Dariusz Suszanowicz - Academia.edu (original) (raw)

Papers by Dariusz Suszanowicz

Research paper thumbnail of Modeling the Consumption of Main Fossil Fuels in Greenhouse Gas Emissions in European Countries, Considering Gross Domestic Product and Population

Energies, Dec 3, 2023

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Research paper thumbnail of Modelowanie strat energii z budynku inwentarskiego

A-koncepcja B-zestawienie danych C-analizy statystyczne D-interpretacja wyników E-przygotowanie m... more A-koncepcja B-zestawienie danych C-analizy statystyczne D-interpretacja wyników E-przygotowanie maszynopisu F-przegląd literatury Modelowanie strat energii z budynku inwentarskiego Dariusz SUSZANOWICZ ABCDE Uniwersytet Opolski, Samodzielna Katedra Inżynierii Procesowej Streszczenie W pracy przedstawiono sporządzony model matematyczny strat energii z budynku inwentarskiego. Model taki umożliwi określenie wymaganych parametrów termicznych przegród, systemów ogrzewania wykorzystujących odnawialne źródła energii oraz systemów wentylacji w budynkach inwentarskich, ze szczególnym uwzględnieniem chlewni. Wyniki symulacji, wykonanych za pomocą przygotowanego modelu, zweryfikowano, wyznaczając rzeczywiste zapotrzebowanie na energię dwóch istniejących chlewni. Model strat energii w sposób zadowalający odzwierciedla zapotrzebowanie na energię końcową. W przypadku projektowania budynku pozwala określić przyszłe zapotrzebowanie na energię, a w przypadku budynków istniejących umożliwia planowanie efektów przygotowywanej termomodernizacji. Słowa kluczowe: budownictwo wiejskie, modelowanie, energochłonność, straty energii, wewnętrzne zyski ciepła Wstęp Zgodnie ze zmianami ustawy Prawo budowlane od początku 2009 r. wprowadzono obowiązek sporządzania świadectw charakterystyki energetycznej budynków mieszkalnych. Ocena zapotrzebowania na energię dotyczy wszystkich budynków, w których znajdują się instalacje ogrzewania bądź chłodzenia. Do budynków takich należą również budynki wiejskie, ze szczególnym uwzględnieniem budynków inwentarskich. Wyznaczono nowe trendy projektowania budynków z uwzględnieniem zapotrzebowania na nieodnawialną energię pierwotną oraz prowadzenia prac termomodernizacyjnych budynków. Precyzyjne wyznaczenie zapotrzebowania na energię do celów ogrzewania, wentylacji, przygotowania ciepłej wody użytkowej oraz oświetlenia wbudowanego umożliwia określenie zmian mikroklimatu w pomieszczeniach inwentarskich w każdym okresie roku, z uwzględnieniem m.in. wpływu akumulacji cieplnej w przegrodach oraz w gruncie pod posadzką.

Research paper thumbnail of Badania skuteczności wentylacji pomieszczeń sypialni w wielorodzinnych budynkach mieszkalnych

Proceedings of ECOpole, 2017

Skuteczność systemów wentylacji budynków mieszkalnych kontrolowana jest jedynie poprzez pomiar pr... more Skuteczność systemów wentylacji budynków mieszkalnych kontrolowana jest jedynie poprzez pomiar prędkości strumienia powietrza w kanale wentylacyjnym, co nie gwarantuje odpowiedniej kontroli jakości powietrza. W pracy przedstawiono wyniki badań skuteczności wentylacji naturalnej wielorodzinnych budynków mieszkalnych, stanowiącej najczęściej spotykane rozwiązanie w budynkach mieszkalnych w Polsce. Szczególną uwagę zwrócono na wentylację pomieszczenia sypialni, jako pomieszczenia, w którym spędza się około 1/3 czasu w ciągu dnia. Badano wpływ skuteczności systemu wentylacji na podstawowe parametry charakteryzujące jakość powietrza, tj. stężenie ditlenku węgla, wilgotność względną oraz temperaturę. Wyniki przeprowadzonych badań wykazały, iż w przypadku sypialni w lokalach mieszkalnych wielorodzinnych budynków mieszkalnych systemy wentylacji naturalnej nie spełniają swojej funkcji i powinny zostać zastąpione przez systemy wentylacji mechanicznej z odzyskiem ciepła.

Research paper thumbnail of The effectiveness of various types of ventilation on air quality in multi-family buildings

Ecological Chemistry and Engineering. A, 2017

Research paper thumbnail of Optimization of carbon dioxide concentration in the didactic rooms by the regulation of ventilation

Ecological Chemistry and Engineering. A, 2016

Poor ventilation of didactic rooms can interfere with students' ability to concentrate and even c... more Poor ventilation of didactic rooms can interfere with students' ability to concentrate and even cause them to suffer headaches. This is a significant issue as the ventilation systems of most lecture buildings in Poland do not provide proper air exchange. This paper presents findings of research on air parameters research in the didactic rooms of various sizes. Rooms for classes should ensure climatic comfort i.e. proper humidity and air temperature, physical and biological air quality, and low concentration of carbon dioxide. The research suggested that natural ventilation should not be used, and further research was done after the upgrading of ventilation systems and installation of exhaust fans. The coefficients of carbon dioxide emissions by one student depend on the number of people and size of the room were calculated. Designated coefficients will be used in the algorithm for determining the parameters of the fans in the ventilation system of the classrooms and lecture halls.

Research paper thumbnail of Badania parametrów jakości powietrza w salach dydaktycznych

Proceedings of ECOpole, 2016

Research paper thumbnail of Transport wilgoci w układzie trójfazowym: wilgotne ziarno zboża - sorbent - przestrzeń międzyziarnowa

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Inżynieria Środowiska, 2005

Research paper thumbnail of The potential of roofs in city centers to be used for photovoltaic micro-installations

IOP conference series, Oct 1, 2019

Currently in Poland, power engineering based on hard coal and lignite plays the dominant role. Th... more Currently in Poland, power engineering based on hard coal and lignite plays the dominant role. This significantly impedes the attainment of 15% share of energy produced from renewable sources by 2020 and has a negative impact on air quality in Poland. A solution to this unfavourable situation may be to develop renewable dispersed energy with particular emphasis on installations using photovoltaic. Strongly urbanized areas have high electricity demand, and at the same time low availability of areas where it is possible to locate renewable energy sources. In this study, the possibility of using roofs of buildings in city centres for the purpose of photovoltaic micro-installation was analysed. A case study was carried out for two selected districts of the city of Opole. Opole has sunshine conditions which are representative for Poland. The analysis of photovoltaic potential of roofs in urbanised areas was carried out using geographical information systems (GIS). The analysis showed a high photovoltaic potential of the two selected districts of Opole: the potential to generate locally almost 25% of the electrical energy required. The proposed method of determining the photovoltaic potential of roofs in city centres can be used in Polish conditions, as well as in Central Europe.

Research paper thumbnail of The green roofs for reduction in the load on rainwater drainage in highly urbanised areas

Environmental Science and Pollution Research, Feb 1, 2021

Rapid weather phenomena, particularly sudden and intense rainfall, have become a problem in urban... more Rapid weather phenomena, particularly sudden and intense rainfall, have become a problem in urban areas in recent years. During heavy rainfall, urban rainwater drainage systems are unable to discharge huge amounts of runoff into collecting reservoirs, which usually results in local flooding. This paper presents attempts to forecast a reduction in the load on the rainwater drainage system through the implementation of green roofs in a case study covering two selected districts of Opole (Poland)-the Old Town and the City Centre. Model tests of extensive and intensive roofs were carried out, in order to determine the reduction of rainwater runoff from the roof surface for the site under study. The potential of the roofs of the buildings to make a green roof was also determined using geographical information systems (GIS), for a case study of two central districts of Opole. It proposed a methodology to determine the rainwater drainage system load reduction by making green roofs. The analyses carried out lead to the conclusion that, in the districts selected for the study, the execution of green roofs on 25% of the of buildings with the potential to implement this type of roof solution could reduce the load on the rain water system by a degree that protects the city area from local flooding.

Research paper thumbnail of The Impact of Green Roofs on the Parameters of the Environment in Urban Areas—Review

Atmosphere, Dec 7, 2019

This study presents the results of a review of publications conducted by researchers in a variety... more This study presents the results of a review of publications conducted by researchers in a variety of climates on the implementation of 'green roofs' and their impact on the urban environment. Features of green roofs in urban areas have been characterized by a particular emphasis on: Filtration of air pollutants and oxygen production, reduction of rainwater volume discharged from roof surfaces, reduction of so-called 'urban heat islands', as well as improvements to roof surface insulation (including noise reduction properties). The review of the publications confirmed the necessity to conduct research to determine the coefficients of the impact of green roofs on the environment in the city centers of Central and Eastern Europe. The results presented by different authors (most often based on a single case study) differ significantly from each other, which does not allow us to choose universal coefficients for all the parameters of the green roof's impact on the environment. The work also includes analysis of structural recommendations for the future model green roof study, which will enable pilot research into the influence of green roofs on the environment in urban agglomerations and proposes different kinds of plants for different kinds of roofs, respectively.

Research paper thumbnail of Air pollution in European countries and life expectancy—modelling with the use of neural network

Air Quality, Atmosphere & Health, Oct 30, 2019

The present paper discusses a novel methodology based on neural network to determine air pollutan... more The present paper discusses a novel methodology based on neural network to determine air pollutants' correlation with life expectancy in European countries. The models were developed using historical data from the period 1992-2016, for a set of 20 European countries. The subject of the analysis included the input variables of the following air pollutants: sulphur oxides, nitrogen oxides, carbon monoxide, particulate matters, polycyclic aromatic hydrocarbons and non-methane volatile organic compounds. Our main findings indicate that all the variables significantly affect life expectancy. Sensitivity of constructed neural networks to pollutants proved to be particularly important in the case of changes in the value of particulate matters, sulphur oxides and non-methane volatile organic compounds. The most frequent association was found for fine particle. Modelled courses of changes in the variable under study coincide with the actual data, which confirms that the proposed models generalize acquired knowledge well.

Research paper thumbnail of Zastosowanie funkcji harmonicznej do analizy transportu wilgoci w układzie ziarno wilgotne – sorbent o podwyższonej temperaturze

Inżynieria Rolnicza, 2004

Research paper thumbnail of Using overdried grain as a natural sorbent in processes of cereal grain conservation and storage

Research paper thumbnail of Energy efficiency improvement in hospital buildings, based on the example of a selected type of hospital facility in Poland

IOP conference series, Oct 1, 2019

Energy demand in hospitals is of highly diverse nature: heat energy, cool energy and electricity.... more Energy demand in hospitals is of highly diverse nature: heat energy, cool energy and electricity. A guarantee of energy supply is required to ensure continuity of medical procedures. Taking care of the lowest possible costs of hospital operations, special attention should be paid to energy efficiency of the installations used in the hospital buildings. The paper presents an analysis of energy demand for heating, cooling, ventilation and lighting in an example hospital in Poland. The selected object was considered a reference as it was built according to a repetitive construction plan, according to which several dozen other hospitals were built in Poland. On the basis of data from 2013-2017, a summary of heat, cold and electricity demand for the hospital in its current technical condition was prepared. Concepts of technical and economic modernization of systems using energy in the analysed facility were proposed, assuming different ranges of changes for individual installations in the hospital. After the analysis of various modernization options, a project was proposed combining the use of heat pumps, photovoltaic installations and generation of heat and cooling in trigeneration, all of which allowed to reduce the costs of operation of the hospital energy systems by about 31%.

Research paper thumbnail of Optimization of ventilation system in the open office space

MATEC web of conferences, 2018

The paper presents the results of study into the air parameters in open space offices. As office ... more The paper presents the results of study into the air parameters in open space offices. As office workers spend about 1/3 of the day in such spaces, it is important to provide them with the right climate comfort, and that is determined, most importantly, by: the temperature and humidity of the air, quality of the air, and the concentration of CO2. Two objects of study were selected-both of them open space facilities, each with a different intensity of use. In the course of study, measurements were taken on the basis of which the distributions of temperature, humidity, and concentrations of CO2 in the entire volume of the space were determined. Also the empirical coefficients of CO2 emission by the office workers were marked out, dependent on the volume of the working area and the number of people using it. The coefficients were developed at optimal working parameters of fans in the ventilation system; the criterion for optimization being heat loss in the office caused by discharge of the used heated air into the atmosphere. The results of the study have also shown that the use of personal ventilation (PV) with an installed recuperator for heat recovery from the used air discharged from the room significantly improves the energy efficiency of an open space office building.

Research paper thumbnail of Agricultural Biogas Plant as a Thermodynamic System: A Study of Efficiency in the Transformation from Primary to Secondary Energy

Using a wide range of organic substrates in the methane fermentation process enables efficient bi... more Using a wide range of organic substrates in the methane fermentation process enables efficient biogas production. Nonetheless, in many cases, the efficiency of electricity generation in biogas plant cogeneration systems is much lower than expected, close to the calorific value of the applied feedstock. This paper analyses energy conversion efficiency in a 1 MWel agricultural biogas plant fed with corn silage or vegetable waste and pig slurry as a feedstock dilution agent, depending on the season and availability. Biomass conversion studies were carried out for 12 months, during which substrate samples were taken once a month. The total primary energy in substrates was estimated in laboratory conditions by measuring the heat of combustion in a ballistic bomb calorimeter (17,760 MWh·year-1), and in the case of pig slurry, biochemical methane potential (BMP, (201.88±3.21 m3·Mg VS-1). Further, the substrates were analysed in terms of their chemical composition — from protein, sugar and ...

Research paper thumbnail of Spatial Succession for Degradation of Solid Multicomponent Food Waste and Purification of Toxic Leachate with the Obtaining of Biohydrogen and Biomethane

Energies, 2022

A huge amount of organic waste is generated annually around the globe. The main sources of solid ... more A huge amount of organic waste is generated annually around the globe. The main sources of solid and liquid organic waste are municipalities and canning and food industries. Most of it is disposed of in an environmentally unfriendly way since none of the modern recycling technologies can cope with such immense volumes of waste. Microbiological and biotechnological approaches are extremely promising for solving this environmental problem. Moreover, organic waste can serve as the substrate to obtain alternative energy, such as biohydrogen (H2) and biomethane (CH4). This work aimed to design and test new technology for the degradation of food waste, coupled with biohydrogen and biomethane production, as well as liquid organic leachate purification. The effective treatment of waste was achieved due to the application of the specific granular microbial preparation. Microbiological and physicochemical methods were used to measure the fermentation parameters. As a result, a four-module dir...

Research paper thumbnail of Wykorzystanie przesuszonego ziarna jako naturalnego sorbentu w procesach konserwacji i przechowalnictwa zbóż

Research paper thumbnail of Modelling the Interaction between Air Pollutant Emissions and Their Key Sources in Poland

Energies, 2021

The main purpose of this study is to investigate the relationships between key sources of air pol... more The main purpose of this study is to investigate the relationships between key sources of air pollutant emissions (sources of energy production, factories which are particularly harmful to the environment, the fleets of cars, environmental protection expenditure) and the main environmental air pollution (SO2, NOx, CO and PM) in Poland. Models based on MLP neural networks were used as predictive models. Global sensitivity analysis was used to demonstrate the significant impact of individual network input variables on the output variable. To verify the effectiveness of the models created, the actual data were compared with the data obtained through modelling. Projected courses of changes in the variables under study correspond with the real data, which confirms that the proposed models generalize acquired knowledge well. The high MLP network quality parameters of 0.99–0.85 indicate that the network generalizes the acquired knowledge accurately. The sensitivity analysis for NOx, CO and...

Research paper thumbnail of Optimisation of Heat Loss through Ventilation for Residential Buildings

Atmosphere, 2018

This study presents the results of research on heat loss from various types of residential buildi... more This study presents the results of research on heat loss from various types of residential buildings through ventilation systems. Experimental research was done to analyse the effectiveness of ventilation systems of different types and determine the parameters of air discharged via the ventilation ducts. A model of heat loss from the discharge of exhaust air outside through air ducts has since been developed. Experiments were conducted on three experimental systems of building ventilation: gravitational, mechanical, and supply-exhaust ventilation systems with heat recovery. The proposed model dependencies were used to chart the daily fluctuations of the optimum multiplicity of air exchange for precise control of the parameters of mechanical ventilation systems in residential buildings. This study proves that natural ventilation in residential buildings fulfils its function only by increasing the air flow into the building, and that this incurs significant heat loss from buildings during the heating season.

Research paper thumbnail of Modeling the Consumption of Main Fossil Fuels in Greenhouse Gas Emissions in European Countries, Considering Gross Domestic Product and Population

Energies, Dec 3, 2023

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Research paper thumbnail of Modelowanie strat energii z budynku inwentarskiego

A-koncepcja B-zestawienie danych C-analizy statystyczne D-interpretacja wyników E-przygotowanie m... more A-koncepcja B-zestawienie danych C-analizy statystyczne D-interpretacja wyników E-przygotowanie maszynopisu F-przegląd literatury Modelowanie strat energii z budynku inwentarskiego Dariusz SUSZANOWICZ ABCDE Uniwersytet Opolski, Samodzielna Katedra Inżynierii Procesowej Streszczenie W pracy przedstawiono sporządzony model matematyczny strat energii z budynku inwentarskiego. Model taki umożliwi określenie wymaganych parametrów termicznych przegród, systemów ogrzewania wykorzystujących odnawialne źródła energii oraz systemów wentylacji w budynkach inwentarskich, ze szczególnym uwzględnieniem chlewni. Wyniki symulacji, wykonanych za pomocą przygotowanego modelu, zweryfikowano, wyznaczając rzeczywiste zapotrzebowanie na energię dwóch istniejących chlewni. Model strat energii w sposób zadowalający odzwierciedla zapotrzebowanie na energię końcową. W przypadku projektowania budynku pozwala określić przyszłe zapotrzebowanie na energię, a w przypadku budynków istniejących umożliwia planowanie efektów przygotowywanej termomodernizacji. Słowa kluczowe: budownictwo wiejskie, modelowanie, energochłonność, straty energii, wewnętrzne zyski ciepła Wstęp Zgodnie ze zmianami ustawy Prawo budowlane od początku 2009 r. wprowadzono obowiązek sporządzania świadectw charakterystyki energetycznej budynków mieszkalnych. Ocena zapotrzebowania na energię dotyczy wszystkich budynków, w których znajdują się instalacje ogrzewania bądź chłodzenia. Do budynków takich należą również budynki wiejskie, ze szczególnym uwzględnieniem budynków inwentarskich. Wyznaczono nowe trendy projektowania budynków z uwzględnieniem zapotrzebowania na nieodnawialną energię pierwotną oraz prowadzenia prac termomodernizacyjnych budynków. Precyzyjne wyznaczenie zapotrzebowania na energię do celów ogrzewania, wentylacji, przygotowania ciepłej wody użytkowej oraz oświetlenia wbudowanego umożliwia określenie zmian mikroklimatu w pomieszczeniach inwentarskich w każdym okresie roku, z uwzględnieniem m.in. wpływu akumulacji cieplnej w przegrodach oraz w gruncie pod posadzką.

Research paper thumbnail of Badania skuteczności wentylacji pomieszczeń sypialni w wielorodzinnych budynkach mieszkalnych

Proceedings of ECOpole, 2017

Skuteczność systemów wentylacji budynków mieszkalnych kontrolowana jest jedynie poprzez pomiar pr... more Skuteczność systemów wentylacji budynków mieszkalnych kontrolowana jest jedynie poprzez pomiar prędkości strumienia powietrza w kanale wentylacyjnym, co nie gwarantuje odpowiedniej kontroli jakości powietrza. W pracy przedstawiono wyniki badań skuteczności wentylacji naturalnej wielorodzinnych budynków mieszkalnych, stanowiącej najczęściej spotykane rozwiązanie w budynkach mieszkalnych w Polsce. Szczególną uwagę zwrócono na wentylację pomieszczenia sypialni, jako pomieszczenia, w którym spędza się około 1/3 czasu w ciągu dnia. Badano wpływ skuteczności systemu wentylacji na podstawowe parametry charakteryzujące jakość powietrza, tj. stężenie ditlenku węgla, wilgotność względną oraz temperaturę. Wyniki przeprowadzonych badań wykazały, iż w przypadku sypialni w lokalach mieszkalnych wielorodzinnych budynków mieszkalnych systemy wentylacji naturalnej nie spełniają swojej funkcji i powinny zostać zastąpione przez systemy wentylacji mechanicznej z odzyskiem ciepła.

Research paper thumbnail of The effectiveness of various types of ventilation on air quality in multi-family buildings

Ecological Chemistry and Engineering. A, 2017

Research paper thumbnail of Optimization of carbon dioxide concentration in the didactic rooms by the regulation of ventilation

Ecological Chemistry and Engineering. A, 2016

Poor ventilation of didactic rooms can interfere with students' ability to concentrate and even c... more Poor ventilation of didactic rooms can interfere with students' ability to concentrate and even cause them to suffer headaches. This is a significant issue as the ventilation systems of most lecture buildings in Poland do not provide proper air exchange. This paper presents findings of research on air parameters research in the didactic rooms of various sizes. Rooms for classes should ensure climatic comfort i.e. proper humidity and air temperature, physical and biological air quality, and low concentration of carbon dioxide. The research suggested that natural ventilation should not be used, and further research was done after the upgrading of ventilation systems and installation of exhaust fans. The coefficients of carbon dioxide emissions by one student depend on the number of people and size of the room were calculated. Designated coefficients will be used in the algorithm for determining the parameters of the fans in the ventilation system of the classrooms and lecture halls.

Research paper thumbnail of Badania parametrów jakości powietrza w salach dydaktycznych

Proceedings of ECOpole, 2016

Research paper thumbnail of Transport wilgoci w układzie trójfazowym: wilgotne ziarno zboża - sorbent - przestrzeń międzyziarnowa

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Inżynieria Środowiska, 2005

Research paper thumbnail of The potential of roofs in city centers to be used for photovoltaic micro-installations

IOP conference series, Oct 1, 2019

Currently in Poland, power engineering based on hard coal and lignite plays the dominant role. Th... more Currently in Poland, power engineering based on hard coal and lignite plays the dominant role. This significantly impedes the attainment of 15% share of energy produced from renewable sources by 2020 and has a negative impact on air quality in Poland. A solution to this unfavourable situation may be to develop renewable dispersed energy with particular emphasis on installations using photovoltaic. Strongly urbanized areas have high electricity demand, and at the same time low availability of areas where it is possible to locate renewable energy sources. In this study, the possibility of using roofs of buildings in city centres for the purpose of photovoltaic micro-installation was analysed. A case study was carried out for two selected districts of the city of Opole. Opole has sunshine conditions which are representative for Poland. The analysis of photovoltaic potential of roofs in urbanised areas was carried out using geographical information systems (GIS). The analysis showed a high photovoltaic potential of the two selected districts of Opole: the potential to generate locally almost 25% of the electrical energy required. The proposed method of determining the photovoltaic potential of roofs in city centres can be used in Polish conditions, as well as in Central Europe.

Research paper thumbnail of The green roofs for reduction in the load on rainwater drainage in highly urbanised areas

Environmental Science and Pollution Research, Feb 1, 2021

Rapid weather phenomena, particularly sudden and intense rainfall, have become a problem in urban... more Rapid weather phenomena, particularly sudden and intense rainfall, have become a problem in urban areas in recent years. During heavy rainfall, urban rainwater drainage systems are unable to discharge huge amounts of runoff into collecting reservoirs, which usually results in local flooding. This paper presents attempts to forecast a reduction in the load on the rainwater drainage system through the implementation of green roofs in a case study covering two selected districts of Opole (Poland)-the Old Town and the City Centre. Model tests of extensive and intensive roofs were carried out, in order to determine the reduction of rainwater runoff from the roof surface for the site under study. The potential of the roofs of the buildings to make a green roof was also determined using geographical information systems (GIS), for a case study of two central districts of Opole. It proposed a methodology to determine the rainwater drainage system load reduction by making green roofs. The analyses carried out lead to the conclusion that, in the districts selected for the study, the execution of green roofs on 25% of the of buildings with the potential to implement this type of roof solution could reduce the load on the rain water system by a degree that protects the city area from local flooding.

Research paper thumbnail of The Impact of Green Roofs on the Parameters of the Environment in Urban Areas—Review

Atmosphere, Dec 7, 2019

This study presents the results of a review of publications conducted by researchers in a variety... more This study presents the results of a review of publications conducted by researchers in a variety of climates on the implementation of 'green roofs' and their impact on the urban environment. Features of green roofs in urban areas have been characterized by a particular emphasis on: Filtration of air pollutants and oxygen production, reduction of rainwater volume discharged from roof surfaces, reduction of so-called 'urban heat islands', as well as improvements to roof surface insulation (including noise reduction properties). The review of the publications confirmed the necessity to conduct research to determine the coefficients of the impact of green roofs on the environment in the city centers of Central and Eastern Europe. The results presented by different authors (most often based on a single case study) differ significantly from each other, which does not allow us to choose universal coefficients for all the parameters of the green roof's impact on the environment. The work also includes analysis of structural recommendations for the future model green roof study, which will enable pilot research into the influence of green roofs on the environment in urban agglomerations and proposes different kinds of plants for different kinds of roofs, respectively.

Research paper thumbnail of Air pollution in European countries and life expectancy—modelling with the use of neural network

Air Quality, Atmosphere & Health, Oct 30, 2019

The present paper discusses a novel methodology based on neural network to determine air pollutan... more The present paper discusses a novel methodology based on neural network to determine air pollutants' correlation with life expectancy in European countries. The models were developed using historical data from the period 1992-2016, for a set of 20 European countries. The subject of the analysis included the input variables of the following air pollutants: sulphur oxides, nitrogen oxides, carbon monoxide, particulate matters, polycyclic aromatic hydrocarbons and non-methane volatile organic compounds. Our main findings indicate that all the variables significantly affect life expectancy. Sensitivity of constructed neural networks to pollutants proved to be particularly important in the case of changes in the value of particulate matters, sulphur oxides and non-methane volatile organic compounds. The most frequent association was found for fine particle. Modelled courses of changes in the variable under study coincide with the actual data, which confirms that the proposed models generalize acquired knowledge well.

Research paper thumbnail of Zastosowanie funkcji harmonicznej do analizy transportu wilgoci w układzie ziarno wilgotne – sorbent o podwyższonej temperaturze

Inżynieria Rolnicza, 2004

Research paper thumbnail of Using overdried grain as a natural sorbent in processes of cereal grain conservation and storage

Research paper thumbnail of Energy efficiency improvement in hospital buildings, based on the example of a selected type of hospital facility in Poland

IOP conference series, Oct 1, 2019

Energy demand in hospitals is of highly diverse nature: heat energy, cool energy and electricity.... more Energy demand in hospitals is of highly diverse nature: heat energy, cool energy and electricity. A guarantee of energy supply is required to ensure continuity of medical procedures. Taking care of the lowest possible costs of hospital operations, special attention should be paid to energy efficiency of the installations used in the hospital buildings. The paper presents an analysis of energy demand for heating, cooling, ventilation and lighting in an example hospital in Poland. The selected object was considered a reference as it was built according to a repetitive construction plan, according to which several dozen other hospitals were built in Poland. On the basis of data from 2013-2017, a summary of heat, cold and electricity demand for the hospital in its current technical condition was prepared. Concepts of technical and economic modernization of systems using energy in the analysed facility were proposed, assuming different ranges of changes for individual installations in the hospital. After the analysis of various modernization options, a project was proposed combining the use of heat pumps, photovoltaic installations and generation of heat and cooling in trigeneration, all of which allowed to reduce the costs of operation of the hospital energy systems by about 31%.

Research paper thumbnail of Optimization of ventilation system in the open office space

MATEC web of conferences, 2018

The paper presents the results of study into the air parameters in open space offices. As office ... more The paper presents the results of study into the air parameters in open space offices. As office workers spend about 1/3 of the day in such spaces, it is important to provide them with the right climate comfort, and that is determined, most importantly, by: the temperature and humidity of the air, quality of the air, and the concentration of CO2. Two objects of study were selected-both of them open space facilities, each with a different intensity of use. In the course of study, measurements were taken on the basis of which the distributions of temperature, humidity, and concentrations of CO2 in the entire volume of the space were determined. Also the empirical coefficients of CO2 emission by the office workers were marked out, dependent on the volume of the working area and the number of people using it. The coefficients were developed at optimal working parameters of fans in the ventilation system; the criterion for optimization being heat loss in the office caused by discharge of the used heated air into the atmosphere. The results of the study have also shown that the use of personal ventilation (PV) with an installed recuperator for heat recovery from the used air discharged from the room significantly improves the energy efficiency of an open space office building.

Research paper thumbnail of Agricultural Biogas Plant as a Thermodynamic System: A Study of Efficiency in the Transformation from Primary to Secondary Energy

Using a wide range of organic substrates in the methane fermentation process enables efficient bi... more Using a wide range of organic substrates in the methane fermentation process enables efficient biogas production. Nonetheless, in many cases, the efficiency of electricity generation in biogas plant cogeneration systems is much lower than expected, close to the calorific value of the applied feedstock. This paper analyses energy conversion efficiency in a 1 MWel agricultural biogas plant fed with corn silage or vegetable waste and pig slurry as a feedstock dilution agent, depending on the season and availability. Biomass conversion studies were carried out for 12 months, during which substrate samples were taken once a month. The total primary energy in substrates was estimated in laboratory conditions by measuring the heat of combustion in a ballistic bomb calorimeter (17,760 MWh·year-1), and in the case of pig slurry, biochemical methane potential (BMP, (201.88±3.21 m3·Mg VS-1). Further, the substrates were analysed in terms of their chemical composition — from protein, sugar and ...

Research paper thumbnail of Spatial Succession for Degradation of Solid Multicomponent Food Waste and Purification of Toxic Leachate with the Obtaining of Biohydrogen and Biomethane

Energies, 2022

A huge amount of organic waste is generated annually around the globe. The main sources of solid ... more A huge amount of organic waste is generated annually around the globe. The main sources of solid and liquid organic waste are municipalities and canning and food industries. Most of it is disposed of in an environmentally unfriendly way since none of the modern recycling technologies can cope with such immense volumes of waste. Microbiological and biotechnological approaches are extremely promising for solving this environmental problem. Moreover, organic waste can serve as the substrate to obtain alternative energy, such as biohydrogen (H2) and biomethane (CH4). This work aimed to design and test new technology for the degradation of food waste, coupled with biohydrogen and biomethane production, as well as liquid organic leachate purification. The effective treatment of waste was achieved due to the application of the specific granular microbial preparation. Microbiological and physicochemical methods were used to measure the fermentation parameters. As a result, a four-module dir...

Research paper thumbnail of Wykorzystanie przesuszonego ziarna jako naturalnego sorbentu w procesach konserwacji i przechowalnictwa zbóż

Research paper thumbnail of Modelling the Interaction between Air Pollutant Emissions and Their Key Sources in Poland

Energies, 2021

The main purpose of this study is to investigate the relationships between key sources of air pol... more The main purpose of this study is to investigate the relationships between key sources of air pollutant emissions (sources of energy production, factories which are particularly harmful to the environment, the fleets of cars, environmental protection expenditure) and the main environmental air pollution (SO2, NOx, CO and PM) in Poland. Models based on MLP neural networks were used as predictive models. Global sensitivity analysis was used to demonstrate the significant impact of individual network input variables on the output variable. To verify the effectiveness of the models created, the actual data were compared with the data obtained through modelling. Projected courses of changes in the variables under study correspond with the real data, which confirms that the proposed models generalize acquired knowledge well. The high MLP network quality parameters of 0.99–0.85 indicate that the network generalizes the acquired knowledge accurately. The sensitivity analysis for NOx, CO and...

Research paper thumbnail of Optimisation of Heat Loss through Ventilation for Residential Buildings

Atmosphere, 2018

This study presents the results of research on heat loss from various types of residential buildi... more This study presents the results of research on heat loss from various types of residential buildings through ventilation systems. Experimental research was done to analyse the effectiveness of ventilation systems of different types and determine the parameters of air discharged via the ventilation ducts. A model of heat loss from the discharge of exhaust air outside through air ducts has since been developed. Experiments were conducted on three experimental systems of building ventilation: gravitational, mechanical, and supply-exhaust ventilation systems with heat recovery. The proposed model dependencies were used to chart the daily fluctuations of the optimum multiplicity of air exchange for precise control of the parameters of mechanical ventilation systems in residential buildings. This study proves that natural ventilation in residential buildings fulfils its function only by increasing the air flow into the building, and that this incurs significant heat loss from buildings during the heating season.