Experimental analysis of grills configuration for an open joint ventilated facade in summertime

Masi, Rosa Francesca De; Festa, Valentino; Gigante, Antonio; Ruggiero, Silvia; Vanoli, Giuseppe Peter

doi:10.1016/j.jobe.2022.104608

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…The proposed configurations provide a reduction in energy consumption by 11.4 % and 6.5 % compared to a conventional monolithic facade, respectively, while closed channels were not taken into account in the cited work. Study [38] reports a new statistical approach to the selection of daily reference scenarios, aimed at comparing the thermal field and ventilation with two degrees of openness of the gratings in the air gap. The analysis showed that the open channel is always characterized by higher airflow velocities: 75 % of the controlled values are less than 0.4 m/s, and peak values are about 2.0 m/s compared to the semi-closed configuration.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Revealing patterns of thermophysical parameters in the designed energy-saving structures for external fencing with air channels

Tagybayev,

Zhangabay,

Suleimenov

et al. 2023

EEJET

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This study reports the design of new models of energy-saving enclosing structures with air channels. To calculate the thermophysical parameters of external fences, the Maple computer algebra system was used; the value of thermal resistance of structures was determined on the basis of a finite-element method in ANSYS. The result of the structure analysis showed that the value of thermal inertia of the traditional design and the average value of the thermal inertia of the developed structures were equal. However, the vibration amplitude of the designed enclosing structures was up to 20.72 % more efficient than the traditional one. At the same time, it was revealed that the air gaps did not affect the thermal inertia of the strucure, and its parameters depended only on the total thickness of the material. The analysis showed that the vapor permeability of the inner wall of the designed structures was equal to the traditional one. However, the value of resistance to vapor permeation of the fence of the developed structures was 3.21 % more effective. At the same time, the use of a closed air layer with a heat-reflecting screen makes it possible to shift the possible condensation zone towards the outer surface of the fence. An analysis of the check for the non-condensation of condensate in the ventilated air gap showed that condensate did not fall out in the ventilated air gap in all the considered schemes, and the results of the analysis by the air permeability value showed that all fencing schemes met the requirements for air permeability. Solving the problems of energy saving in construction through the development of new energy-efficient designs of enclosing structures help reduce the cost of thermal energy of buildings, which is an urgent task all over the world today

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Revealing patterns of thermophysical parameters in the designed energy-saving structures for external fencing with air channels

Tagybayev,

Zhangabay,

Suleimenov

et al. 2023

EEJET

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“…After that, the best solution was chosen for further research on the worked-out walls. The study presented by Alaidroos and Krarti [21] instead illustrated a quantitative simulation technique to assess the execution of a suggested passive refrigeration system for cooling premises in boiling and parched weather conditions [22,23]. The reproduction outcomes showed that a considerable decrease in cooling pressure can be reached because the wall enclosure can assimilate heat from both inner and outer spaces while offering an allowable support air temperature able to sustain heat convenience inside premises.…”

Section: Introductionmentioning

confidence: 99%

Research of Heat Tolerance and Moisture Conditions of New Worked-Out Face Structures with Complete Gap Spacings

Zhangabay,

Bonopera,

Baidilla

et al. 2023

Buildings

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In this work, two new face structures of the open-air protection fence were investigated, where a method was proposed for analyzing the condensation of water vapor in the protection fence to search for a condensation zone. Another method for calculating the amount of condensed vapor in a multiwall protection fence with closed gap spacings was proposed. The analytical results illustrated that the magnitude of the range of temperature variations of the worked-out structures with gap spacings and without heat-reflecting screens was 7.14% lower, while the existence of heat-reflective screens reduced this value to 27.14%. The investigation of the water vapor transmission magnitude demonstrated that the steam permeability strength of the interior side and retaining walls of the developed buildings amounts to the standard one, while the usage of a locked air space with a thermo-reflective panel allows the movement of the appropriate condensing region over the external face of the fencing. Mass analysis of the precipitated vapor during the heating time of 1 m2 of the retaining wall showed that in face structures in closed gap spacings with heat-reflective screens, the mass of the precipitated vapor was 24.8% greater relative to that of the face without heat-reflective screens. Moreover, the examination of the absence of distillation in the oxygenated gap spacing proved that, in the gap spacing in the considered face structures, the condensate does not fall out such that there is no aggregation of humidity according to the annual balance. Furthermore, the drying time of the face structure with heat-reflecting screens was 17.9% longer than that of the traditional one. The research results can complement the works performed earlier by the authors, as well as be applied in the engineering and construction of buildings to save thermal power, considering the climatic features of the development region.

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Modular Construction. Modular Ventilated Façade Concept

Kotlyarskaya,

Sinelnikov,

Vatin

et al. 2023

Lecture Notes in Civil Engineering

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Experimental analysis of grills configuration for an open joint ventilated facade in summertime

Cited by 3 publications

References 19 publications

Revealing patterns of thermophysical parameters in the designed energy-saving structures for external fencing with air channels

Revealing patterns of thermophysical parameters in the designed energy-saving structures for external fencing with air channels

Research of Heat Tolerance and Moisture Conditions of New Worked-Out Face Structures with Complete Gap Spacings

Modular Construction. Modular Ventilated Façade Concept

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