Evaluation of Heat Transfer Rates through Transparent Dividing Structures

Басок, Б. І.; Davydenko, B. V.; Novikov, V.; Pavlenko, Аnatoliy; Novitska, Maryna; Sadko, Karolina; Гончарук, С.М.

doi:10.3390/en15134910

Cited by 9 publications

(5 citation statements)

References 31 publications

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“…The results of numerous studies on heat transfer through single-and double-chamber windows are presented in previous works [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Gan [1] studied heat transfer through a double-glazed window.…”

Section: Analysis Of Known Research Resultsmentioning

confidence: 99%

“…Previous works [7][8][9] studied the influence of the angle of inclination of a translucent structure on the dynamics of gas flow in the gap between glass surfaces and heat transfer. The results of numerous studies on the flow of gas filling the gaps between glasses and the temperature regime of inclined window structures were considered by Toghroli et al [7].…”

Section: Analysis Of Known Research Resultsmentioning

confidence: 99%

“…Using numerical simulation, heat transfer and air flow in the gap between glass layers in a double-glazed window were studied by Basok et al [9]. It was shown that the cyclic regime of air flow in the form of ascending and descending boundary layers under certain conditions loses stability and the vortex regime changes.…”

Section: Analysis Of Known Research Resultsmentioning

confidence: 99%

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Heat Transfer through Double-Chamber Glass Unit with Low-Emission Coating

Koshlak,

Basok,

Davydenko

2024

Energies

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The numerical modeling of radiation and convective heat transfer through a double-chamber glass unit was carried out to substantiate the increase in the heat transfer resistance of this unit via the application of low-emission coatings to glass surfaces. In the space between the panes of a window without low-emission coatings, the amount of heat transferred via radiation exceeds the amount of heat transferred via thermal conductivity and convection. The question of the effect of low-emissivity coatings on reducing heat loss through a window has not yet been sufficiently studied. This problem is also not sufficiently reflected in the literature. In this regard, this paper presents the results of numerical simulation aimed at studying the effect of low-emissivity coatings on heat transfer through a double-chamber glass unit. Simulation is carried out by numerically solving a system of equations of fluid dynamics and energy for the air gap and glass. Boundary conditions of the fourth kind are set on the internal surfaces of the chambers, taking into account the radiation and conduction components of the total heat flux emanating from the glass. The results of modeling heat transfer through a glass unit with ordinary glass show that about 60% of the heat is transferred by radiation. Therefore, an effective measure to reduce heat loss through windows is to reduce the radiation component of the total heat flux by applying a low-emissivity coating to the internal surfaces of the glass unit. This allows for the reduction of the overall heat flux (and, accordingly, heat loss to the environment) by 20–34%, depending on the number of glass surfaces with such a coating.

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Section: Analysis Of Known Research Resultsmentioning

confidence: 99%

Section: Analysis Of Known Research Resultsmentioning

confidence: 99%

Section: Analysis Of Known Research Resultsmentioning

confidence: 99%

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Heat Transfer through Double-Chamber Glass Unit with Low-Emission Coating

Koshlak,

Basok,

Davydenko

2024

Energies

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“…The coefficient of heat transfer on the outer surface of the glass unit is α out = 23 W/(m 2 K), and on the inner surface α in = 23 W/(m 2 K). The formulation and method of numerical solution of such a problem are considered in more detail in (Basok et al 2016, Basok et al 2023a, Basok et al 2023b, Basok et al 2022.…”

Section: Problem Statementmentioning

confidence: 99%

Heat Transfer Through a Three-chamber Glass Unit

Basok,

Davydenko,

Pavlenko

et al. 2024

Rocznik Ochrona Środowiska

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A well-known way to increase the thermal insulation properties of windows in buildings is to increase the number of glasses in a window or, what is the same, to increase the number of glass chambers in a glass unit. This method, in combination with low-emissivity coatings on the inner surfaces of glass, can provide a significant increase in the heat transfer resistance of window structures. The use of such windows in construction can significantly reduce heat loss from the premises in the winter, which leads to a reduction in energy costs for heating and increases the energy efficiency of the building. In this work, the characteristics of heat transfer through a three-chamber glass unit are studied using numerical modeling and experimental study. Options for the absence and presence of low-emissivity coatings on glass are considered. Changes in air velocity and temperature in the chambers are studied. Heat transfer resistance for three-chamber windows are calculated depending on the number of low-emissivity coatings on the glass.

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“…• збільшення відстані між стеклами в склопакеті вікна приводить до появи вихорів та інших збурень потоку, які впливають на термічний опір конструкції [13,14];…”

Section: фундаментальна теплофізична інженерія будівель у контексті в...unclassified

Фундаментальна Теплофізична Інженерія Будівель У Контексті Відновлення України

Басок¹

2023

Visn. Nac. Akad. Nauk Ukr.

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У доповіді проаналізовано досвід Інституту технічної теплофізики НАН України з проведення робіт за напрямом фундаментальної теплофізичної інженерії будівель і споруд з метою доведення їх до стану пасивних будівель, будівель «нуль енергії», «розумних» будівель за умови підвищення їхньої енергетичної стійкості та мінімізації викидів парникових газів. Результати цих досліджень спрямовано на вирішення актуальних і стратегічно важливих науково-технічних проблем, пов’язаних із суттєвим підвищенням енергетичної ефективності наявних, відбудованих і новозбудованих будівель та споруд України згідно з вимогами енергетичного і кліматичного законодавства ЄС.

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Evaluation of Heat Transfer Rates through Transparent Dividing Structures

Cited by 9 publications

References 31 publications

Heat Transfer through Double-Chamber Glass Unit with Low-Emission Coating

Heat Transfer through Double-Chamber Glass Unit with Low-Emission Coating

Heat Transfer Through a Three-chamber Glass Unit

Фундаментальна Теплофізична Інженерія Будівель У Контексті Відновлення України

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