Special aspects of calculation of infiltration in residential and public buildings

Zubarev, Kirill; Timofeeva, Marina

doi:10.1051/e3sconf/202338906001

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…Each of the listed facilities has its own unique set of qualities and is an integral part of the urban improvement system [9][10]. But at the same time, the construction and operation of such facilities has a negative impact on the ecological state of the urban ecosystem.…”

Section: Resultsmentioning

confidence: 99%

Methodology for ensuring the environmental safety of territories with science-based choice of environmental measures

2023

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In modern conditions, ensuring the environmental safety of urbanized territories is very relevant. However, the selection and implementation of environmental measures without scientific justification are not always successful. The aim of the research is to develop a methodology for ensuring the environmental safety of urbanized territories with science-based choice of environmental measures. The authors have developed an algorithm for implementing a methodology for ensuring the environmental safety of urbanized territories with environmentally efficient and energy-efficient-based choice environmental measures, including three main stages: collecting initial information about the object, choosing and ranking indicators for evaluating the effectiveness of environmental measures, search and choice of the optimal solution to the problem from the existing array of current technical solutions. The algorithm automation using artificial intelligence will allow the authors to launch an online service with environmental measures based choice.

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Section: Resultsmentioning

confidence: 99%

Methodology for ensuring the environmental safety of territories with science-based choice of environmental measures

2023

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“…The important condition for solving these complex problems is the development of new building materials with high strength and durability that are safe for human health and the natural environment [3]. The central task of energy-efficient design is to reduce heating costs while maintaining the conditions for human comfort [4]. Although new energy-efficient materials and innovative technologies are constantly emerging in the construction industry, the search for even more promising solutions does not end.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Thermal Properties of an Energy-Efficient Cement Composite Incorporating Silica Aerogel

Koriakovtseva,

Dontsova,

Nemova

2024

Buildings

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The thermal performance of the building envelope is significant in energy-efficient construction. Because concrete is widely used in civil engineering, options to reduce its R-value should be considered. This study explores the thermal and structural properties of aerogel-enhanced concrete. Silica aerogel powder was mixed with fine-grained concrete at 15 vol.%. Two series of samples were prepared to identify the preferred technology. The first series of samples were mixed without isopropyl alcohol; for the second series, the alcohol was mixed with silica aerogel before mixing into the dry mix. The thermal conductivity, compressive strength, and bending resistance of the specimens were measured. The presence of silica aerogel admix resulted in a decrease in the compressive strength of the specimens by 30% compared with that of the reference samples and a reduction in the bending strength of the samples by 9% compared with that of the reference samples. For the first and second series of samples, the K-values of the aerogel-enhanced specimens varied in the range from 0.83 W/(m·K) to 1.13 W/(m·K), respectively. To further decrease the thermal conductivity, gypsum putty was then added to the specimens, resulting in the K-values further decreasing to 0.64 W/(m·K) and 0.84 W/(m·K), respectively. The calculation of heat losses through 1 m2 of the aerogel-enhanced concrete wall was performed. It has been shown that energy expenses for heating can be lowered by 30%. The calculation of the greenhouse gas emissions from the combustion of fuel required for heating was also considered. The emissions decreased by 30.2% compared with the reference sample. Microscopic examination of the face and section surfaces of the sample revealed a significant number of pores compared with conventional fine-grain concrete.

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Functional redundancy of air exchange processes in technological premises for poultry keeping

Rotova,

Asmankin,

Ushakov

et al. 2024

BIO Web Conf.

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The article focuses on the problem associated with emergency power outages at poultry farms. Poultry farming is one of the key branches of agriculture underlying the implementation of the country’s food security doctrine. The trouble-free operation of the technological equipment of poultry workshops is an important and essential condition for improving the productivity and health of poultry. The article presents a method for calculating the multiplicity of air exchange, which makes it possible to determine the optimal parameters of natural ventilation to stabilize microclimatic conditions in a poultry shop in the event of an emergency in the power supply system. The analysis of infrared thermography of the poultry housing confirms the presence of thermally stressed zones and the unevenness of their distribution, which is a prerequisite for creating a model for leveling temperature fields to a physiologically comfortable level for poultry. The article proposes to consider the issue of introducing refrigeration units into the production cycle as a method of solving the issue of livestock safety if it is necessary to transfer the ventilation system to a free-convection mode. The arguments put forward in the article are focused on the impossibility of the bird’s vital activity during the transitional and warm periods, even with a short-term shutdown of the ventilation system. The creation of a temperature difference will provide a backup air exchange for the period of repair work. The analysis of electricity consumption at a poultry enterprise by month allows us to put forward a proposal to redistribute part of it to the cold storage process. The preliminary calculations carried out confirm the sufficiency of the part of the electricity allocated for the implementation of air-conditioned air exchange, with the “tunnel” type ventilation used.

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Special aspects of calculation of infiltration in residential and public buildings

Cited by 3 publications

References 24 publications

Methodology for ensuring the environmental safety of territories with science-based choice of environmental measures

Methodology for ensuring the environmental safety of territories with science-based choice of environmental measures

Mechanical and Thermal Properties of an Energy-Efficient Cement Composite Incorporating Silica Aerogel

Functional redundancy of air exchange processes in technological premises for poultry keeping

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