătălin Nicolae Trufin, Constantin Filote. Hydrogen Fuel Cell Technology for the Sustainable Future of Stationary Applications. Energies. 2019; 12 (23):4593.

Chicago/Turabian Style

Raluca-Andreea Felseghi; Elena Carcadea; Maria Simona Raboaca; Cătălin Nicolae Trufin; Constantin Filote. 2019. "Hydrogen Fuel Cell Technology for the Sustainable Future of Stationary Applications." Energies 12, no. 23: 4593.

Conference paper
Published: 01 October 2019 in 2019 International Conference on ENERGY and ENVIRONMENT (CIEM)
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Decreasing the use of conventional energy resources, increasing efficiency of stationary applications, reducing greenhouse emissions are topics of great interest worldwide. Hybrid energy is the combined use of two or more forms of energy, ensuring in a more efficient overall result. In general, hybrid energy systems can significantly reduce classic energy consumption, impact on the environment and cost of supply to end users. This article addresses two innovative concepts that underpin the sustainability elements in stationary applications: energy efficient building and hybrid energy generation system with the role of completely eliminating traditional energy consumption. The case study presents a solution for integrating renewable energy sources (sun and wind) with a special role in decarbonising of buildings sector. The study, the simulations and analyzes performed aim to demonstrate the applicability of hybrid energy systems and highlighting their energy, ecological and economic performances in supplying with alternative hybrid energies for stationary applications.

ACS Style

Maria Simona Raboaca; Raluca - Andreea Felseghi. Energy Efficient Stationary Application Supplied with Solar - Wind Hybrid Energy. 2019 International Conference on ENERGY and ENVIRONMENT (CIEM) 2019, 495 -499.

AMA Style

Maria Simona Raboaca, Raluca - Andreea Felseghi. Energy Efficient Stationary Application Supplied with Solar - Wind Hybrid Energy. 2019 International Conference on ENERGY and ENVIRONMENT (CIEM). 2019; ():495-499.

Chicago/Turabian Style

Maria Simona Raboaca; Raluca - Andreea Felseghi. 2019. "Energy Efficient Stationary Application Supplied with Solar - Wind Hybrid Energy." 2019 International Conference on ENERGY and ENVIRONMENT (CIEM) , no. : 495-499.

Conference paper
Published: 13 August 2019 in E3S Web of Conferences
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This contribution presents a comparative study of operating a green energy hybrid system to sustain the power production mix of an office building. For this purpose, two scenarios of a hydrogen storage system (S1) and battery energy storage (S2) to sustain solar and wind energy inlets were compared from a technical, environmental and financial perspectives. S1 - hydrogen technology system was found to be more performing than S2 - battery technology in terms of energy efficiency, as well as CO2 emissions and initial costs.

ACS Style

Constantin Filote; Raluca - Andreea Felseghi; Filip Cârlea; Mihai Raţă; Claudia Steluţa Martiş; Alexandru Lavric; Daniel Fodorean; Maria Simona Răboacă. Green Hybrid Energy for Office Building. E3S Web of Conferences 2019, 111, 1 .

AMA Style

Constantin Filote, Raluca - Andreea Felseghi, Filip Cârlea, Mihai Raţă, Claudia Steluţa Martiş, Alexandru Lavric, Daniel Fodorean, Maria Simona Răboacă. Green Hybrid Energy for Office Building. E3S Web of Conferences. 2019; 111 ():1.

Chicago/Turabian Style

Constantin Filote; Raluca - Andreea Felseghi; Filip Cârlea; Mihai Raţă; Claudia Steluţa Martiş; Alexandru Lavric; Daniel Fodorean; Maria Simona Răboacă. 2019. "Green Hybrid Energy for Office Building." E3S Web of Conferences 111, no. : 1.

Journal article
Published: 23 April 2019 in Procedia Manufacturing
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Harnessing of the renewable energy sources potential within the systems that produce heat and domestic hot water represents an important current objective in the energetic field. The thermo-energy optimization of the existing heating systems by efficiently integrating technologies that harness renewable energy sources involves, in most instances, the change of the temperatures regime for which the systems were initially designed. In the present paper, the impact of the operating systemic temperature variations on the performance indicators of an existing heat exchanger of the district heating system’s thermal station was analysed, as well as the quantification of the impact on its energy efficiency.

ACS Style

Gheorghe Badea; Teodora - Melania Șoimoșan; Raluca - Andreea Felseghi. Influence of the Systemic Operating Temperatures on the Energy Efficiency of the Existing Heat Exchangers. Procedia Manufacturing 2019, 32, 480 -487.

AMA Style

Gheorghe Badea, Teodora - Melania Șoimoșan, Raluca - Andreea Felseghi. Influence of the Systemic Operating Temperatures on the Energy Efficiency of the Existing Heat Exchangers. Procedia Manufacturing. 2019; 32 ():480-487.

Chicago/Turabian Style

Gheorghe Badea; Teodora - Melania Șoimoșan; Raluca - Andreea Felseghi. 2019. "Influence of the Systemic Operating Temperatures on the Energy Efficiency of the Existing Heat Exchangers." Procedia Manufacturing 32, no. : 480-487.

Review
Published: 18 March 2019 in Energies
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Nowadays, the evolution of solar energy use has turned into a profound issue because of the implications of many points of view, such as technical, social, economic and environmental that impose major constraints for policy-makers in optimizing solar energy alternatives. The topographical constraints regarding the availability of inexhaustible solar energy is driving field development and highlights the need for increasingly more complex solar power systems. The solar energy is an inexhaustible source of CO2 emission-free energy at a global level. Solar thermal technologies may produce electric power when they are associated with thermal energy storage, and this may be used as a disposable source of limitless energy. Furthermore, it can also be used in industrial processes. Using these high-tech systems in a large area of practice emboldens progress at the performance level. This work compiles the latest literature in order to provide a timely review of the evolution and worldwide implementation of Concentrated Solar Power—CSP—mechanization. The objective of this analysis is to provide thematic documentation as a basis for approaching the concept of a polygeneration solar system and the implementation possibilities. It also aims to highlight the role of the CSP in the current and future world energy system.

ACS Style

Maria Simona Răboacă; Gheorghe Badea; Adrian Enache; Constantin Filote; Gabriel Răsoi; Mihai Rata; Alexandru Lavric; Raluca-Andreea Felseghi. Concentrating Solar Power Technologies. Energies 2019, 12, 1048 .

AMA Style

Maria Simona Răboacă, Gheorghe Badea, Adrian Enache, Constantin Filote, Gabriel Răsoi, Mihai Rata, Alexandru Lavric, Raluca-Andreea Felseghi. Concentrating Solar Power Technologies. Energies. 2019; 12 (6):1048.

Chicago/Turabian Style

Maria Simona Răboacă; Gheorghe Badea; Adrian Enache; Constantin Filote; Gabriel Răsoi; Mihai Rata; Alexandru Lavric; Raluca-Andreea Felseghi. 2019. "Concentrating Solar Power Technologies." Energies 12, no. 6: 1048.