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Marcin Furtak
Faculty of Civil Engineering, Cracow University of Technology, 31-155 Cracow, Poland

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Journal article
Published: 23 December 2019 in Energies
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Improving the energy efficiency of buildings is among the most urgent social development tasks due to the scale of energy consumption in this industry. At the same time, it is essential to meet high requirements for indoor environmental quality and thermal comfort. The issue of overheating is most often analysed in summer but it also occurs in transition seasons, when the cooling systems do not operate. The paper attempts to evaluate the effectiveness of external mobile shading elements on the microclimate of rooms with large glazed areas in the transition season. Passive solutions, such as shading elements, which limit the increase of indoor temperature, do not always allow the acquisition and maintenance of comfortable solutions for the duration of the season, as demonstrated by the authors. Temporary cooling of the rooms may be necessary to maintain comfortable conditions for the users, or other solutions should be devised to improve comfort (e.g., reduction of clothing insulation characteristics). The novelty of the study consists in the analysis of comfort in a “nearly zero energy consumption” building (NZEB) during a period not analyzed by other scientists. This is a transition period during which heating/cooling systems do not operate. The research task set by the authors involved the assessment of the possibility to reduce office space overheating in the transition season (spring) by using external shading equipment in rooms with large glazed areas. An additional research task aimed at checking the extent to which user behaviour, such as reduction in clothing insulation characteristics, can improve comfort in overheated rooms. The results of the tests reveal that the difference in the ambient air temperature between a room with external venetian blinds and an identical room with no venetian blinds in the transition season, i.e., from 27 March to 6 April 2017, ranged from 12.3 to 2.1 °C. The use of a shading system (external venetian blinds positioned at an angle of 45°) reduced the number of discomfort hours by 92% (during working hours) compared to the room without external venetian blinds. A reduction in the thermal insulation of the clothes worn by people working in the room with no venetian blinds helped to reduce the number of discomfort hours by 31%.

ACS Style

Małgorzata FEDORCZAK-CISAK; Katarzyna Nowak; Marcin Furtak. Analysis of the Effect of Using External Venetian Blinds on the Thermal Comfort of Users of Highly Glazed Office Rooms in a Transition Season of Temperate Climate—Case Study. Energies 2019, 13, 81 .

AMA Style

Małgorzata FEDORCZAK-CISAK, Katarzyna Nowak, Marcin Furtak. Analysis of the Effect of Using External Venetian Blinds on the Thermal Comfort of Users of Highly Glazed Office Rooms in a Transition Season of Temperate Climate—Case Study. Energies. 2019; 13 (1):81.

Chicago/Turabian Style

Małgorzata FEDORCZAK-CISAK; Katarzyna Nowak; Marcin Furtak. 2019. "Analysis of the Effect of Using External Venetian Blinds on the Thermal Comfort of Users of Highly Glazed Office Rooms in a Transition Season of Temperate Climate—Case Study." Energies 13, no. 1: 81.

Journal article
Published: 19 December 2019 in Energies
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The growing popularity of buildings with integrated sub-systems requires a review of methods to optimize the preheating of ventilation air. An integrated system permits using geothermal heat storage parallel to the direct outdoor air intake with additional treatment in the mechanical room as a part of building an automatic control system. The earth–air heat exchanger (EAHX) has many advantages but also has many unanswered questions. Some of the drawbacks are: A possible entry of radon gas, high humidity in the shoulder seasons, and the need for two different air intake sources with a choice that depends on the actual weather conditions. In winter the EAHX may be used continuously to ensure thermal comfort, while in other seasons its operation must be automatically controlled. To generate missing information about EAHX technology we examined two nearly identical EAHX systems, one placed in the ground next to a building and the other under the basement slab. In another project, we reinforced the ground storage action by having a heat exchanger placed on the return pipes of the hydronic heating system. The information provided in this paper shows advantages of merging both these approaches, while the EAHX could be placed under the house or near the basement foundation that is using an exterior basement insulation.

ACS Style

Anna Romanska-Zapala; Mark Bomberg; Miroslaw Dechnik; Malgorzata FEDORCZAK-CISAK; Marcin Furtak. On Preheating of the Outdoor Ventilation Air. Energies 2019, 13, 15 .

AMA Style

Anna Romanska-Zapala, Mark Bomberg, Miroslaw Dechnik, Malgorzata FEDORCZAK-CISAK, Marcin Furtak. On Preheating of the Outdoor Ventilation Air. Energies. 2019; 13 (1):15.

Chicago/Turabian Style

Anna Romanska-Zapala; Mark Bomberg; Miroslaw Dechnik; Malgorzata FEDORCZAK-CISAK; Marcin Furtak. 2019. "On Preheating of the Outdoor Ventilation Air." Energies 13, no. 1: 15.

Conference paper
Published: 18 September 2019 in IOP Conference Series: Materials Science and Engineering
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The construction sector consumes around 40% energy for the purposes of heating. The policy of sustainable development that has been implemented for many years also transfers to actions in the construction sector. The European Union is introducing a standard of buildings with a near-zero energy demand. This standard can be achieved only by altering the manner of the design, construction and use of buildings. Such parameters like geometry or the placement of buildings relative to each other and the structure of their layout on the site, on the scale of groups of buildings, also have an impact on the energy consumption. The goal of this article is to assess the improvement of the effectiveness of actions taken in order to lower the energy demand for heating of designed buildings meant for permanent occupancy. The assessment takes into consideration the conditions of sustainable development. The analysis covers the impact of the geometry of a building and development structure on the energy balance.

ACS Style

Malgorzata FEDORCZAK-CISAK; Marcin Furtak; Michal Ciula; Michał Krupa. Building geometry and development form optimisation in terms of the energy efficiency. IOP Conference Series: Materials Science and Engineering 2019, 603, 042063 .

AMA Style

Malgorzata FEDORCZAK-CISAK, Marcin Furtak, Michal Ciula, Michał Krupa. Building geometry and development form optimisation in terms of the energy efficiency. IOP Conference Series: Materials Science and Engineering. 2019; 603 (4):042063.

Chicago/Turabian Style

Malgorzata FEDORCZAK-CISAK; Marcin Furtak; Michal Ciula; Michał Krupa. 2019. "Building geometry and development form optimisation in terms of the energy efficiency." IOP Conference Series: Materials Science and Engineering 603, no. 4: 042063.

Conference paper
Published: 18 September 2019 in IOP Conference Series: Materials Science and Engineering
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Near zero energy buildings (NZEB) and passive buildings are designed to minimize the energy consumption. The building's "almost zero energy demand" standard, which will be in force in Europe from 2021, additionally imposes an obligation on buildings to use the energy from renewable sources. It should be remembered that in addition to the applicable criteria for NZEB buildings, the comfort of use of the rooms is equally important. The development of low-energy buildings resulted in new products and technologies on the construction and installation materials market. Radiator heating is increasingly being abandoned for surface or air heating. In the lighting industry, which also generates the energy consumption, products based on LED technology are developing. Both new heating and lighting systems have a very large impact on the comfort of using NZEB buildings. In this article, the Authors will present the results of "in situ" research regarding the feeling of comfort in an office space heated using fan coil units. The ventilation system also influences the feeling of comfort. The location of the ventilators in the room and the stream of supply air may cause discomfort. The authors will check the comfort conditions in different places of the room, including the propagation of the air stream. Additionally, the Authors will determine the minimum operating temperature of work comfort in the tested room, with the air heating. The second research task of this article will be to determine the visual comfort of people, when using recommended illuminance. The aim of the article is to answer the question of how to design workplaces in an air-heated room and how to design lighting to optimize the work comfort and energy consumption. The conclusions from the article will allow formulating the principles for the design of NZEB buildings.

ACS Style

Malgorzata FEDORCZAK-CISAK; Marcin Furtak; Aleksandra Szmelter; Miroslaw Dechnik. The Influence of Air Heating and Lighting on the Comfort Conditions in NZEB Buildings’ Rooms. IOP Conference Series: Materials Science and Engineering 2019, 603, 042064 .

AMA Style

Malgorzata FEDORCZAK-CISAK, Marcin Furtak, Aleksandra Szmelter, Miroslaw Dechnik. The Influence of Air Heating and Lighting on the Comfort Conditions in NZEB Buildings’ Rooms. IOP Conference Series: Materials Science and Engineering. 2019; 603 (4):042064.

Chicago/Turabian Style

Malgorzata FEDORCZAK-CISAK; Marcin Furtak; Aleksandra Szmelter; Miroslaw Dechnik. 2019. "The Influence of Air Heating and Lighting on the Comfort Conditions in NZEB Buildings’ Rooms." IOP Conference Series: Materials Science and Engineering 603, no. 4: 042064.

Journal article
Published: 26 April 2019 in Sustainability
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Designing and constructing near zero energy buildings (NZEBs) is a challenge not only from a structural point of view, but also from the point of view of ensuring appropriate climate comfort for users. The standards describing how to ensure comfort were created in times when the challenges of building ZEB/NZEB were not yet explored and energy issues were not as important as they are today. Therefore, the assessment of the thermal and climatic comfort of people living and working in such buildings requires a new or revised approach to the methodology of thermal comfort assessment. In this article, the authors present the results of a thermal comfort study based on measurements and thermal sensory tests. Testing was carried out in an experimental office building (passive standard). The main goal of the experiment was to compare the thermal comfort measurement method based on the ISO-Fanger model with the actual comfort results obtained by the panellists in the model office condition. The tests allowed the lowest operating temperature providing thermal comfort (predicted mean vote (PMV) = 0 and −0.5) to be determined. Sensory tests were conducted using three types of questions. The results were compared to the other researchers’ findings. It was noted that the panellists showed better thermal comfort sensation at lower temperatures than would result from the traditional Fanger distribution, so the authors proposed the experimental function of percentage of dissatisfied (PPD) = f(PMV). The authors hope that it contributed to the actual state of knowledge as a “small and specific scale” validation of the existing thermal comfort model. The results also revealed that the method of heating has an influence on the subjective thermal sensation.

ACS Style

Michał Piasecki; Małgorzata Fedorczak-Cisak; Marcin Furtak; Jacek Biskupski. Experimental Confirmation of the Reliability of Fanger’s Thermal Comfort Model—Case Study of a Near-Zero Energy Building (NZEB) Office Building. Sustainability 2019, 11, 2461 .

AMA Style

Michał Piasecki, Małgorzata Fedorczak-Cisak, Marcin Furtak, Jacek Biskupski. Experimental Confirmation of the Reliability of Fanger’s Thermal Comfort Model—Case Study of a Near-Zero Energy Building (NZEB) Office Building. Sustainability. 2019; 11 (9):2461.

Chicago/Turabian Style

Michał Piasecki; Małgorzata Fedorczak-Cisak; Marcin Furtak; Jacek Biskupski. 2019. "Experimental Confirmation of the Reliability of Fanger’s Thermal Comfort Model—Case Study of a Near-Zero Energy Building (NZEB) Office Building." Sustainability 11, no. 9: 2461.

Journal article
Published: 18 October 2018 in Sustainability
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Placing emphasis exclusively on minimizing energy consumption in low-energy buildings can adversely impact thermal comfort and vibrational comfort. Vibrational comfort is extremely important in building design, especially within mining or seismically active territories, and due to car transportation in city centers. In this article, a new approach to designing passive buildings and nearly zero-energy buildings (NZEBs) in Poland is proposed, which has a strong emphasis on the necessity of providing comfort of use in passive houses and NZEBs. Additionally, vibration comfort provisions in the design process are examined. The research gap that will be addressed by the research presented in this article is to extend the comfort conditions of passive buildings and NZEBs into the area of vibratory comfort. The second goal of the project is to determine the impact of solar control systems on the conditions of thermal comfort. The conclusions from the research will allow for the optimization of design assumptions for passive houses and NZEBs. The conclusions from the tests can serve as the basis for introducing appropriate construction law requirements in Poland. The results of the research, which are presented in the article, indicate that the technical requirements that are applicable in Poland ought to include requirements regarding the use of sun blinds in NZEBs and passive buildings (not only as recommendations). In particular, the use of apertures on the south side ought to be mandated. The article can also be the basis for introducing the requirements of vibration comfort to the PN–EN 15251:2012 “Indoor environmental input parameters for design and assessment of energy performance of buildings addressing indoor air quality, thermal environment, lighting and acoustics” standard, which is the basis for designing the parameters of the internal environment for buildings.

ACS Style

Małgorzata Fedorczak-Cisak; Marcin Furtak; Jolanta Gintowt; Alicja Kowalska-Koczwara; Filip Pachla; Krzysztof Stypuła; Tadeusz Tatara. Thermal and Vibration Comfort Analysis of a Nearly Zero-Energy Building in Poland. Sustainability 2018, 10, 3774 .

AMA Style

Małgorzata Fedorczak-Cisak, Marcin Furtak, Jolanta Gintowt, Alicja Kowalska-Koczwara, Filip Pachla, Krzysztof Stypuła, Tadeusz Tatara. Thermal and Vibration Comfort Analysis of a Nearly Zero-Energy Building in Poland. Sustainability. 2018; 10 (10):3774.

Chicago/Turabian Style

Małgorzata Fedorczak-Cisak; Marcin Furtak; Jolanta Gintowt; Alicja Kowalska-Koczwara; Filip Pachla; Krzysztof Stypuła; Tadeusz Tatara. 2018. "Thermal and Vibration Comfort Analysis of a Nearly Zero-Energy Building in Poland." Sustainability 10, no. 10: 3774.

Journal article
Published: 05 July 2015 in MATERIAŁY BUDOWLANE
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ACS Style

Marcin Furtak. Energooszczędne elewacje - elementy kształtowania obudowy architektonicznej budynku. MATERIAŁY BUDOWLANE 2015, 1, 113 -117.

AMA Style

Marcin Furtak. Energooszczędne elewacje - elementy kształtowania obudowy architektonicznej budynku. MATERIAŁY BUDOWLANE. 2015; 1 (7):113-117.

Chicago/Turabian Style

Marcin Furtak. 2015. "Energooszczędne elewacje - elementy kształtowania obudowy architektonicznej budynku." MATERIAŁY BUDOWLANE 1, no. 7: 113-117.