March 2024, Issue 3 (837)
TABLE OF CONTENTS
Marek Pronobis
Strategies for modernization of pulverized coal boilers in the Polish power system
Julian Wiatr
UPS devices as components of electro-medical equipment energy supply systems
Bogumił Dudek
Considerations on electrical hazards in the contemporary natural elements
POWER ENGINEERING – SCIENCE – INDUSTRY
Bogumił Dudek, Marek Jaworski, Edward Ziaja
The history of the ELSAF conference before the upcoming 25th edition in 2025
SEP. EVENTS, FACTS, FEEDBACK
Karol Adamiak
Codes of ethics – pros and cons
POLISH POWER ENGINEERS
Piotr MOLSKI (1945 – 2023)
COLUMNS ON TIME
Bogumił Dudek
Arcadia and dystopia
SUMMARIES
Marek Pronobis
Strategies for modernization of pulverized coal boilers in the Polish power system
The need to eliminate fossil fuels from the energy sector entails not only technical but also political decisions of significant economic importance. To undertake them, an objective analysis based on verified data is necessary. The paper presents, for Polish conditions, such an analysis regarding the modernization of pulverized fuel boilers, consisting in replacing coal with low carbon footprint (CFP) fuels. The problem, however, is the choice of the right fuel, because a simple calculation of the CFP based on the share of CO2 in the exhaust gas describes only the so-called direct CFP resulting from fuel combustion. The indirect one, which results from various accompanying processes, is often overlooked. The paper analyzes the total CFP of solid fuels, natural gas and green ammonia. Taking into account the ecological advantages of solid biomass, possible solutions for combustion of these fuels in modernized Polish boilers are presented.
Julian Wiatr
UPS devices as components of electro-medical equipment energy supply systems
Together with designing energy supply systems for health care facilities there arise numerous doubts resulting from the expected level of electric energy supply reliability and maintaining the required level of the electric shock protection. The lack of detailed guidance in this regard leads very often to erroneous understanding of this problem by investors and designers. The present paper is an attempt to fill the gap in this respect.
Bogumił Dudek
Considerations on electrical hazards in the contemporary natural elements
Ancient elements – Fire, Water, Earth and Air – lay at the foundation of the formed in the industrial era control of electrical hazards during floods, fires, windstorms and earthquakes adequatly to progressive achievements in science and practice. Modern elements – gravity, electromagnetism, strong and weak interactions –present new challenges for verification of the control of electrical hazards with the need to identify them and make an assessment of the risk in the more and more complex working processes. The development of AI, automation and robotization, telecommunication and computerization (in addition, all that in the shadows of pandemic and war) give new impulse for considerations on places and ways to perform work.
