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Jitka Mohelníková

Bio: Jitka Mohelníková is an academic researcher from Brno University of Technology. The author has contributed to research in topics: Daylighting & Daylight. The author has an hindex of 10, co-authored 37 publications receiving 335 citations.

Papers
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Journal ArticleDOI
TL;DR: In this article, a study focused on the selection of convenient materials for thin reflective films and optimisation of their composition in coatings was presented, which brought design recommendations for the optimised composition of thin infrared reflective coatings for window glazing applications.

91 citations

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TL;DR: In this article, the theoretical description of light rays transport inside the tubular light guide and their distribution on the output from the light guide at the level of the ceiling is presented.

56 citations

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TL;DR: In this article, an internal assessment of thermal comfort and daylighting conditions in such a building was carried out and the results indicated that such designs are to be commended for their passive use of solar energy and can provide a high quality working environment.

27 citations

Journal ArticleDOI
TL;DR: In this article, the authors compared four variations of light pipes with a segment of a flat roof and found that the additional glass units increased thermal resistance and reduced condensation risks of the light guiding systems.

22 citations

Journal ArticleDOI
15 May 2020-Energies
TL;DR: In this paper, a case study of energy consumption in selected school buildings in temperate climatic conditions of Central Europe region was performed based on data analysis of energy audits, which aimed at assessment of the school building envelopes and their influence on energy consumption.
Abstract: Existing building stock represents potential for energy saving renovations. Energy savings and indoor climate comfort are key demands for sustainable building refurbishment. Especially in schools, indoor comfort is an extremely important issue. A case study of energy consumption in selected school buildings in temperate climatic conditions of Central Europe region was performed. The studied buildings are representatives of various school premises constructed throughout the last century. The evaluation was based on data analysis of energy audits. The goal was aimed at assessment of the school building envelopes and their influence on energy consumption. One of the studied schools was selected for detailed evaluation. The school classroom was monitored for indoor thermal and visual environments. The monitoring was performed to compare the current state and renovation scenarios. Results of the evaluation show that the school buildings are highly inefficient even if renovated. Indoor climate in classrooms is largely influenced by windows. Solar gains affect interior thermal stability and daylighting. Thermal insulation quality of building envelopes and efficient solar shading systems appear to be fundamental tasks of school renovation strategies.

21 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, the authors rigorously review various types of glass coatings and glazing systems including conventional, advanced, and smart and highlight their paramount features, and discuss the possibility of employing different window technologies for hot, cool, and temperate climates.

281 citations

01 Jan 2009
TL;DR: In this paper, the authors summarize recent work on thermochromic VO 2 -based thin films with particular attention to multi-layer of VO 2 and TiO 2 and new VO 2 :Mg films for which the doping gives significantly lowered absorption of visible light.
Abstract: Abstract Chromogenic materials allow the transmittance of visible light and solar energy to be varied under the action of an external stimulus. This paper first discusses buildings related energy savings that can be accomplished by chromogenic technologies, and their beneficial effects on comfort issues. We then summarize recent work on thermochromic VO 2 -based thin films with particular attention to multi-layers of VO 2 and TiO 2 and to new VO 2 :Mg films for which the doping gives significantly lowered absorption of visible light. The final part covers electrochromic materials and devices with foci on coloration efficiency and on durability issues for foil-type constructions based on films of WO 3 and NiO.

176 citations

Journal ArticleDOI
TL;DR: In this paper, a review of low-emissivity (low-e) materials and products found on the market, and their possible implementations and benefits when used in buildings is presented.

157 citations

Journal ArticleDOI
TL;DR: A comprehensive review of solar facades is presented in this article, highlighting the categories of ventilated facades and semi-transparent building-integrated photovoltaic facades.
Abstract: In the first paper of a series of two publications entitled “A comprehensive review of solar facades. Opaque solar facades” an exhaustive review of scientific studies carried out during the last decade on opaque solar facades was proposed. The paper dealt with facades that absorb and reflect the incident solar radiation but cannot transfer directly solar heat gain into the building. This article offers a complementary survey of studies conducted during the same period of time on transparent and translucent solar facades, highlighting the categories of ventilated facades and semi-transparent building-integrated photovoltaic facades.

148 citations

Journal ArticleDOI
TL;DR: In this article, the authors carried out a state-of-the-art study on the technologies or control systems of natural light in buildings, concentrating on those control methods which not only protect the occupants from direct solar glare but also maximize natural light penetration in buildings based on the occupants preferences, whilst allowing for a reduction in electrical consumption for lighting and cooling.
Abstract: The residential sector is responsible for approximately a quarter of energy consumption in Europe. This consumption, together with that of other buildings, mainly from the tertiary sector, makes up 40% of total energy consumption and 36% of CO2 emissions. Artificial lighting makes up 14% of electrical consumption in the European Union and 19% worldwide. Through the use of well-designed natural lighting, controlled by technologies or systems which guarantee accessibility from all areas inside buildings, energy consumption for lighting and air conditioning can be kept to a minimum. The authors of this article carried out a state of the art on the technologies or control systems of natural light in buildings, concentrating on those control methods which not only protect the occupants from direct solar glare but also maximize natural light penetration in buildings based on the occupants׳ preferences, whilst allowing for a reduction in electrical consumption for lighting and cooling. All of the control and/or natural light guidance systems and/or strategies guarantee the penetration of daylight into the building, thus reducing the electrical energy consumption for lighting and cooling. At the same time they improve the thermal and visual comfort of the users of the buildings. However various studies have also brought to light certain disadvantages to these systems.

134 citations