Rok 2025

• Electrifying the bus network with trolleybus: Analyzing the in motion charging technology

  Publikacja

  • M. Bartłomiejczyk
  • P. Caliandro

  - APPLIED ENERGY - Rok 2025

  Currently, electric buses are becoming more and more popular, and their number in operation is increasing. The range of electric buses is also increasing and solutions that seem to be working almost without fixed infrastructure are being promised. However, this requires the use of high-capacity batteries, which increases the weight and price of the vehicle and causes high costs of battery replacement during operation. Moreover,...

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Rok 2024

• Game theory-based virtual machine migration for energy sustainability in cloud data centers

  Publikacja

  • F. J. Maldonado-Carrascosa
  • S. García-Galán
  • M. Valverde-Ibáñez
  • T. Marciniak
  • M. Szczerska
  • N. Ruiz-Reyes

  - APPLIED ENERGY - Rok 2024

  As the demand for cloud computing services increases, optimizing resource allocation and energy consumption has become a key factor in achieving sustainability in cloud environments. This paper presents a novel approach to address these challenges through an optimized virtual machine (VM) migration strategy that employs a game-theoretic approach based on particle swarm optimization (PSO) (PSO-GTA). The proposed approach leverages...

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Rok 2023

• The importance of individual spray properties in performance improvement of a urea-SCR system employing flash-boiling injection

  Publikacja

  • B. Kaźmierski
  • Ł. J. Kapusta

  - APPLIED ENERGY - Rok 2023

  The appropriate mixing of a urea–water solution (UWS) with exhaust gases in a selective catalytic reduction system is crucial to efficiently reduce nitrogen oxides and diminish the deposition of liquid wall film. One of the methods to enhance the mixing of the UWS with the exhaust gases is a flash-boiling injection. Its positive effect has been linked with a reduced Sauter mean diameter (SMD) and improved evaporation, but the...

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Rok 2021

• Integrated plant-wide modelling for evaluation of the energy balance and greenhouse gas footprint in large wastewater treatment plants

  Publikacja

  • E. Zaborowska
  • K. Czerwionka
  • J. Mąkinia

  - APPLIED ENERGY - Rok 2021

  Modern wastewater treatment plants (WWTPs) should maintain a balance between three combined sustainability criteria, including effluent quality, energy performance and greenhouse gas (GHG) emissions. All of these criteria were considered in the integrated plant-wide model developed in this study. The proposed model incorporates new features, including: (i) the addition of associated facilities to the overall energy balance and...

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Rok 2020

• The impedance of hydrogen oxidation reaction in a proton exchange membrane fuel cell in the presence of carbon monoxide in hydrogen stream

  Publikacja

  • K. Darowicki
  • Ł. Gaweł
  • M. Mielniczek
  • A. Zieliński
  • E. Janicka
  • J. Hunger
  • L. Jorissen

  - APPLIED ENERGY - Rok 2020

  Evaluation of performance of a proton exchange membrane fuel cell, which is affected by carbon monoxide that pollutes the hydrogen stream, was presented. This influence was studied for carbon monoxide concentration of 125–325 ppb, which are close to values specified in ISO 14687:2019 standard. Performed studies provided crucial information for further development of fuel cell as an energy source for automotive application. Impedance...

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Rok 2019

• A model development and experimental verification for a vapour microturbine with a permanent magnet synchronous generator

  Publikacja

  • W. Włodarski

  - APPLIED ENERGY - Rok 2019

  Vapour microturbines with permanent magnet synchronous generators are implemented in micropower plants for dispersed power generation systems. The dynamic model of such a microturbine set was developed and presented. The developed relations result from the generic equations. Experimental data for two different working medium were used for model verification. A microturbine set model was tested during the changes in the parameters...

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• Improved energy management technique in pipe-embedded wall heating/cooling system in residential buildings

  Publikacja

  • M. Krzaczek
  • J. Florczuk
  • J. Tejchman

  - APPLIED ENERGY - Rok 2019

  Effective and environmentally responsive techniques of energy management in residential buildings are desirable for the resulting reduction of energy costs and consumption. In this paper, an improved and efficient technique of energy management in pipe-embedded wall heating/cooling systems, called the Thermal Barrier, is described. Specifically, the Thermal Barrier is a technique focused on the management and control of heat...

• Improved energy management technique in pipe-embedded wall heating/cooling system in residential buildings

  Publikacja

  • M. Krzaczek
  • J. Florczuk
  • J. Tejchman

  - APPLIED ENERGY - Rok 2019

  Effective and environmentally responsive techniques of energy management in residential buildings are desirable for the resulting reduction of energy costs and consumption. In this paper, an improved and efficient technique of energy management in pipe-embedded wall heating/cooling systems, called the Thermal Barrier, is described. Specifically, the Thermal Barrier is a technique focused on the management and control of heat supply...

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• Performance of microbial fuel cells operated under anoxic conditions

  Publikacja

  • S. Marks
  • J. Mąkinia
  • F. Morales

  - APPLIED ENERGY - Rok 2019

  Nowadays, microbial fuel cells (MFC) stand up as a promising renewable energy source. Due to the ability of the MFC to oxidize a wide spectrum of substrates, wastewater seems to be one of the most interesting fuels. Unfortunately, wastewater could contain electron acceptors such as nitrate, which could interfere with the electrical performance of the MFC. In this work, the influence of oxidised nitrogen forms on the electricity...

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• The influence of dynamic load changes on temporary impedance in hydrogen fuel cells, selection and validation of the electrical equivalent circuit

  Publikacja

  • K. Darowicki
  • E. Janicka
  • M. Mielniczek
  • A. Zieliński
  • Ł. Gaweł
  • J. Mitzel
  • J. Hunger

  - APPLIED ENERGY - Rok 2019

  To achieve optimal performance of a fuel cell, a reliable monitoring and diagnostic method is required. The currently utilized methods give limited information or they are impossible to use under dynamic working conditions. To obtain comprehensive information about the fuel cell operation we utilized novel dynamic electrochemical impedance spectroscopy. Impedance measurements in dynamic mode were performed on a hydrogen fuel cell,...

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Rok 2016

• Two-phase optimizing approach to design assessments of long distance heat transportation for CHP systems

  Publikacja

  • P. Hirsch
  • K. Duzinkiewicz
  • M. Grochowski
  • R. Piotrowski

  - APPLIED ENERGY - Rok 2016

  Cogeneration or Combined Heat and Power (CHP) for power plants is a method of putting to use waste heat which would be otherwise released to the environment. This allows the increase in thermodynamic efficiency of the plant and can be a source of environmental friendly heat for District Heating (DH). In the paper CHP for Nuclear Power Plant (NPP) is analyzed with the focus on heat transportation. A method for effectivity and feasibility...

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Rok 2015

• Concept of the multidimensional diagnostic tool based on exhaust gas composition for marine engines

  Publikacja

  • J. Kowalski

  - APPLIED ENERGY - Rok 2015

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Rok 2014

• An assessment of regulated emissions and CO2 emissions from a European light-duty CNG-fueled vehicle in the context of Euro 6 emissions regulations

  Publikacja

  • P. Bielaczyc
  • J. Woodburn
  • A. Szczotka

  - APPLIED ENERGY - Rok 2014

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• Use of Modified Cuckoo Search algorithm in the design process of integrated power systems for modern and energy self-sufficient farms

  Publikacja

  • J. Piechocki
  • D. Ambroziak
  • A. Pałkowski
  • G. Redlarski

  - APPLIED ENERGY - Rok 2014

  In the face of increasingly stringent pollutant emission regulations, designing an agricultural holding becomes a difficult challenge of connecting a large number of coefficients that describe an energy system of a farm in regard to its ecological and economic efficiency. One way to cope with this issue is to design an energy self-sufficient farm that integrates various technologies, including renewable energy. However, the selection...

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Rok 2002

• Natural convective heat-transfers from an isothermal horizontal hemispherical cavity

  Publikacja

  • J. M. Khubeiz
  • E. Klugmann-Radziemska
  • W. Lewandowski

  - APPLIED ENERGY - Rok 2002

  Przedstawiono rozwiązanie analityczne oraz wyniki badań eksperymentalnych i numerycznych konwekcyjnej wymiany ciepła od poziomej izotermicznej kulistej wklęsłej powierzchni.