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Natalia Fidorów-Kaprawy
Faculty of Environmental Engineering, Wroclaw University of Science and Technology, Norwida St. 4/6, 50-373, Wrocław, Poland

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Journal article
Published: 30 May 2020 in Resources
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The renewable and waste heat sources implemented for the preparation of domestic hot water (DHW) allow for energy conservation and environment protection along with resource savings and economic benefits. The solutions, including non-conventional sources, are especially demanded in large halls in which energy and water consumption are crucial for maintenance costs. In this article, energy analysis of a DHW preparation system for workers’ hygienic purposes in a industrial hall was performed. The DHW preparation system consisted of three sources: a flue gases heat exchanger as the waste heat source, solar collectors as the renewable heat source and a gas boiler as the conventional source. In the analysis, data of a variable-temperature supply of water and hourly water consumption data from the measurements in the industrial hall, located in Poland, were applied. The results for all of the 8760 h of one year were examined. The analysis outcomes show that implementation of non-conventional sources can supply 81.4% of energy needed for DHW preparation, avoiding a lot of running costs; just 18.6% of heat demand had to be obtained from a gas boiler. The analysis also confirms that the system may operate correctly when the appropriate device size is applied, along with a proper control strategy that avoids overheating water and uses alternative sources.

ACS Style

Edyta Dudkiewicz; Natalia Fidorów-Kaprawy. Hybrid Domestic Hot Water System Performance in Industrial Hall. Resources 2020, 9, 1 .

AMA Style

Edyta Dudkiewicz, Natalia Fidorów-Kaprawy. Hybrid Domestic Hot Water System Performance in Industrial Hall. Resources. 2020; 9 (6):1.

Chicago/Turabian Style

Edyta Dudkiewicz; Natalia Fidorów-Kaprawy. 2020. "Hybrid Domestic Hot Water System Performance in Industrial Hall." Resources 9, no. 6: 1.

Journal article
Published: 21 May 2020 in Buildings and Cities
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ACS Style

Magdalena Baborska-Narozny; Malgorzata Szulgowska-Zgrzywa; Martyna Mokrzecka; Agnieszka Chmielewska; Natalia Fidorow-Kaprawy; Ewelina Stefanowicz; Krzysztof Piechurski; Marta Laska. Climate justice: air quality and transitions from solid fuel heating. Buildings and Cities 2020, 1, 120 -140.

AMA Style

Magdalena Baborska-Narozny, Malgorzata Szulgowska-Zgrzywa, Martyna Mokrzecka, Agnieszka Chmielewska, Natalia Fidorow-Kaprawy, Ewelina Stefanowicz, Krzysztof Piechurski, Marta Laska. Climate justice: air quality and transitions from solid fuel heating. Buildings and Cities. 2020; 1 (1):120-140.

Chicago/Turabian Style

Magdalena Baborska-Narozny; Malgorzata Szulgowska-Zgrzywa; Martyna Mokrzecka; Agnieszka Chmielewska; Natalia Fidorow-Kaprawy; Ewelina Stefanowicz; Krzysztof Piechurski; Marta Laska. 2020. "Climate justice: air quality and transitions from solid fuel heating." Buildings and Cities 1, no. 1: 120-140.

Conference paper
Published: 03 July 2018 in E3S Web of Conferences
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In the paper the analysis of the operation of ground-source heat pump with various heat-carrier fluids circulating in boreholes was made. The authors considered several aspects related to the heat-carrier fluid selection (freezing point, heat transfer capabilities, toxicity, pumping costs). The lower heat source analysis had been performed in Earth Energy Designer (EED) software. The analyses’ results reliability was assured by the ground-source model calibration made basing on the measurement data from on-site test stand. Analyses were performed for four heat-carrier fluids (two kinds of propylene glycol solutions – standard and with lower viscosity, water and nanofluid (water + CuO)) and in four variants of thermal load (design and actual loads both with and without active regeneration). It had been concluded that temperature of none of the fluids would drop under 0°C if the system was operated under actual thermal load. For design thermal load there would be a risk of the water freezing but it may be minimized by active regeneration or lower heat source enlargement by 20% (in analyzed case) each rising the mean fluid temperature by around 1.0-1.5 K. The use of other fluid in place of standard propylene glycol solution will give pumping energy savings.

ACS Style

Ewelina Stefanowicz; Małgorzata Szulgowska-Zgrzywa; Natalia Fidorów-Kaprawy. Analysis of the ground-source heat pump operation with various heat-carrier fluids in the lower heat source. E3S Web of Conferences 2018, 44, 00168 .

AMA Style

Ewelina Stefanowicz, Małgorzata Szulgowska-Zgrzywa, Natalia Fidorów-Kaprawy. Analysis of the ground-source heat pump operation with various heat-carrier fluids in the lower heat source. E3S Web of Conferences. 2018; 44 ():00168.

Chicago/Turabian Style

Ewelina Stefanowicz; Małgorzata Szulgowska-Zgrzywa; Natalia Fidorów-Kaprawy. 2018. "Analysis of the ground-source heat pump operation with various heat-carrier fluids in the lower heat source." E3S Web of Conferences 44, no. : 00168.

Journal article
Published: 01 December 2017 in Applied Thermal Engineering
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ACS Style

Małgorzata Szulgowska-Zgrzywa; Natalia Fidorów-Kaprawy. Performance analysis of a brine-to-water heat pump and of its boreholes’ temperature change during three years of operation. Applied Thermal Engineering 2017, 127, 233 -244.

AMA Style

Małgorzata Szulgowska-Zgrzywa, Natalia Fidorów-Kaprawy. Performance analysis of a brine-to-water heat pump and of its boreholes’ temperature change during three years of operation. Applied Thermal Engineering. 2017; 127 ():233-244.

Chicago/Turabian Style

Małgorzata Szulgowska-Zgrzywa; Natalia Fidorów-Kaprawy. 2017. "Performance analysis of a brine-to-water heat pump and of its boreholes’ temperature change during three years of operation." Applied Thermal Engineering 127, no. : 233-244.

Conference paper
Published: 07 November 2017 in E3S Web of Conferences
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The article discusses the principles and the problems of obtaining an accurate data input for the design of brine-to-water heat pump’s vertical exchangers. Currently, the most accurate method is the thermal response test (TRT). Unfortunately, the test procedure has its limitations and the quality of the results depends on many factors that cannot be fully controlled during the test. As an illustration of the problems, the results of the TRT were presented. The test was executed on the vertical boreholes (one actively regenerated and one not actively regenerated during the summer) which are parts of the operating heat pump system. The test results were compared to the data from the device’s operation, in particular with the measurements of the undisturbed ground temperature profiles and the actual unit energy gains from the boreholes. The level of difference between the results of the test and the data from the operation of the boreholes under the real load and the threats concerning the boreholes overload were shown. Additionally the performance differences between the actively regenerated and not actively regenerated boreholes have been emphasised.

ACS Style

Natalia Fidorów-Kaprawy; Ewelina Stefanowicz; Wojciech Mazurek; Małgorzata Szulgowska-Zgrzywa; Anna Bryszewska-Mazurek. The analysis of the differences between the results of the thermal response test and the data from the operation of the brine-to-water heat pump’s vertical exchanger. E3S Web of Conferences 2017, 22, 00045 .

AMA Style

Natalia Fidorów-Kaprawy, Ewelina Stefanowicz, Wojciech Mazurek, Małgorzata Szulgowska-Zgrzywa, Anna Bryszewska-Mazurek. The analysis of the differences between the results of the thermal response test and the data from the operation of the brine-to-water heat pump’s vertical exchanger. E3S Web of Conferences. 2017; 22 ():00045.

Chicago/Turabian Style

Natalia Fidorów-Kaprawy; Ewelina Stefanowicz; Wojciech Mazurek; Małgorzata Szulgowska-Zgrzywa; Anna Bryszewska-Mazurek. 2017. "The analysis of the differences between the results of the thermal response test and the data from the operation of the brine-to-water heat pump’s vertical exchanger." E3S Web of Conferences 22, no. : 00045.

Conference paper
Published: 07 November 2017 in E3S Web of Conferences
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The systems using solar energy, popular in Poland, can be used to supply hot water for the installation used by employees of industrial halls. In manufacturing plants, employing a large number of people, the demand for hot water is practically constant throughout the year and is characterized by periodic use at the end of each work shift. Dynamics of the hot water consumption depends on the number of shifts as well as working days and holidays. Additionally the maximum hot tap water demand occurs in the whole period of installation operation. In polish climatic conditions the solar collectors’ systems have the largest capacity in the summer, while in winter they need to be assisted. Beside that the supply of renewable energy is uneven and depends on weather conditions. In the paper the one-hour step analysis concerning the dependence of the load pattern of the hot tap water preparation system on the energy yield from solar collectors had been performed.

ACS Style

Natalia Fidorów-Kaprawyl; Edyta Dudkiewicz. The impact of the hot tap water load pattern in the industrial hall on the energy yield from solar collectors. E3S Web of Conferences 2017, 22, 00044 .

AMA Style

Natalia Fidorów-Kaprawyl, Edyta Dudkiewicz. The impact of the hot tap water load pattern in the industrial hall on the energy yield from solar collectors. E3S Web of Conferences. 2017; 22 ():00044.

Chicago/Turabian Style

Natalia Fidorów-Kaprawyl; Edyta Dudkiewicz. 2017. "The impact of the hot tap water load pattern in the industrial hall on the energy yield from solar collectors." E3S Web of Conferences 22, no. : 00044.

Conference paper
Published: 24 May 2017 in E3S Web of Conferences
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In the paper the simulations of the low enthalpy energy source for brine-to-water heat pump using EED software had been presented. Authors indicated the influence of the ground parameters’ assumptions on the low enthalpy heat pump’s energy source simulation’s results. Based on the real borehole geological profile and data available in literature, the ground thermal conductivity coefficients have been calculated making different assumptions concerning the ground thermal properties. The calculated ground thermal conductivity coefficients along with the calculated source sizes, heat pump parameters and the heated building thermal performance served as the input data for the simulation software. The outcomes of the analyses include the temperatures of brine entering the heat pump as well as the brine initial temperature. Outcomes served for the low enthalpy energy source performance evaluation.

ACS Style

Ewelina Stefanowicz; Natalia Fidorόw-Kaprawy. The influence of the ground parameters’ assumptions on the low enthalpy heat pump’s energy source simulation’s results. E3S Web of Conferences 2017, 17, 87 .

AMA Style

Ewelina Stefanowicz, Natalia Fidorόw-Kaprawy. The influence of the ground parameters’ assumptions on the low enthalpy heat pump’s energy source simulation’s results. E3S Web of Conferences. 2017; 17 ():87.

Chicago/Turabian Style

Ewelina Stefanowicz; Natalia Fidorόw-Kaprawy. 2017. "The influence of the ground parameters’ assumptions on the low enthalpy heat pump’s energy source simulation’s results." E3S Web of Conferences 17, no. : 87.

Journal article
Published: 01 May 2017 in Energy
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ACS Style

Edyta Dudkiewicz; Natalia Fidorów-Kaprawy. The energy analysis of a hybrid hot tap water preparation system based on renewable and waste sources. Energy 2017, 127, 198 -208.

AMA Style

Edyta Dudkiewicz, Natalia Fidorów-Kaprawy. The energy analysis of a hybrid hot tap water preparation system based on renewable and waste sources. Energy. 2017; 127 ():198-208.

Chicago/Turabian Style

Edyta Dudkiewicz; Natalia Fidorów-Kaprawy. 2017. "The energy analysis of a hybrid hot tap water preparation system based on renewable and waste sources." Energy 127, no. : 198-208.

Journal article
Published: 01 August 2016 in Energy
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ACS Style

J. Danielewicz; B. Śniechowska; M.A. Sayegh; Natalia Fidorów-Kaprawy; H. Jouhara. Three-dimensional numerical model of heat losses from district heating network pre-insulated pipes buried in the ground. Energy 2016, 108, 172 -184.

AMA Style

J. Danielewicz, B. Śniechowska, M.A. Sayegh, Natalia Fidorów-Kaprawy, H. Jouhara. Three-dimensional numerical model of heat losses from district heating network pre-insulated pipes buried in the ground. Energy. 2016; 108 ():172-184.

Chicago/Turabian Style

J. Danielewicz; B. Śniechowska; M.A. Sayegh; Natalia Fidorów-Kaprawy; H. Jouhara. 2016. "Three-dimensional numerical model of heat losses from district heating network pre-insulated pipes buried in the ground." Energy 108, no. : 172-184.

Journal article
Published: 01 May 2015 in Applied Thermal Engineering
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ACS Style

Natalia Fidorów-Kaprawy; Małgorzata Szulgowska-Zgrzywa. The influence of the ground coupled heat pump's labor on the ground temperature in the boreholes – Study based on experimental data. Applied Thermal Engineering 2015, 82, 237 -245.

AMA Style

Natalia Fidorów-Kaprawy, Małgorzata Szulgowska-Zgrzywa. The influence of the ground coupled heat pump's labor on the ground temperature in the boreholes – Study based on experimental data. Applied Thermal Engineering. 2015; 82 ():237-245.

Chicago/Turabian Style

Natalia Fidorów-Kaprawy; Małgorzata Szulgowska-Zgrzywa. 2015. "The influence of the ground coupled heat pump's labor on the ground temperature in the boreholes – Study based on experimental data." Applied Thermal Engineering 82, no. : 237-245.

Original articles
Published: 16 October 2013 in Energy Sources, Part B: Economics, Planning, and Policy
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In connection with the implementation of the energetic certification law in the European Union the issues relating to an air-to-water heat pump performance in a monovalent system in European climatic conditions have been discussed in this article. Running costs for an air-to-water heat pump-based system and conventional systems have been estimated. Analysis based on the law and concerned mono mode operation of a heat pump has been carried out for a classic single family house that has been built according to the standards and regulations valid in Poland.

ACS Style

J. Danielewicz; N. Fidorów; P. Jadwiszczak; M. Szulgowska-Zgrzywa. The Exploitation Costs for Various Heating Systems According to the Energetic Certification Law in Poland. Energy Sources, Part B: Economics, Planning, and Policy 2013, 9, 301 -306.

AMA Style

J. Danielewicz, N. Fidorów, P. Jadwiszczak, M. Szulgowska-Zgrzywa. The Exploitation Costs for Various Heating Systems According to the Energetic Certification Law in Poland. Energy Sources, Part B: Economics, Planning, and Policy. 2013; 9 (3):301-306.

Chicago/Turabian Style

J. Danielewicz; N. Fidorów; P. Jadwiszczak; M. Szulgowska-Zgrzywa. 2013. "The Exploitation Costs for Various Heating Systems According to the Energetic Certification Law in Poland." Energy Sources, Part B: Economics, Planning, and Policy 9, no. 3: 301-306.

Book chapter
Published: 21 May 2013 in Environmental Engineering IV
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ACS Style

J Danielewicz; N Fidorów; M Szulgowska-Zgrzywa. A ground source heat pump with the heat exchanger regeneration—simulation of the system performance in a single family house. Environmental Engineering IV 2013, 357 -367.

AMA Style

J Danielewicz, N Fidorów, M Szulgowska-Zgrzywa. A ground source heat pump with the heat exchanger regeneration—simulation of the system performance in a single family house. Environmental Engineering IV. 2013; ():357-367.

Chicago/Turabian Style

J Danielewicz; N Fidorów; M Szulgowska-Zgrzywa. 2013. "A ground source heat pump with the heat exchanger regeneration—simulation of the system performance in a single family house." Environmental Engineering IV , no. : 357-367.