January 2025, Issue 1 (847)

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TABLE OF CONTENTS

 

Jacek Marecki, Mieczysław Ronkowski
Patron of the Year 2025 of Polish electricians
Professor Kazimierz Kopecki (1904-1984)

 

Krzysztof Konopka, Zdzisław Konopka
Directions in energy transition of heating

Krzysztof Bodzek, Arkadiusz Domoracki, Błażej Brudny, Mateusz Hoder, Paweł Styra, Łukasz Szopa
Analysis of efficiency of electric energy generation from double-sided PV modules with single-axis positioning system

Ryszard Bartnik
Analysis of efficiency of energy and economic modernization of supercritical live steam parameters hard coal-fired plants
by application of a high-temperature nuclear reactor HTGR and a turboexpander TE

 

POWER ENGINEERING AND PRODUCTION COMPANIES

Paweł Telega, Marek Niemczyk, Krzysztof Kaleta, Jerzy Kasperek
Energy storage as an optimization solution for households and small businesses

Paweł Telega, Marek Niemczyk, Krzysztof Kaleta, Jerzy Kasperek
Industrial energy storage as an investment in energy independence for enterprises

 

Jerzy Piotr Bednarek
Car hydrogen-powered engine (latest version)

 

THROUGH THE EYE OF A WORLD TRAVELER

Stefan Gierlotka
Production of car batteries from Bolivian lithium

 

SEP. EVENTS, FACTS, FEEDBACK

Bogumił Dudek
30th anniversary of INPE celebrated during the Gdańsk Electricity Days 2024

 

TIMELY COLUMNS

Bogumił Dudek
New Year’s Perpetual Motion Machine

 

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SUMMARIES

 

Jacek Marecki, Mieczysław Ronkowski
Patron of the Year 2025 of Polish electricians
Professor Kazimierz Kopecki (1904-1984)
The article presents the biography of Professor Kazimierz Kopecki (1904-1984): the period of studies at the Lviv Polytechnic, the period of work at the Pomeranian National Power Plant „Gródek” under the management of engineer Alfons Hoffmann, the period of work at the Gdańsk University of Technology. In April 1945 he came to Gdańsk and took part in the reconstruction and organization of the Gdańsk University of Technology. He was appointed to the position of Dean of the Faculty of Electrical Engineering and in November 1945 he took over lectures at the Faculty of Electrical Engineering of the Gdańsk University of Technology. He organized a department at the Faculty of Electrical Engineering of the Gdańsk University of Technology, which in the years 1945-1953 existed under the name of the Department of Electrical Devices, Networks and Electrical Economy, then it was renamed the Department of Power Engineering, and in the years 1969-1991 it was part of the Institute of Power Engineering and Automation of the Gdańsk University of Technology. K. Kopecki’s scientific activity, conducted at the Department of Power Engineering until 1969, and later at the Institute of Power Engineering and Automation at the Faculty of  Electrical Engineering of Gdańsk University of Technology, included mainly: research on energy costs, reliability of power systems and optimization models for the development and management of large systems; complex energy.

 

Krzysztof Konopka, Zdzisław Konopka
Directions in energy transition of heating
In the light of the ongoing discussion concerning the energy transisiton of heating targeted first of all towards district heating and at the same time created by heating corporations in the direction of incremental transition [1], presented is some other direction in energy transition of heating – transition to CHP (heat and power generation), i.e. in the direction of breakthrough transition [1], and there have been given logic reasons for this. Discussed are „for” and „against” arguments for both directions of this transition. Analysed are the costs of district heating transition for both trajectories. Characterized are chances of the breakthrough transition. The „extraordinariness” in the approach to district heating energy transition will create resistance and even protests from representatives of institutions whom this „extraordinariness” disturbs their existential calmness and negates efforts to burden the society with costs of transisiton by requesting government guarantees securing these costs. This „extraordinariness” of heating transition is the continuity of the „extraordinariness” of Mr Prof. Jan Popczyk works concerning energy transition to electroprosumerism – the breakthrough transition.

 

Krzysztof Bodzek, Arkadiusz Domoracki, Błażej Brudny, Mateusz Hoder, Paweł Styra, Łukasz Szopa
Analysis of efficiency of electric energy generation from double-sided PV modules with single-axis positioning system
Presented are results of efficiency tests of standard and bifacial PV modules. Tests were conducted on a test stand designed in the frames of the Initiative Excellence – Research University and realized by students of Electrical Engineering and Automatic Control, Electronics and Computer Science Faculties at the Silesian University of Technology. The test stand was equipped with a mobile platform and a single-axis solar tracking system which enabled precise measurement of modules working parameters under changing light and environmental conditions. There was applied the HMS-1000-2T microinverter and a data aquisition system that enabled a detailed analysis of modules efficiency. The results show that the bifacial modules generated on average 5-8% energy more than the standard ones what resulted from the absorption of reflected solar radiation emphasizing the advantage of the double-sided modules technology.

 

Ryszard Bartnik
Analysis of efficiency of energy and economic modernization of supercritical live steam parameters hard coal-fired plants
by application of a high-temperature nuclear reactor HTGR and a turboexpander TE
Presented are thermodynamic and economic analyses of a supercritical live steam parameters hard coal-fired power plant modernization to an emission-free block. This modernization consists in the replacement of a coal boiler with a high-temperature nuclear reactor HTGR, turboexpander TE and a steam generator SG. So, there are then in the power plant realized two cycles in a hierarchical system – an additional high-temperature Joule cycle with helium as the circulation agent and the coupled with it the hitherto used low-temperature Clausius-Rankin cycle. The output of the power plant from before the modernization NelTP stays the same as all mass streams and thermal parameters of water and steam in the Clausius-Rankin cycle realized in the steam part of the modernized power plant do not change – they are exactly as they were before the modernization. The new installations like HTGR, TE etc. replacing the coal-fired boiler CFB „adjust” to thermodynamic parameters of the existing power plant but its total capacity after modernization is increased by the output of the turboexpander NelTE. The economic efficiency of the modernized power plant also grows significantly in comparison with its efficiency from before the modernization even in the situation when there are no CO2 charges.

 

Jerzy Piotr Bednarek
Car hydrogen-powered engine (latest version)
The article presents the latest proprietary version of a hydrogen car engine. It describes the production of hydrogen in the car (without hydrogen refueling) for internal combustion car engines, without significant design changes.