Abstract
The standardized indicator is the heat transfer resistance as the main factor that plays the main role in assessing the energy efficiency of the thermal envelope of a building. During the last decades, the climatic conditions change toward the increase in average daily temperature in the summer period. Thus, the thermal resistance of external wall structures becomes more and more urgent. This problem is reduced to an assumption that the heat flow in the wall structure is directed from the external surface to the internal. This paper analyzes the heat flow distribution and redistribution in time in the wall structure. The paper presents a comparative analysis of the modelling and calculation results of the nonstationary heat flow for solving the thermal stability problem.
Highlights
Для цитирования: Белоус А.Н., Белоус О.Е., Крахин С.В
The standardized indicator is the heat transfer resistance as the main factor that plays the main role in assessing the energy efficiency of the thermal envelope of a building
The climatic conditions change toward the increase in average daily temperature in the summer period
Summary
The standardized indicator is the heat transfer resistance as the main factor that plays the main role in assessing the energy efficiency of the thermal envelope of a building. Белоус А.Н., Белоус О.Е., Крахин С.В., 2021 and more urgent This problem is reduced to an assumption that the heat flow in the wall structure is directed from the external surface to the internal. For citation: Belous A.N., Belous O.E., Krakhin S.V. Pereraspredelenie teplovogo potoka v tolshche ograzhdayushchei konstruktsii pri sutochnom tsikle letnego perioda [Heat flow redistribution in wall structure during diurnal cycle in summer]. При оценке (наружных ограждающих конструкций) эксплуатации жилых и общественных зданий в летний период года необходимо учитывать все особенности летнего теплового режима, для которого характерна периодичность, связанная с суточным колебанием параметров наружного воздуха и интенсивностью солнечной радиации. Богословский [13] предложил ограничить амплитуду колебания температуры на внутренней поверхности наружных ограждающих конструкций в летний период года, что соответствует 2-му условию комфортности. Для построения температурного поля во времени в толще ограждающей конструкции необходимо решить уравнение Фурье при нестационарном режиме теплового потока. Распределение температуры у наружной поверхности в модели необходимо задавать по закону косинуса с максимумом и минимумом значений в 3 часа дня и 3 часа ночи по солнечному времени, вычисленных согласно формуле (1)
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