E3S Web of Conferences

Open Access

Preface 00001

Teodor Iliev, Ivaylo Stoyanov, Grigor Mihaylov and Selahattin Kosunalp

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672700001

• Abstract
• PDF (1.119 MB)

Open Access

A study on particle time-step and particle residence time discrepancies in 3D numerical hydrocyclone modeling 01001

Orçun Ekin

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672701001

• Abstract
• PDF (4.885 MB)
• References

Open Access

Thermal analysis and combustion behavior of polyester nonwoven insulation materials for energy-efficient applications 01002

Penka Zlateva and Rositsa Petkova-Slipets

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672701002

• Abstract
• PDF (1.992 MB)
• References

Open Access

Energy and airflow optimization in an industrial roasting system: A case study 01003

Ivan Dimchev

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672701003

• Abstract
• PDF (2.480 MB)
• References

Open Access

Analysis of the electromagnetic impact of traction networks featuring reactive power compensation on pipelines 01004

Iliya Iliev, Andrey Kryukov, Konstantin Suslov, Aleksandr Cherepanov, Aleksandr Kryukov, Ivan Beloev, Hristo Beloev and Yuliya Valeeva

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672701004

• Abstract
• PDF (2.914 MB)
• References

Open Access

CFD-based optimization of a modified split-type reaction water turbine using response surface methodology 01005

Murshied Aloyod and Jaime Honra

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672701005

• Abstract
• PDF (3.754 MB)
• References

Open Access

Assessment of the energy potential of unused biomass in Bulgaria with emphasis on the Northeastern region 01006

Nevena Mileva and Penka Zlateva

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672701006

• Abstract
• PDF (1.489 MB)
• References

Open Access

A generalized machine learning approach for multi-site solar power forecasting using histogram-based gradient boosting 02001

Tsvetelina Stefanova and Slavi Georgiev

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702001

• Abstract
• PDF (2.070 MB)
• References

Open Access

Heat pump system for the utilization of renewable energy sources 02002

Saule Demessova, Yerkin Yerzhigitov, Nurgul Moldybayeva, Makhabbat Kutanova and Aigul Taldybayev

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702002

• Abstract
• PDF (1.865 MB)
• References

Open Access

Energy-as-a-service in Bulgaria: A techno-economic model of industrial PV + BESS contracts under the Post-RED III framework 02003

Vladimir Zinoviev

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702003

• Abstract
• PDF (1.926 MB)
• References

Open Access

Integrating chemical and physical factors into delta vulnerability assessment: The role of erosion and diffuse pollution in the Shkumbin River Delta 02004

Monika Hoxhaj, Entela Dushku and Fation Dedaj

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702004

• Abstract
• PDF (1.759 MB)
• References

Open Access

Development of aggregators in micro grids in Eastern Europe 02005

Metodi Dimitrov

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702005

• Abstract
• PDF (1.863 MB)
• References

Open Access

Multi-criteria comparison of H₂ transport alternatives via MEREC-CoCoSo: An ammonia-focused analysis 02006

Ayşe Nuray Canat

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702006

• Abstract
• PDF (1.579 MB)
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Open Access

From a single waste source to secondary diffuse pollution: Heavy metal contamination of sequential floodplains triggered by coal waste stockpiling 02007

Monika Hoxhaj

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702007

• Abstract
• PDF (2.403 MB)
• References

Open Access

Data analysis of treated wastewater impacts on coastal water parameters 02008

Dimitrios Kazolis, Ioanna Petrakopoulo and Theodosia Kazoli

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702008

• Abstract
• PDF (2.272 MB)
• References

Open Access

A multi-stage framework for classifying complex coastal environments using Sentinel-2 data and the DEVWE method 02009

Nikolay Dimitrov and Valentina Markova

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702009

• Abstract
• PDF (3.101 MB)
• References

Open Access

Environmental impacts of photovoltaic module recycling: Technologies, carbon footprint and sustainability aspects 02010

Radka Atanasova and Ivan Dimchev

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702010

• Abstract
• PDF (1.517 MB)
• References

Open Access

Study of the performance of the backside of bifacial photovoltaic panels for two similar snowy winter days with different levels of illumination 02011

Ventsislav Keseev, Boris Evstatiev, Nicolay Mihailov and Nikolay Valov

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702011

• Abstract
• PDF (2.565 MB)
• References

Open Access

A clustering-based supervised approach for anomaly detection in building energy consumption 02012

Beyza Nur Cansever and Mehmet Zeki Konyar

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702012

• Abstract
• PDF (1.445 MB)
• References

Open Access

Comparison of monofacial and bifacial photovoltaic panel performances for two similar snowy winter days with different levels of illumination 02013

Ventsislav Keseev, Boris Evstatiev, Nicolay Mihailov and Nikolay Valov

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702013

• Abstract
• PDF (1.816 MB)
• References

Open Access

Integrated hydrological–energy analysis of a hypothetical forebay storage system for enhancing run-of-river hydro-power generation 02014

Eliza-Isabela Tică, Angela Neagoe, Florica Popa, Ángel Gómez Hurtado and Bogdan Popa

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672702014

• Abstract
• PDF (3.593 MB)
• References

Open Access

On the issue of modernization of steam-gas power units 03001

Hristo Beloev, George Marin, Leonid Zverev, Ivan Beloev, Iliya Iliev and Yuliya Valeeva

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672703001

• Abstract
• PDF (1.971 MB)
• References

Open Access

GIS-based assessment of soil erosion risk in a post-nuclear landscape: A morphometric approach using ALOS PALSAR DEM 03002

Zhandos Mukaliyev, Zhazira Zhumatayeva and Nurgul Janaliyeva

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672703002

• Abstract
• PDF (7.669 MB)
• References

Open Access

Power electronics-based voltage stability enhancement in smart distribution networks using solar PV and DVR under a green energy framework 03003

Seher Kadirova, Jayant Kulshreshtha, Riaz Kurbanali Israni, Tsvetelina Stefanova, Tsvetozar Georgiev and Amit Lathigara

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672703003

• Abstract
• PDF (5.473 MB)
• References

Open Access

Analysis of voltage stability characterization of radial distribution grids with high penetration of distributed energy resources 03004

Todor Todorov, Ivaylo Stoyanov and Teodora Hristova

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672703004

• Abstract
• PDF (1.755 MB)
• References

Open Access

Measurement of hydrogen content in gas mixtures 03005

Augun Safarova and Elchin Melikov

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672703005

• Abstract
• PDF (2.439 MB)
• References

Open Access

Optimally tuned PI controller for V/f control of induction motor using Matlab/Simulink 03006

Donka Ivanova, Anka Krasteva and Vyara Ruseva

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672703006

• Abstract
• PDF (2.439 MB)
• References

Open Access

Urban wastewater treatment with combinations of electrooxidation – photocatalysis and electrocoagulation – photocatalysis 03007

Demetrios Marmanis, Kalliopi Ladomenou, Jacob G. Fantidis, Kyriaki Marmani, Vassiliki Mesazou and Demetrios Zisiadis

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672703007

• Abstract
• PDF (1.751 MB)
• References

Open Access

Modeling of an induction motor centrifugal-pump system under variable speed conditions 03008

Gencho Popov, Kaloyan Totev and Donka Ivanova

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672703008

• Abstract
• PDF (2.024 MB)
• References

Open Access

Development and experimental performance of micro-CSP heliostat controllers under IEC 62817 criteria 03009

Esteban López, Jordan Pacheco and William Oñate

Published online: 27 July 2026

DOI: https://doi.org/10.1051/e3sconf/202672703009

• Abstract
• PDF (5.057 MB)
• References