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Investigation of thermal and air efficiency in trombe wall of modular building

Zhelykh Vasyl, Ulewicz Małgorzata, Furdas Yurii, Shepitchak Volodymyr

Archives of Civil Engineering

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2023

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Vol. 69, nr 4

663--678

EN

The proposed Trombe wall design is an innovative and effective solution for addressing issues related to building energy efficiency. The Trombe wall can help reduce a building’s energy consumption, provide optimal indoor temperature, and minimize the building’s environmental impact by utilizing renewable energy sources. The article deals with the study of the heat-air characteristics of the Trombe Wall, which performs the functions of external protection of a modular house, with the aim of further evaluating the possibility of using it as a hybrid protection with additional heating and ventilation functions assigned to it. The results of experimental research conducted on one of the elements of external protection of a modular house in the form of the Trombe Wall are presented. The experimentally obtained graphic dependences were compared with the calculated data and the convergence was evaluated. The proposed design allows you to organize air exchange in the premises with a multiplicity within 1-1.5 h-1, and also provides an opportunity to provide additional thermal power in the amount of 250 W/m2. The article presents the results of experimental studies that allow to evaluate the thermal characteristics of the proposed design of external protection for a modular house. These results indicate that with the given geometric dimensions, in particular with a volume of 14 m3, the thermal power utilized by the Trombe wall is within 0.2-0.7 kW.

2

Modeling and analysis of energy and exergy performance of a PCM-augmented concrete-based Trombe wall systems

Ezurike Benjamin O., Okoronkwo Chukwunenye A., Nwokenkwo Uchenna, Ajah Stephen A.

Archive of Mechanical Engineering

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2022

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LXIX, nr 2

245-–257

EN

The aim of this research was to model the performances of energy and exergy on a Trombe wall system to enable an adequate thermal comfort. The main equations for the heat transfer mechanisms were developed from energy balances on subcomponents of the Trombe wall with the specification of the applicable initial and boundary conditions. During the incorporation of the PCM on the Trombe wall, the microencapsulation approach was adopted for better energy conservation and elimination of leakage for several cycling of the PCM. The charging and discharging of the PCM were equally accommodated and incorporated in the simulation program. The results of the study show that an enhanced energy storage could be achieved from solar radiation using PCM-augmented system to achieve thermal comfort in building envelope. In addition, the results correspond with those obtained from comparative studies of concrete-based and fired-brick augmented PCM Trombe wall systems, even though a higher insolation was used in the previous study.

3

Numerical analysis of the thermal behavior of building integrated hybrid solar wall

Abdelbaki Djelaili, Korti Abdel Ilah Nabil

Mechanics and Mechanical Engineering

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2019

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Vol. 23, nr 1

144--149

EN

Building designers have to think about new strategies to achieve the best sustainable building designs. Well-planned passive solar heating strategies in building design may reduce a building’s energy consumption significantly. In this paper, a proposed design of the south façade of a room by integrating a hybrid solar wall and a window to passively heat a room is studied. The simulations for the three-dimensional model of BIPV Trombe wall system were carried out for December 10th, 2015. The temperature and velocity distribution of indoor air in different positions inside the room are obtained from the simulation results. The obtained results show that the temperature difference between the inlet and the outlet of the solar wall can reach 9°C. The 3D analysis of the proposed model clearly shows that the window’s thermal effect on the passive heating cannot be neglected. Meanwhile, the simulation’s daily electrical efficiency conversion and average indoor air temperature of this system can reach 18% and 28°C, respectively for maximum solar radiation of 470 W/m2.

4

Rozwiązania stosowane w budownictwie energooszczędnym a komfort cieplny

Małek M. T., Koczyk H.

Materiały Budowlane

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2016

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nr 7

83--86

PL

W artykule przedstawiono typowe rozwiązania konstrukcyjne ścian zewnętrznych stosowane w budownictwie energooszczędnym pod kątem utrzymania komfortu cieplnego i poprawy efektywności energetycznej. W przeglądzie literatury skoncentrowano się na rozwiązaniach wykorzystujących odnawialne źródła energii oraz zwiększających pojemność cieplną przegród. Zaprezentowano pasywne oraz aktywne ściany słoneczne. Opisano należące do pierwszej grupy: ścianę Trombe'a i jej modyfikacje oraz ścianę wodną, natomiast w przypadku drugiej grupy: barierę termiczną, ścianę zawierającą materiał zmiennofazowy oraz ścianę z rurkami ciepła. Podstawowym zadaniem porównywanych rozwiązań jest ograniczenie chwilowych zysków słonecznych i wykorzystanie ich na cele grzewcze w czasie zwiększonego zapotrzebowania. Dodatkowo zawarto krótki opis komfortu cieplnego wraz z przytoczeniem najważniejszych aktów prawnych i wytycznych.

EN

The article presents the typical construction’s solutions external walls used for energy-efficient building construction in terms of maintaining the thermal comfort and improving energy efficiency. The literature review focused on the solutions which use the renewable energy and increase the heat capacity walls. The passive and active solar energy systems are presented. The Trombe’s wall and its modification and water thermal storage wall are included in the first category, the second section contains the thermal barrier, the wall with phase change material and the wall implanted with heat pipes. The main conclusion is the limitation of the solar heat gains and the usage them in the time of increasing heating demand. In addition, it was included a short description of thermal comfort and was referred to the most important standards and guidelines.

5

Thermal analysis of rooms with solar walls

Wójcicka-Migasiuk D., Zając A.

Archives of Civil Engineering

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2007

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Vol. 53, nr 1

161-173

EN

The paper presents the numerical analysis of heat transfer through solar walls performed by means of Cedrat software. Climatic conditions for the region have been introduced in several data sets divided in groups for winter, fall and hot summer. The analysis has been performed for different types of buildings and is presented on the example of a small two storey house, South oriented. Winter climatic conditions are established as low insolation densities at low temperatures. The visible temperature difference within the building zones is then high (about 15-20°C). Fall conditions are maintained at 10°C with different insolation values and summer conditions are assumed as hot and at high insolation. The solar wall is then presented in its four roles: heating, insulation, cooling and ventilation. Some part of the numerical analysis has been verified by tests on a physical model of a solar wall and both series of results are presented and compared. The conclusion is partially optimistic for our climate, however shows the need of additional construction elements at substantial cost.

PL

Przedstawiono analizę numeryczną wymiany ciepła zachodzącej przez ściany słoneczne. Analizę wykonano za pomocą oprogramowania Cedrat Flux 2DR. Warunki klimatyczne zostały dobrane dla regionu tak, aby zbadać wymianę ciepła w okresach: mroźnej zimy, przejściowym (wiosenno-jesiennym) oraz w warunkach gorącego lata. Analizę przedstawiono na przykładzie budynku jednopiętrowego, w którym ściana słoneczna jest zwrócona w kierunku południowym. Warunki zimowe rozumiane są jako: natężenie promieniowania słonecznego do 300 W/m2, a temperatura powietrza zewnętrznego pomiędzy -5°C i -20°C. Stwierdzone różnice temperatury pomiędzy poszczególnymi strefami w budynku wynoszą do 20 K. Dla okresu przejściowego przyjmowano temp. 0-10°C i różne natężenia promieniowania, a warunki letnie: powyżej 20°C i 600W/m2. Przedstawiono ścianę słoneczną, która spełnia w różnych okresach rolę grzewczą, izolującą lub chłodząco-wentylującą. Niektóre z wyników analizy numerycznej zostały zweryfikowane poprzez pomiary wykonane na modelu fizycznym, jednakże, w ograniczonym zakresie temperatur, tj. powyżej 22°C. Wyniki przedstawiono. Wnioski z analizy są częściowo optymistyczne dla naszego regionu, jednakże wskazują na potrzebę montowania dodatkowych elementów, które zwiększają koszt konstrukcji.