Application of hydrodynamic modeling in 2D and 3D approaches for the improvement of the recycled water supply systems of large energy complexes based on reservoirs-coolers

Lyubimova, Tatyana; Parshakova, Yanina; Lepikhin, Anatoly; Lyakhin, Yury; Tiunov, A.

doi:10.1016/j.ijheatmasstransfer.2019.05.105

Cited by 12 publications

(8 citation statements)

References 15 publications

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“…To this end, they used a different approach to analyzing the environment of the stadium [7]. Lyubimova et al [8] discussed the possibility of increasing the efficiency of the use of sports stadiums. On the basis of the comprehensive analysis, they also considered the extreme utilization situation of the stadium and the situation under the effect of the highest utilization rate [8].…”

Section: Introductionmentioning

confidence: 99%

Energy-Saving Benefits of Air-Source Heat Pump-Assisted Solar Water Heating Systems in Large Stadiums

Yang¹

2022

Advances in Materials Science and Engineering

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With the rising trend of national sports, sports events are more and more favored by people and many large stadiums have emerged as the times require. Due to the particularity of sports, large stadiums are often equipped with independent hot water preparation systems for the convenience of sports enthusiasts. However, the traditional hot water preparation process not only consumes a lot of energy but also brings a lot of potential environmental pollution, which seriously violates the original intention of hot water preparation. Solar energy is clean energy that can be recycled and has a promising market prospect, but its heat production is greatly affected by the weather. Based on this, the paper has proposed a new solar water heating system (SWHS) that relies on the assistance of an air source heat pump (ASHP), aiming to solve the problem of hot water preparation in large sports stadiums from both economic and stability aspects. Taking the Xi’an Olympic Sports Center as an example, the article established the ASHP-aided SWHS and analyzed the differences between the system and other hot water preparation methods in terms of energy efficiency and benefits in terms of economy and environment. The results of the study showed that the energy replacement factor of the ASHP-aided SWHS reached 0.91, which was equivalent to replacing 91% of the annual conventional energy use in one year with this system, with significant energy-saving benefits. This demonstrates the high applicability and energy efficiency of the ASHP-aided SWHS in large sports stadiums.

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Section: Introductionmentioning

confidence: 99%

Energy-Saving Benefits of Air-Source Heat Pump-Assisted Solar Water Heating Systems in Large Stadiums

Yang¹

2022

Advances in Materials Science and Engineering

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“…For this reason, a combined scheme was used in the present paper based on the coupling of the 2D and 3D hydrodynamic models. Previously, this was successfully used to solve a number of topical, applied problems [20,[31][32][33]38].…”

Section: Discussionmentioning

confidence: 99%

“…To analyze the possible modes of sediment flushing, a series of computational experiments was carried out by coupling 2D and 3D hydrodynamic models. This calculation scheme has already been successfully used for solving specific water management problems in [31,33].…”

Section: Computational Experiment: Description and Mathematical Modelmentioning

confidence: 99%

“…In the last three years, there have been serious problems with ensuring the sustainability of the water supply of this enterprise due to an increase in the salinity of the withdrawn water. The difficulties are strongly aggravated by the fact that this area is characterized by significant diffuse pollution, as is shown in [31][32][33]. Due to these circumstances, a comprehensive survey of the Verkhne-Zyryansk reservoir was carried out in 2020 with the aim of determining the cause of the high salt content in the water taken from the intake heading in winter, which could limit the use of water intake for technical needs.…”

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confidence: 99%

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Peculiarities of Hydrodynamics of Small Surface Water Bodies in Zones of Active Technogenesis (on the Example of the Verkhne-Zyryansk Reservoir, Russia)

Lyubimova

Lepikhin

Parshakova

et al. 2021

Water

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As a rule, large modern industrial complexes are significant water users. This raises the problem of providing them with reliable and sustainable water supply systems. To solve this problem, relatively small, special reservoirs for technical water supply are often created. When creating them, it is a priori assumed that their water masses will be comparatively homogeneous over the aquatorium and throughout the depths, and so, therefore, that their flushing can be successfully used to prevent a possible accumulation of pollutants. The experience of operating such reservoirs in the Verkhnekamsky potassium and magnesium salt development zone in Ural, Russia, has shown that, due to intense diffuse pollution, the reservoirs are characterized by significant vertical non-uniformity, fundamentally altering the hydrodynamics of these water bodies. Based on a series of research, including field observations and computational experiments, the present paper reveals that the vertical non-uniformity of water masses plays a key role in ensuring the sustainability of technical water supply.

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“…The use of selective intake can have a significant positive effect not only in systems of direct-flow drinking water supply, but also in circulating systems of industrial water supply of energy complexes. The paper [12] considers the issues of organizing selective water withdrawal to increase the stability of the water recycling system of the energy complex of PJSC MMK in the hottest limiting seasons of the year.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the conditions for the development of waves at the interface of water masses of different densities

Lyubimova

Parshakova²

2022

J. Phys.: Conf. Ser.

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The influence of differences in the hydrochemical characteristics of the waters of merging rivers on the formation of density currents and the behavior of the density jump layer is studied numerically. The problem is solved for the velocity regimes of the confluent Chusovaya and Sylva rivers (Russian Federation), which are characterized by significantly different salinity values. To study the specific features of layered structures, numerical simulation is performed in the framework of a two-dimensional approach. The calculations are carried out for a section of the Chusovaya River with a length of 300 m, located downstream from confluence of the Chusovaya and Sylva rivers. The Chusovskoy water intake of the city of Perm is located on this site. In the winter-spring season, in this area a regime is established in which a stable layer of density and velocity jumps is observed. With the confluence parameters typical of the winter low water season in the area of the Chusovskoy water intake, 8 km below the confluence point, field measurements detected fluctuations in the concentration and flow velocity in the density jump layer. The two-dimensional numerical simulations performed in the present work also showed the presence of velocity and concentration fluctuations in the jump layer. We found that vortex structures are formed in the jump layer, leading to fluctuations in the concentration in time at a given point and to the formation of a wave structure of the concentration field at different times.

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Application of hydrodynamic modeling in 2D and 3D approaches for the improvement of the recycled water supply systems of large energy complexes based on reservoirs-coolers

Cited by 12 publications

References 15 publications

Energy-Saving Benefits of Air-Source Heat Pump-Assisted Solar Water Heating Systems in Large Stadiums

Energy-Saving Benefits of Air-Source Heat Pump-Assisted Solar Water Heating Systems in Large Stadiums

Peculiarities of Hydrodynamics of Small Surface Water Bodies in Zones of Active Technogenesis (on the Example of the Verkhne-Zyryansk Reservoir, Russia)

Investigation of the conditions for the development of waves at the interface of water masses of different densities

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