Hydraulics of natural convection flows in building walling with air gap

Petrichenko, Mikhail; Petrochenko, Marina

doi:10.5862/mce.26.8

Cited by 10 publications

(6 citation statements)

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“…If width of the gap is reduced, velocity and temperature of air in the gap grows that in one hand improves thermal-humidity conditions of surface, but in the other hand worsens expenditure and water-carrying capacity of the air, and they determine water assimilation ability. Derived results corresponds with data of the works [27,28,29]. 2.…”

Section: Discussionsupporting

confidence: 63%

Air Gap between Protective Screen and Surface of Reinforced Concrete Cooling Tower

Barabanshikov¹,

Belyaeva

Antonova

et al. 2014

AMR

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The article considers the problem of effective protection of the cooling tower shell using the screen with a ventilated air gap. The aim is to determine the optimal parameters of the air gap. In operation, the calculations were performed showing the effects of temperature conditions and the thickness of the gap on the aerodynamic and thermal modes of operation. The article made conclusions based on the done calculations. The optimum thickness of the gap, provided heating air inlet, which provides the ability to assimilate air moisture throughout the layer and delete it in the atmosphere, which in the future will eliminate condensation on the cold surface of a concrete shell.

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Section: Discussionsupporting

confidence: 63%

Air Gap between Protective Screen and Surface of Reinforced Concrete Cooling Tower

Barabanshikov¹,

Belyaeva

Antonova

et al. 2014

AMR

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“…Calculations have shown that the moisture-windproof membrane does no affect on the formation of a condensation plane in the outer wall. In the works [17][18][19] it is noted that the speed of air movement in the air gap within the range of up to 30 m is insignificant, which reduces the likelihood of mass emission of insulation fibers.…”

Section: Discussionmentioning

confidence: 99%

Problems of thermal protection of two-layer external walls with hinged facade systems

et al. 2021

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Currently, in the Republic of Khakassia, much attention is paid to research aimed at reducing air pollution due to fuel combustion. In this aspect, the issue of increasing the energy efficiency of buildings is relevant. The use of ventilated facade systems with an air gap makes it possible to improve the energy efficiency class of buildings and modernize the facades. However, these facade systems have weak points that require detailed and high-quality study. Often, design solutions are used that are used in warm climates without taking into account the peculiarities of a cold climate - frequent changes in temperature, humidity, wind loads, and other influences, which can lead to negative manifestations. Facade systems with a ventilated air gap must provide the ability to monitor the operability of all system elements and, if necessary, carry out repair and reconstruction work with minimal operating costs. The article presents an analysis of the thermal properties of an external fence using a hinged facade structure. The influence of installation defects and heat-conducting inclusions on the heat-shielding properties of the building envelope is shown. It was determined that during operation the moisture-windproof membrane loses its vapor-permeable properties.

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“…It is also considered that the particles possess conservative properties in this case i.e. they don't change their chemical characteristics when being transported by the volume of gas [5,6]. Nowadays a number of mathematic models which describe this process are used [9,12,24].…”

Section: Methodsmentioning

confidence: 99%

Energy Performance of Particle Settling in Cyclones

Strelets

Petrochenko

Girgidov

2015

AMM

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The most common way of how to purify gas from the solid and fluid air contaminant particles contained therein is the flow deformation and removal of particles under the action of inertial forces. This approach is realized in the cyclone system. To estimate the particles settling regularity and to optimize the construction of the cyclone device mathematic models of movement of particles in the rotational flow are used. Nowadays a number of mathematic models which describe this process are used. Normally the impact of the rotational flow turbulence is not taken into account in the existing models. Essentially new possibilities to estimate the particles settling regularity are provided by using the model of the turbulent diffusion with the finite velocity (DFV) which is demonstrated in the article.

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Hydraulics of natural convection flows in building walling with air gap

Cited by 10 publications

References 0 publications

Air Gap between Protective Screen and Surface of Reinforced Concrete Cooling Tower

Air Gap between Protective Screen and Surface of Reinforced Concrete Cooling Tower

Problems of thermal protection of two-layer external walls with hinged facade systems

Energy Performance of Particle Settling in Cyclones

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