E3S Web of Conferences

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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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Tangram based technology for clothing design 03005

Boryana Georgieva-Gushtanova

Published online: 22 November 2021

DOI: https://doi.org/10.1051/e3sconf/202132703005

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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