Open Access Preface 00001 Totyo Totev, Ilinca Nastase and August Hubert Wierling Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132700001 AbstractPDF (1.571 MB)NASA ADS Abstract Service
Open Access Comparative analysis between methane and hydrogen regarding ignition and combustion in diffusive mode 01001 Lucian Mihăescu, Dorin Stanciu, Gheorghe Lăzăroiu, Ionel Pîșă and Gabriel Negreanu Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701001 AbstractPDF (998.4 KB)ReferencesNASA ADS Abstract Service
Open Access Energy and economic analysis of an ORC combined to steam boiler 01002 Gabriel Mocanu, Ion V. Ion and Cristian Iosifescu Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701002 AbstractPDF (931.5 KB)ReferencesNASA ADS Abstract Service
Open Access Mathematical Models of the Energy Characteristics of a Backpressure Steam Turbine Based on a Simulation Study 01003 Kaloyan Hristov and Ivan Genovski Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701003 AbstractPDF (936.9 KB)ReferencesNASA ADS Abstract Service
Open Access Comparative technical and economic analysis of innovative methods for waste heat recovery from flue gases for boiler type BKZ 220-100 01004 Hristo Beloev, Iliya Iliev, Angel Terziev, Andrey Kibarin and Madina Aliyarova Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701004 AbstractPDF (2.338 MB)ReferencesNASA ADS Abstract Service
Open Access Moisture transfer in outer walls with layers of different density 01005 Andrey Rymarov, Dmitriy Titkov and Aleksey Ananiev Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701005 AbstractPDF (1.604 MB)ReferencesNASA ADS Abstract Service
Open Access An experimental study for drying Pisum sativum on an electric dryer and a heat pump dryer 01006 Thanh Nhan Phan, Van Hung Tran, Nikola Kaloyanov and Merima Zlateva Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701006 AbstractPDF (2.446 MB)ReferencesNASA ADS Abstract Service
Open Access Modelling and numerical simulation of fire in a coffee storage hall 01007 Kalin Krumov, Nina Penkova, Boian Mladenov and Yordan Stoyanov Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701007 AbstractPDF (3.050 MB)ReferencesNASA ADS Abstract Service
Open Access Verification and validation of a CFD model of a fixed regenerator for heat recovery from air 01008 Angel Penev, Lyubomir Tsokov and Momchil Vassilev Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701008 AbstractPDF (2.238 MB)ReferencesNASA ADS Abstract Service
Open Access Air-to-water heat pump assessment: Part 1 – Experimental setup 01009 Nadezhda Doseva, Daniela Chakyrova, Svetoslav Stoianov and Ilia Hadhidimov Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701009 AbstractPDF (2.298 MB)ReferencesNASA ADS Abstract Service
Open Access Air-to-water heat pump assessment: Part 2 – Exergetic and exergoeconomic analyses 01010 Nadezhda Doseva and Daniela Chakyrova Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701010 AbstractPDF (2.455 MB)ReferencesNASA ADS Abstract Service
Open Access Modelling and numerical simulation of the transport phenomena in water thermal energy storage tanks 01011 Nikola Kaloyanov, Rosen Tsecov and Nina Penkova Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701011 AbstractPDF (3.836 MB)ReferencesNASA ADS Abstract Service
Open Access An approach for reducing the air conditioning costs in office buildings in Vietnam 01012 Van Hung Tran, Thanh Nhan Phan and Momchil Vassilev Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701012 AbstractPDF (2.587 MB)ReferencesNASA ADS Abstract Service
Open Access Thermal-hydraulic analysis of a VVER-1000 core in MSLB conditions 01013 Svetlomir Mitkov, Ivan Spasov and Nikola Kolev Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701013 AbstractPDF (2.363 MB)ReferencesNASA ADS Abstract Service
Open Access Thermodynamic and kinetic parameters of biomass from black pine (PINUS NIGRA ARN.) 01014 Stanislava Tasheva, Milen Dimov, Hafize Fidan, Stanko Stankov, Lazar Lazarov, Bozidar Bozadzhiev, Apostol Simitchiev and Albena Stoyanova Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701014 AbstractPDF (180.6 KB)ReferencesNASA ADS Abstract Service
Open Access Investigating the kinetics at low temperature heat pump drying and conventional drying of osmotic dehydrated blueberries 01015 Hristov Hristo, Aleksandrov Svetoslav, Petrova Todorka, Ruskova Milena, Gotcheva Velitchka and Nikolay Penov Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132701015 AbstractPDF (1.816 MB)ReferencesNASA ADS Abstract Service
Open Access Optimization of the distance between the rows in solar collectors’ arrays 02001 Merima Zlateva Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132702001 AbstractPDF (229.4 KB)ReferencesNASA ADS Abstract Service
Open Access Simulation Investigation of the Wind Load of Photovoltaic Panels 02002 Ivaylo Stoyanov, Teodor Iliev and Grigor Mihaylov Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132702002 AbstractPDF (2.643 MB)ReferencesNASA ADS Abstract Service
Open Access Assessing the diversification of energy mix with the methods of entropy and hierarchy of information 02003 Iliyan Petrov Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132702003 AbstractPDF (868.7 KB)ReferencesNASA ADS Abstract Service
Open Access Renewable energies projects selection: block criteria systematization with AHP and Entropy-MOORA methods in MCDM 02004 Iliyan Petrov Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132702004 AbstractPDF (168.5 KB)ReferencesNASA ADS Abstract Service
Open Access Influence evaluation of the ship propulsion system on the energy efficiency for small, medium and large container vessels 02005 Viktor Nikiforov and Irina Kostova Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132702005 AbstractPDF (1.562 MB)ReferencesNASA ADS Abstract Service
Open Access Impact study of the fuel type used on the energy efficiency costs values and harmful emissions generation for small, medium and large container vessels 02006 Viktor Nikiforov and Irina Kostova Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132702006 AbstractPDF (933.5 KB)ReferencesNASA ADS Abstract Service
Open Access A design of solar battery cleaning system by modularity method 02007 L.K. Dien and Svetlin Antonov Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132702007 AbstractPDF (1.742 MB)ReferencesNASA ADS Abstract Service
Open Access Electronic measuring system design for photovoltaic panels analysis 02008 Krastin Yordanov, Iliya Hadzhidimov and Penka Zlateva Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132702008 AbstractPDF (4.532 MB)ReferencesNASA ADS Abstract Service
Open Access Determination of the optimal air-fuel ratio for upgraded biogas engine operation 02009 Radostin Dimitrov and Penka Zlateva Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132702009 AbstractPDF (1.881 MB)ReferencesNASA ADS Abstract Service
Open Access Possibilities for obtaining pellets by single-screw extrusion of biomass from black pine (Pinus nigra Arn.) 02010 Apostol Simitchiev, Bozidar Bozadzhiev, Lazar Lazarov, Stanko Stankov, Hafize Fidan and Albena Stoyanova Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132702010 AbstractPDF (2.069 MB)ReferencesNASA ADS Abstract Service
Open Access On the Development of a Real Time Water Monitoring System 02011 Sandel Zaharia, Gabriel Iana, Cristian Monea and Mihnea Sandu Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132702011 AbstractPDF (1.657 MB)ReferencesNASA ADS Abstract Service
Open Access Design and constructive – technological development for children’s art clothing 03001 Radka Atanasova, Magdalena Pavlova and Monika Merkova Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132703001 AbstractPDF (4.287 MB)ReferencesNASA ADS Abstract Service
Open Access Development of boutique denim clothing by the "upcycling" method 03002 Magdalena Pavlova Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132703002 AbstractPDF (4.165 MB)ReferencesNASA ADS Abstract Service
Open Access Methods for personal cooling in hot environment used in clothing and wearables 03003 Atanas Vasilev, Radostina A. Angelova and Rositsa Velichkova Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132703003 AbstractPDF (2.067 MB)ReferencesNASA ADS Abstract Service
Open Access Modification of Leather Surface Using Low-Pressure Plasma and Antimicrobial Reagent 03004 Sanja Ercegović Ražić, Jadranka Akalović, Tomislav Ivanković, Anja Ludaš and Katarina Ištef Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132703004 AbstractPDF (4.560 MB)ReferencesNASA ADS Abstract Service
Open Access Tangram based technology for clothing design 03005 Boryana Georgieva-Gushtanova Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132703005 AbstractPDF (2.454 MB)ReferencesNASA ADS Abstract Service
Open Access Application of ICT in the Online Education of Apparel Design and Production within the framework of ICT-TEX project 03006 Hassan Saeed, Yordan Kyosev, Radka Atanasova, Angel Terziev and Carla Hertleer Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132703006 AbstractPDF (1.772 MB)ReferencesNASA ADS Abstract Service
Open Access GA-tuning of Multivariable PID Controller for Electrohydraulic Load-Sensing Servo System 04001 Alexander Mitov, Tsonyo Slavov, Jordan Kralev and Ilcho Angelov Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132704001 AbstractPDF (2.070 MB)ReferencesNASA ADS Abstract Service
Open Access Design of direct acting differential pressure control valve test bench 04002 Ognyan Bekriev and Radoslav Asenov Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132704002 AbstractPDF (1.866 MB)ReferencesNASA ADS Abstract Service
Open Access Reduction of the Battery Capacity of Hybrid Electric Vehicle with the Help of Electrically Assisted Turbocharger 04003 Milen Mihaylov, Ivaylo Stoyanov and Teodor Iliev Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132704003 AbstractPDF (2.156 MB)ReferencesNASA ADS Abstract Service
Open Access Experimental study of the accuracy of measuring of a central water meter 04004 Ognyan Bekriev and Aleksandar Stanilov Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132704004 AbstractPDF (426.6 KB)ReferencesNASA ADS Abstract Service
Open Access Investigations of a vertical axis wind turbine with frontal cylindrical guide vane unit 04005 Valentin Obretenov and Rossen Iliev Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132704005 AbstractPDF (3.512 MB)ReferencesNASA ADS Abstract Service
Open Access Modelling indoor pollutant distribution via passive scalar and virtual box approach 05001 George Pitchurov, Detelin Markov, Iskra Simova, Rositsa Velichkova, Peter Stankov and Radostina Angelova Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132705001 AbstractPDF (1.153 MB)ReferencesNASA ADS Abstract Service
Open Access Parameters influencing the droplet formation in a focusing microfluidic channel 05002 Emil Grigorov, Jordan A. Denev, Boris Kirov and Vassil Galabov Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132705002 AbstractPDF (1.407 MB)ReferencesNASA ADS Abstract Service
Open Access The influence of the structure of laminar flows on the characteristics of equipment 05003 Vasyl Arsirii, Oleg Kravchenko, Bohdan Savchuk and Olena Arsirii Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132705003 AbstractPDF (587.2 KB)ReferencesNASA ADS Abstract Service
Open Access Modularity design of the bamboo plastic fiber forming machine 05004 Nguyen Thanh Nam and Nguyen Hoang Hiep Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132705004 AbstractPDF (3.237 MB)ReferencesNASA ADS Abstract Service
Open Access A Research on The Formability of PVC Sheet in Single Point Incremental Forming (SPIF) Technology 05005 Nguyen Thanh Nam, Nguyen Hoang Hiep, Nguyen Tan Hung, Tran Trong Hy and Ho Huu Han Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132705005 AbstractPDF (2.378 MB)ReferencesNASA ADS Abstract Service
Open Access Modularity design of instant coffee powder packaging machine 05006 Svetlin Antonov and L.K. Dien Published online: 22 November 2021 DOI: https://doi.org/10.1051/e3sconf/202132705006 AbstractPDF (2.098 MB)ReferencesNASA ADS Abstract Service