Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831306
Roumen Gadjev
The researching and examinations of the irrigation processes, as well the processes causing erosion of the soil furrow beds and the alteration of their state in practice is done based on the flow velocities averaged-out in time. Through the hydraulic researches, it is known however that the real, actual velocities are pulsation velocities into the cross section of the water flow, which are irregularly variable in time and different from the averaged flow velocities. In view of this, in the present work the relations were realized on the basis of the pulsation velocities of the water flows. On this basis, a water erosion approach and method is offered for prediction of the erosive state and stability of the furrows for irrigation.
{"title":"Water Erosion Hydrodinamical Impact on the Soil at Iirigation Processes","authors":"Roumen Gadjev","doi":"10.1109/eeae53789.2022.9831306","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831306","url":null,"abstract":"The researching and examinations of the irrigation processes, as well the processes causing erosion of the soil furrow beds and the alteration of their state in practice is done based on the flow velocities averaged-out in time. Through the hydraulic researches, it is known however that the real, actual velocities are pulsation velocities into the cross section of the water flow, which are irregularly variable in time and different from the averaged flow velocities. In view of this, in the present work the relations were realized on the basis of the pulsation velocities of the water flows. On this basis, a water erosion approach and method is offered for prediction of the erosive state and stability of the furrows for irrigation.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116132612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831323
B. Evstatiev, N. Evstatieva, N. Codreanu
In this study is developed an algorithm for operation of an electronic system for monitoring and control of electric submersible pumps. It ensures fault-free operation by controlling the pump and power characteristics in several situations – before the pump is started, during the pump start up and during normal operation. The specifics of connecting and disconnecting submersible pumps to/from a water supply installation are also analyzed and a number of measures for ensuring accident-free exploitation are suggested. A structure of the electronic system is also developed and presented using a block diagram.
{"title":"Electronic System for Control of a Submersible Water Pump","authors":"B. Evstatiev, N. Evstatieva, N. Codreanu","doi":"10.1109/eeae53789.2022.9831323","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831323","url":null,"abstract":"In this study is developed an algorithm for operation of an electronic system for monitoring and control of electric submersible pumps. It ensures fault-free operation by controlling the pump and power characteristics in several situations – before the pump is started, during the pump start up and during normal operation. The specifics of connecting and disconnecting submersible pumps to/from a water supply installation are also analyzed and a number of measures for ensuring accident-free exploitation are suggested. A structure of the electronic system is also developed and presented using a block diagram.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123151489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831328
P. Osadchuk, D. P. Domuschi, Y. Enakiev, B. Elenov
An experimental setup with ultrasonic generator for purification of sunflower oil under the influence of ultrasonic field has been developed. The options for using the ultrasonic field for primary cleaning of sunflower oil are considered. Experimental studies of the effect of ultrasonic cavitation by changing the frequency and power of the electrical signal supplied to a magnetostrictive transmitter are presented. The technological parameters of the process of purification of sunflower oil by ultrasonic treatment have been determined.
{"title":"Cleaning Sunflower Oil with the Use of the Ultrasonic Field","authors":"P. Osadchuk, D. P. Domuschi, Y. Enakiev, B. Elenov","doi":"10.1109/eeae53789.2022.9831328","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831328","url":null,"abstract":"An experimental setup with ultrasonic generator for purification of sunflower oil under the influence of ultrasonic field has been developed. The options for using the ultrasonic field for primary cleaning of sunflower oil are considered. Experimental studies of the effect of ultrasonic cavitation by changing the frequency and power of the electrical signal supplied to a magnetostrictive transmitter are presented. The technological parameters of the process of purification of sunflower oil by ultrasonic treatment have been determined.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"22 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120974856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831205
E. Nazmieva, Guzel Chumarina, L. Ilikova, Y. Valeeva
The Internet and the World Wide Web (www) have fundamentally changed the practice of distance teaching and distance learning which has evolved over the past years. Today, online learning begins to really replace the full-time form of acquiring knowledge. Russian universities are actively introducing online courses designed to replace classes within the walls of educational institutions. Thousands of educational institutions have already adapted various forms of online education for their needs. Review and consideration of the sources and trends of modern online learning is an important step towards it.The authors base their research on the analysis and synthesis of Russian and international experience evolving main characteristics of modality types of e-learning, online-learning and distance learning. ICTs have the potential to facilitate collaboration, exchange and access to learning resources. MOOCs concept can be applied in the system of higher full-time and part-time education through the mechanisms of creating mixed forms that combine a face-to-face approach (usually in the form of tutoring), online lectures and practical classes.
{"title":"Online Education: Modern Management in University systemy","authors":"E. Nazmieva, Guzel Chumarina, L. Ilikova, Y. Valeeva","doi":"10.1109/eeae53789.2022.9831205","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831205","url":null,"abstract":"The Internet and the World Wide Web (www) have fundamentally changed the practice of distance teaching and distance learning which has evolved over the past years. Today, online learning begins to really replace the full-time form of acquiring knowledge. Russian universities are actively introducing online courses designed to replace classes within the walls of educational institutions. Thousands of educational institutions have already adapted various forms of online education for their needs. Review and consideration of the sources and trends of modern online learning is an important step towards it.The authors base their research on the analysis and synthesis of Russian and international experience evolving main characteristics of modality types of e-learning, online-learning and distance learning. ICTs have the potential to facilitate collaboration, exchange and access to learning resources. MOOCs concept can be applied in the system of higher full-time and part-time education through the mechanisms of creating mixed forms that combine a face-to-face approach (usually in the form of tutoring), online lectures and practical classes.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122533736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831231
S. Stankov, H. Fidan, A. Lazarov, V. Gandova, A. Stoyanova, Ivaila Dincheva
The chemical composition of summer savory (Satureja hortensis L.) essential oil was determined by GC/MS analysis. The main components of summer savory essential oil were represented by carvacrol (63.71%), γ-terpinene (20.47%), and p-cymene (5.08%). The main groups of compounds were represented mainly by aromatic oxygen derivatives (65.16%), and on the other hand, the participation of sesquiterpene oxygen derivatives (0.31%) was the lowest. The most significant antibacterial activity was determined against Gram-negative bacteria Proteus vulgaris (35.0 mm) and Escherichia coli (20.0 mm), and the Gram-positive Bacillus subtilis with zone of inhibition - 29.0 mm.
{"title":"Evaluation of the chemical composition and antimicrobial activity of summer savory (Satureja hortensis L.) essential oil","authors":"S. Stankov, H. Fidan, A. Lazarov, V. Gandova, A. Stoyanova, Ivaila Dincheva","doi":"10.1109/eeae53789.2022.9831231","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831231","url":null,"abstract":"The chemical composition of summer savory (Satureja hortensis L.) essential oil was determined by GC/MS analysis. The main components of summer savory essential oil were represented by carvacrol (63.71%), γ-terpinene (20.47%), and p-cymene (5.08%). The main groups of compounds were represented mainly by aromatic oxygen derivatives (65.16%), and on the other hand, the participation of sesquiterpene oxygen derivatives (0.31%) was the lowest. The most significant antibacterial activity was determined against Gram-negative bacteria Proteus vulgaris (35.0 mm) and Escherichia coli (20.0 mm), and the Gram-positive Bacillus subtilis with zone of inhibition - 29.0 mm.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122895934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831299
I. Prodanov, M. Ilieva-Obretenova
The study uses saved energy (the expected annual economy of electrical energy) to describe the impact of energy conservation measures (ECM) on reducing CO2 emissions. Measure 1 (M1) is Reconstruction of the electric drive and control of a basic hoisting machine. Measure 2 (M2) is Reconstruction of the electric drive and control of a fan. A technological analysis for determining losses in percent without implementation of M1 and M2 was made. An investment analysis to determine energy savings in percent and in kWh/y with implementation of M1 and M2 was performed. The value in kWh/y is adjusted with a coefficient of emission factor (CO2) for electrical energy. Further research will involve an analysis of other energy conservation measures and their impact on the reduction of harmful emissions. In the long term and on a larger scale the improvement of the energy balance of technological systems will be favorable for slowing down climatic changes.
{"title":"Impact of Two Energy Conservation Measures on Reducing CO2 Emissions","authors":"I. Prodanov, M. Ilieva-Obretenova","doi":"10.1109/eeae53789.2022.9831299","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831299","url":null,"abstract":"The study uses saved energy (the expected annual economy of electrical energy) to describe the impact of energy conservation measures (ECM) on reducing CO2 emissions. Measure 1 (M1) is Reconstruction of the electric drive and control of a basic hoisting machine. Measure 2 (M2) is Reconstruction of the electric drive and control of a fan. A technological analysis for determining losses in percent without implementation of M1 and M2 was made. An investment analysis to determine energy savings in percent and in kWh/y with implementation of M1 and M2 was performed. The value in kWh/y is adjusted with a coefficient of emission factor (CO2) for electrical energy. Further research will involve an analysis of other energy conservation measures and their impact on the reduction of harmful emissions. In the long term and on a larger scale the improvement of the energy balance of technological systems will be favorable for slowing down climatic changes.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125808081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831426
Yulian Moskov
Despite the good design solutions in the last generations of marine diesel engines, there is a complex problem of ecological and operational nature. Further development of the optimal dependence between consumption, reliability and motor resource contradicts the requirements for environmental protection. There is an urgent need to improve the fuel supply, blending and combustion systems. This is impossible without deepening in the processes of modeling and implementation of workable mathematical models applicable in the IT industry for the purposes of management, technical operation and automation.
{"title":"Determining the integral law of fuel supply and heat dissipation characteristics of low speed marine diesel engines","authors":"Yulian Moskov","doi":"10.1109/eeae53789.2022.9831426","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831426","url":null,"abstract":"Despite the good design solutions in the last generations of marine diesel engines, there is a complex problem of ecological and operational nature. Further development of the optimal dependence between consumption, reliability and motor resource contradicts the requirements for environmental protection. There is an urgent need to improve the fuel supply, blending and combustion systems. This is impossible without deepening in the processes of modeling and implementation of workable mathematical models applicable in the IT industry for the purposes of management, technical operation and automation.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131100907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831416
A. Dostiyarov, H. Beloev, Maxat Anuarbekov, I. Iliev
This article presents the results of numerical simulation of a novel biogas burner. The burner uses biogas with the composition 60% - СН4 и 40% - СО2. The basics for modeling are given, as well as the results of modeling. Analysis of the results shows that with an increase in excess air, there is a possibility of reducing the concentration of nitrogen oxides by 58% from the base value at excess air ratio α=1. The conducted numerical study showed that the use of preliminary fuel preparation is one of the most effective ways to reduce the concentration of nitrogen oxides. Pre-mixing reduces local "rich" fuel concentrations in the combustion zone, which reduces the formation of high-temperature zones in these areas. As is known, the formation of nitrogen oxides primarily depends on temperature; therefore, the decrease in local high temperatures reduces the concentration of NOx.
{"title":"Numerical modelling biogas combustion in the novel burner","authors":"A. Dostiyarov, H. Beloev, Maxat Anuarbekov, I. Iliev","doi":"10.1109/eeae53789.2022.9831416","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831416","url":null,"abstract":"This article presents the results of numerical simulation of a novel biogas burner. The burner uses biogas with the composition 60% - СН4 и 40% - СО2. The basics for modeling are given, as well as the results of modeling. Analysis of the results shows that with an increase in excess air, there is a possibility of reducing the concentration of nitrogen oxides by 58% from the base value at excess air ratio α=1. The conducted numerical study showed that the use of preliminary fuel preparation is one of the most effective ways to reduce the concentration of nitrogen oxides. Pre-mixing reduces local \"rich\" fuel concentrations in the combustion zone, which reduces the formation of high-temperature zones in these areas. As is known, the formation of nitrogen oxides primarily depends on temperature; therefore, the decrease in local high temperatures reduces the concentration of NOx.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131117658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831300
T. Hristova
According to the criteria for sustainable development, there are mechanisms for the implementation of the measures of the circular economy for recycling and reusing used materials in new products such as plastics, leather, glass, paper, and others. In order to achieve efficiency and the ability to analyze the processes of recycling and reuse, it is necessary to monitor the material flows in the chain user-processor-producer-user. According to European laws and strategies, this process must be based on digital technologies. The subject of this article is an analysis of the possibility of applying a blockchain at the entrance of a waste processing plant. For this purpose, the main problems in waste processing are first considered, the construction of a digitalized separation plant is proposed, and based on them a conceptual model for communication among the participants is suggested - citizens, waste collection companies, separation plant, recycling plant.
{"title":"The place of the blockchain in the recycling of raw materials","authors":"T. Hristova","doi":"10.1109/eeae53789.2022.9831300","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831300","url":null,"abstract":"According to the criteria for sustainable development, there are mechanisms for the implementation of the measures of the circular economy for recycling and reusing used materials in new products such as plastics, leather, glass, paper, and others. In order to achieve efficiency and the ability to analyze the processes of recycling and reuse, it is necessary to monitor the material flows in the chain user-processor-producer-user. According to European laws and strategies, this process must be based on digital technologies. The subject of this article is an analysis of the possibility of applying a blockchain at the entrance of a waste processing plant. For this purpose, the main problems in waste processing are first considered, the construction of a digitalized separation plant is proposed, and based on them a conceptual model for communication among the participants is suggested - citizens, waste collection companies, separation plant, recycling plant.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128115759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831421
V. Gandova, N. Petkova, Darina D. Georgieva, A. Stoyanova, Y. Koleva
Different investigations at Clary sage (Salvia sclarea L.) essential oil were presented. Antioxidant properties of the oil were evaluated by four different methods – DPPH, ABTS, FRAP, and CUPRAC. The oxidative stability of clary sage essential oil was provided at two temperatures 6 and 25°C. Using the Arrhenius equation the rate constant of the oxidative process was determined. Activating parameters as activation energy (Ea), enthalpy of activation (ΔH++), the entropy of activation (ΔS++), and Gibbs free energy of activation (ΔG++) were calculated.
{"title":"Salvia sclarea essential oil: Antioxidant capasity, kinetic and thermodynamic investigation","authors":"V. Gandova, N. Petkova, Darina D. Georgieva, A. Stoyanova, Y. Koleva","doi":"10.1109/eeae53789.2022.9831421","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831421","url":null,"abstract":"Different investigations at Clary sage (Salvia sclarea L.) essential oil were presented. Antioxidant properties of the oil were evaluated by four different methods – DPPH, ABTS, FRAP, and CUPRAC. The oxidative stability of clary sage essential oil was provided at two temperatures 6 and 25°C. Using the Arrhenius equation the rate constant of the oxidative process was determined. Activating parameters as activation energy (Ea), enthalpy of activation (ΔH++), the entropy of activation (ΔS++), and Gibbs free energy of activation (ΔG++) were calculated.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126931690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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