Tomasz BakońWarsaw University of Life Sciences - SGGW | SGGW · Department of Fundamentals of Engineering and Energy
Tomasz Bakoń
Doctor of Engineering
About
83
Publications
1,479
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120
Citations
Citations since 2017
Introduction
Please find more information about me in the following links:
ORCID -----> https://orcid.org/0000-0002-2028-6881
Linkedin -----> https://www.linkedin.com/in/bakont/
Google Scholar -----> https://scholar.google.pl/citations?user=FKzCQv8AAAAJ
Publications
Publications (83)
The article describes the current state and potential directions of development of photovoltaic generators along with the possibility of optimizing their operation through the structure of the system itself, location and energy storage.
This article describes the current status and development prospects for energy clusters in Poland.
This article presents a comparison of electricity production with the use of photovoltaic generators made in mono and bifacial technology on various backgrounds. In each case, an increase in energy production was observed. Basic information about the bifival technology is also included.
This article describes the current state and the possibilities of supporting of photovoltaic generators and installations by an energy storage. Potential benefits and limitations in the development of cooperation between these technologies were indicated and their market in Poland was described.
This article presents the design and operational factors influencing the accuracy of temperature measurement using tactile methods. The measurement sensors and their metrological properties were reviewed. The influence of determining the inverse characteristics of thermocouples on the uncertainty of temperature measurement was also taken into accou...
This article presents practical guidelines for the selection of the calibration interval of measuring instruments. The influence of the device itself as well as external factors was shown, methods allowing for adaptive selection of calibration interval were presented. The presented theoretical remarks ware illustrated with examples for temperature,...
Significant errors may occur when estimating daily solar radiation in central Europe using empirical models based on air temperature (especially in the winter months). The first goal of this article is to investigate to what extent it is possible to increase the accuracy of the Hargreaves and Samani model, by using the calibration dedicated for eac...
One of the most important problems of operating solar heating systems involves variable efficiency depending on operating conditions. This problem is more pronounced in hybrid energy systems, where a solar installation cooperates with other segments based on conventional carriers of energy or renewable sources of energy. The operating cost of each...
The aim of this study was to investigate the pressure agglomeration process of wheat straw (WS) and the blends of WS with calcium carbonate (CC) or cassava straw (CS) with a ratio of 6% wt./wt. from seven separate fractions with sizes in the range of 0.21–2.81 mm. The agglomeration was performed at a moisture of 30% wb and a material temperature of...
This article presents practical guidelines for calibrating of pyrometers and infrared cameras. Remarks were preceded by short theoretical introduction regarding the basics of radiation thermometers and basic information about measuring instruments for remote temperature measurement.
The current inability of electricity store in large amounts is the basic reason for shaping the electricity sector in its centralized current form. This article presents the currently available technologies and actions necessary to be taken in the near future to increase the energy stored in the system, as well as the estimated costs of such invest...
This article presents technologies used in energy storage and the use of energy storage in on-grid and off-grid applications. The focus was mainly placed on technologies that use energy storage in the form of electricity and heat.
This article presents the theoretical foundations, construction and laboratory verification of a prototype test stand for calibration of radiation thermometers with an accuracy better than 0.5°C. The stand was designed and built based on the idea of a virtual instrument. In the designed prototype, the digital processing of measurement data is carri...
Overheat—it is a negative phenomenon which occurs in solar heating systems due to lack of power consumption. As a result, working fluid, in this case propylene glycol, undergoes phase changes by expanding, which shortens its service life and may unseal the installation and cause an air lock. In practice, there are different methods of preventing th...
Phase change materials (PCM) are substances with specific heat that varies in response to the temperature changes and increases rapidly in temperature of phase transition. It means that heat capacity of PCM tank compared to heat capacity of water tank at the same volume is several times higher. This gives the possibility for long-term heat and cold...
Control algorithm is the most important element of hybrid energy system while it is in operation. It determines energy effects of each segment of system, which has influence on efficiency of whole system and operating costs. This paper presents the results of research studies which enabled control algorithm of hybrid energy system combining heat pu...
This paper contains description of the smart database with usage profiles and technical data for main thermal energy storage system (TESS) components: solar thermal collectors, compressor heat pump with vertical ground heat exchanger without and with phase change material (PCM) in boreholes, hot and cold PCM tanks, domestic hot water (DHW) tank and...
This paper analyses the thermal states of the flat solar collector using the state variable method. The knowledge of the transient states describing the state of the solar heating installation under operating conditions enables the analysis of the heat exchange process and the development of control strategies. The analysis of variable states under...
In solar heating systems with an absorber area of more than 20 m ² , a plate heat exchanger is used as a separator between the primary glycol-based refrigerant and secondary water. The use of a plate heat exchanger enables an increase in the heat exchange area compared to the standard coil heat exchangers located inside the domestic hot water tank....
One of the problems with the operation of solar heating systems is the variable capacity of the system dependent on the prevailing operating conditions. One of the methods for increasing the capacity of a solar system is to control the volume flow of the working medium. Volume flow of working medium in solar heating installation should be follow op...
The Energy Performance of Buildings Directive (EPBD) requires that all new buildings will have nearly zero-energy by the end of 2020, indicating that the low amount of energy that these buildings will require comes mostly from renewable energy sources.
The size of each section of the thermal energy storage system (TESS) and obtained efficiency and...
This paper presents the method of a solar heating system diagnostics allowing determination of the following coefficients in operating conditions: heat loss coefficient ULK, collector efficiency factor F’ and heat removal factor FR related to the collector static properties, effective heat capacity (mc)e and time-constant Tz related to the collecto...
The article presents basic parameters and comparison of devices used in control systems (PLC controllers, industrial computers, programmable automation controllers and microprocessor systems). Comparisons were made for use in an adaptive building heating control system with the possibility of energy storage. The first part of the article discusses...
This article presents selected issues of erosion and contamination of wind turbines blades and their impact on aerodynamics which directly affects the obtained performance of wind power plant. The main focus is on meteorological and biological factors such as wind and particles of sand and dust carried with it as well as rain and insects.
Market o...
The article presents basic parameters and comparison of devices used in control systems (PLC controllers, industrial computers, programmable automation controllers and microprocessor systems). Comparisons were made for use in an adaptive building heating control system with the possibility of energy storage. The first part of the article discusses...
This presentation describes selected issues of erosion and contamination of wind turbines blades and their impact on aerodynamics which directly affects the obtained performance of wind power plant. The main focus is on meteorological and biological factors.
This article presents selected issues related to erosion and pollution on wind turbine blades and their impact on aerodynamic, which is directly transferred into the obtained performance. This paper focus on atmospheric and biological factors such as wind and particles of dust and sand carried with it, as well as rain and insects.
In this study an evaluation of wind energy resources at a given area was presented. The
location was a farmland of the Agriculture Experimental Institute of Warsaw University
of Life Sciences – SGGW in Poland. On the basis of meteorological measurements for a few heights an average wind speeds, a Weibull shape and scale parameters as well as wind p...
Postęp i rozwój urządzeń OZE powoduje, że posiadają one większą moc znamionową, wyższą sprawność, niższe koszty eksploatacyjne oraz spełniają w większym stopniu wymagania dotyczące przyłączenia do sieci elektroenergetycznej stawiane konwencjonalnym źródłom energii. W tabeli 1 zestawiono aktualne dane dotyczące polskich elektrowni wiatrowych i fotow...
This paper presents the impact of renewable energy sources on the stability of small energy system. Analyses based on the real system located in the Maltese Islands, which was connected scarcely in 2015 with undersea cable to Sicily.
In accredited laboratories, the calibration of industrial platinum resistance thermometers (IPRT) are generally conducted by using the comparative method. The metrological properties of the IPRT are expressed by Callendar-van Dusen (CvD) equation. For IPRT, the equation contained in the IEC 60751 norm is accepted.
To determine the coefficients in e...
Die Ausarbeitung stellt die Repowering als Methode zur Verbesserung der Energieeffizienz. Der Fokus liegt auf Windkraft und Photovoltaik als Energiesektoren in denen dieses Phänomen im erneuerbaren Energiebereich am profitabelsten ist. Augenmerk wurde auf das Problem der Entsorgung von demontierten Anlagen gerichtet. Die Analyse wurde mit entsprech...
This paper presents the repowering phenomenon in photovoltaic sector. Attention was drawn to the problem of dismantled photovoltaic panels. An example analysis of the repowering of photovoltaic power plant is presented.
This paper presents the issue of standardization and certification of photovoltaic cells in relation to the existing rules and technical requirements.
Research Topics:
Power electronic use in the large and small electricity system
Exchange of experiences on grid effects caused by power electronics devices installed in the wind turbines in the electricity system
Study of the differences and similarities between existing wind turbines in Poland and possible configurations for Malta for the electric...
This paper presents the influence of temperature, dirtiness and tracking system on the energy efficiency of photovoltaic cells.
This paper presents the demand for raw materials, area and impact on the environment of photovoltaic power plants compared to other types of power plants using renewable energy sources and fossil fuels.
This paper presents what should contain and how to prepare measurement procedure. General guidelines has been illustrated with simple example – analog voltmeter calibration procedure.
This presentation illustrates the repowering phenomenon in wind energy sector. Attention was drawn to the problem of dismantled wind turbines development. Repowering analysis is complemented with appropriately selected examples.
This paper presents the influence of thermoelectric inverse characteristics on the uncertainty in the calibration of measurements instruments intended for use with thermocouples. Calibration methods for temperature indicators and simulators recommended by EURAMET for use in accredited laboratories are described in guide [7]. Table 1 presents the fr...
Growing demands for power quality and increasing contribution of grid connected renewable energy sources force to use greater amount of power electronic devices. This presentation submits the analyses of error sources by generation and measurement of electrical values in converter supported AC grids and their impact on the power quality.
Growing competition and market requirements cause that increasing number of companies are implementing management systems consistent with international standards. These systems include also measurement issues. This presentation presents metrology agenda for Management and Production Engineering field of study, whose important part is get students r...
This paper presents prevention and de-icing methods used in energy wind turbines. The presentation was introduced with description of damages and effects caused by icing.
Indicators intended for use with thermocouples best to calibrate with complete measuring chain. This is not always possible, however because of e.g. the permanent connection of the sensor or the necessity for frequent sensor replacement. This paper presents procedures in such situation and measurement errors occurring then with particular reference...
This paper presents universal laboratory model of separated grid powered by IGBT converter. Constructed laboratory setup allows free shaping of phases voltage waveforms, dynamic grid and load reconfiguration also short-circuits, faults and errors modeling.
This paper presents the repowering phenomenon in wind energy sector. Attention was drawn to the problem of dismantled wind turbines development. Repowering analysis is illustrated with appropriately selected examples.
Without the components made of electrical steel is difficult to imagine an electrical motor, generator or transformer. This paper presents the influence of the most commonly processes encountered during the processing of non-oriented electrical steels to the deterioration of the magnetic properties. The influence of welding, sticking, cutting, pres...
This paper presents methods for calibrating thermostatic chambers recommended by organization EURAMET for use in accredited laboratories [4]. Fig. 1 shows the localization of measurement points for calibration of the whole thermostatic chamber according to [6] (method A and B [5]). Figs. 2 and 3 show exemplary waveforms of the temperature measured...
In many applications – especially for the less accurate measurement instruments and multimeters – measuring device error need not always be determined on the basis of the valid calibration certificate. It is sufficient, often because of the user comfort, that the compliance with the specification was confirmed by calibration results, that is in the...
W artykule zostały zaprezentowane wyniki wieloletnich wzorcowań rezystorów wzorcowych, na podstawie których można wyznaczyć długoterminowe zmiany ich rezystancji. Badane rezystory charakteryzowały się stabilnością ok. 0,01 % wartości nominalnej na przestrzeni ok. 35 lat. Rozpatrując stabilność długoterminową, należy uwzględnić niepewność wyznaczeni...
W artykule przedstawiono zbudowany w Instytucie Energetyki generator temperatury punktu rosy. Parametry metrologiczne zbudowanego generatora, potwierdzone w wyniku testów, w najbliższej przyszłości pozwolą Laboratorium Aparatury Pomia-rowej ubiegać się o akredytację PCA na wzorcowanie w poddziedzinie temperatury punktu rosy. Umocni to wiodącą pozyc...
This paper describes instruments for temperature measurement used in industry and environment protection. Authors present method of instrument selection, range of sensors, factors affecting the measurement accuracy and insulation materials for temperature sensors.
In this article author presents selected problems by monitoring of measuring instruments, measurement results and validation of measurement procedures use laboratory quality systems based of ISO/IEC 17025 standard.
W artykule przedstawiono system kontrolno-pomiarowy nadzorujący pracę stanowiska badawczego modelującego sieć o zmiennej konfiguracji i obciążeniu zasilaną z przekształtnika tranzystorowego. Do celów badawczych wskazane było zastosowanie systemu zawierającego dwa komputery PC umożliwiającego znacznie szybszą możliwość modyfikacji algorytmu sterowan...
Measurement costs are not only limited for shopping of measuring equipment. Accurate execution of measurement requires also investments in preparation of measurement procedures, calibration and maintenance of measuring instruments, documentation management and staff training. In this article authors present directions how, without measurement resul...
Quality systems leave the choice of the intervals between successive calibrations of measuring instruments to the user. In this article the author is guided by the experience of laboratory work (in an accredited laboratory too), presents what should be paid attention to choose the calibration frequency of instruments for measuring temperature, humi...
W artykule przedstawiono zbudowane w Katedrze Elektroenergetyki i Energoelektroniki Uniwersytetu Ruhry w Bochum interaktywne ćwiczenie laboratoryjne sterowane za pośrednictwem internetu, demonstrujące kompensację mocy biernej i wyższych harmonicznych. Wersja podstawowa i rozszerzona obsługi eksperymentu pozwala na dostosowanie poziomu edukacyjnego...
Artykuł zawiera podstawy teoretyczne, wyniki symulacji oraz rezultaty weryfikacji praktycznej metody dwóch macierzy porównawczych do detekcji typu i miejsca szkodzenia
w czteroprzewodowych, trójfazowych sieciach zasilanych przekształtnikami tranzystorowymi. Metoda ta identyfikuje awarię na podstawie pomiaru prądów fazowych i porównaniu ich z wartoś...
This paper presents a new method for the detection of error states in four-wire three-phase grids. The method bases on the measurement of phase currents. The type of fault and its location in the transmission line is detected. The final goal of the scientific work is to eliminate the fault current at the location of the fault, primarily for earth f...
The processing steps during the production of magnetic cores for electric machines and devices, e.g. cutting, pressing, welding, riveting or automatic stacking can deteriorate the magnetic properties of the core material. In this paper, the influence of welding and sticking on the magnetic properties of non-oriented electrical steels will be presen...
The measuring system for two-dimensional testing of electrical steel is proposed. In this system the sample in the form of a sheet can be magnetised along arbitrary direction. The magnetizing conditions, the dimensions of the yoke and sheet, the methods of detection of magnetic field strength and flux density are discussed. Both components of magne...
This paper present a new measuring method of magnetic properties of non-oriented silicon steel. The method take into consideration influence of some manufacturing processes under construction rotating machines over changes of magnetic properties.
Printed in Prace Komisji Metrologii Oddziału PAN w Katowicach, Seria: Konferencje Nr 3,
ISBN 83-913552-...
Projects
Projects (5)
The main objective of BUILD2050 is to contribute to improve the construction renovation and operation of healthy and sustainable buildings at European level through the development of an integrated and transnational training.
The MODENERLANDS Action aims to merge and systematise the efforts of the European Research and Development (R&D) groups working on Sustainable Energy and the related technologies, in particular, wind and wave energy sources.
The Action aims to address efficient Wireless Power Transmission (WPT) circuits, systems and strategies specially tailored for battery-less systems. Battery-free sensors, passive RFID, Near Field Communications (NFC) are all closely related concepts that make use of WPT and energy harvesting systems to remotely power up mobile devices or to remotely charge batteries, contributing to develop and foster the Internet of Things (IoT) evolution. In this context, this Action aims at bringing together RF circuit and system designers with different backgrounds to: 1) provide enhanced circuit and subsystem solutions to increase the efficiency in WPT; and 2) investigate the use of novel materials and technologies that allow minimizing cost and maximizing integration of the electronics with the environment and with the targeted applications. The Action expected benefits include the creation of a wide network of experts both from academia and industry that can address the existing and upcoming challenges in wireless power transmission scenarios in an interdisciplinary manner paving the way for the future generations of wireless power transmission solutions and the associated regulation. COST is an ideal framework towards joining efforts at an international level and establishing Europe as a leading scientific and industrial community in the field of wireless power transmission.
European Commission 2013-10 to 2017-10
GRANT_NUMBER: Action IC1301
URL: http://www.cost.eu/COST_Actions/ict/IC1301?
