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“Green structures” for effective rainwater management on roads

Hlushchenko Roman, Tkachenko Tetiana, Mileikovskyi Viktor, Kravets Vasyl, Tkachenko Oleksii

Production Engineering Archives

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2022

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Vol. 28, Iss. 4

295--299

EN

Rainwater management is one of the important problems of cities. At very strong downpours, storm sewer systems may not capture the rainwater, which floods pavements and roadways. The water flushes fuel and oil traces after vehicles, fallen debris, and other pollutants, which will be moved to the ground, ponds, rivers, seas, etc. In past, the problems were solved using engineering approaches – a set of rainwater receivers, a duct network, and at best, wastewater treatment plants. Now, the sponge city concept is a better solution that uses a biotechnological way for throttling water flows, drainage, and purifying them. The work aims to improve the design of roads to fully absorb rainwater from them with maximum convenience for road users. We propose a design of roads using special “green structures” – rain-garden bands along the sides of roadways. We tested its ability of water capturing on the example of Kyiv city by matching the ability with the strongest precipitation observed. In addition, the proposed plants can extinguish the energy of bouncing cars during road accidents for the protection of pavements.

2

The selection of plantings in the process of reclamation and revitalization of post-war damage to the natural environment in the Donbas area

Tkachenko Tetiana, Mileikovskyi Viktor, Ujma Adam, Tkachenko Oleksii

Budownictwo o Zoptymalizowanym Potencjale Energetycznym

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2022

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Vol. 11

163--170

EN

People modify 56% of the Earth’s land. The world trend is changing from rapacious to considered influence such as green construction/production. Nevertheless, the terroristic war of the Russian federation against Ukraine causes the chaotic destruction and snowballing emissions from shell bursts and fires. Reclamation of land should attempt to repair the hugely dangerous influence of this, especially in the temporarily annexed lands of Ukraine. Donbas was one of the most stressed regions due to active mining and other industries, and contained more than 38% of Ukrainian damaged lands. The war deepens the situation. The most natural reconstructive measure is greening. The authors analysed the requirements for greening to gain the maximum benefits. Enduring and effective plant assortments were proposed for the region. For sanitizing the environment, experiments were performed with phytoncide activity using a photographic paper method. It was found and recommend that new phytoncide plants - Japanese quince (Chaenoméles japónica) and barberry (Bérberis) - were most effective.

3

Simulation of the efficiency of improved regenerative decentralised ventilators Vents Twin Fresh

Mileikovskyi Viktor, Vakulenko Daria

Budownictwo o Zoptymalizowanym Potencjale Energetycznym

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2020

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Vol. 9 Nr 1

61--67

EN

The work is devoted to modelling Twin Fresh ventilator efficiency. The main aim is to simulate heat exchanged in a heat regenerator in variable conditions. The mathematical model is based on Navier-Stokes equations for laminar flow. The model is designed to achieve an adequate time for calculation and sufficient precision. The results show high efficiency of heat recovery in the order of 97.4%.

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Field study of air quality improvement by a “Green Roof” in Kyiv

Tkachenko Tetiana, Mileikovskyi Viktor, Ujma Adam

System Safety : Human - Technical Facility - Environment

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2019

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Vol. 1, nr 1

419--424

EN

Currently, a very big problem of cities in Europe and the world is air pollution with combustion products of car fuels, generation of heat and electricity. These impurities affect the microclimate of cities significantly. Pollution not only affects the area outside buildings, but getting into their interior through ventilation systems, which has an adverse effect on the indoor environment of buildings. High concentrations of CO 2, cause a weakening of concentration in working people, which affects the deterioration of safety and work efficiency. For assessing air quality improvement on “green roofs”, a field study of CO 2 content has been carried out on the “green roof” of a four-storey building, on a completely identical non-greened building, and on a highway with high-density traffic near them in Kiev. It was found that greening the roof significantly reduces the CO 2 content from 501 ppm on the road and 452 ppm on the roof without protection to 410-415 ppm. It improves the conditions in which people work and rest.

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Research of deformation of valve throttling characteristics under gravitational influence in hydraulic systems

Mileikovskyi Viktor

Budownictwo o Zoptymalizowanym Potencjale Energetycznym

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2019

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Vol. 8 Nr 1

123--130

EN

Control valve operation influences the efficiency of hydraulic systems. The deformation of the throttling characteristics in control valves by hydraulic resistances in a single regulated circuit is well studied. Nevertheless, there are other significant reasons for the deformation. This paper will focus on gravitational influences. The results show significant deformations. They are described by multiplying the valve authority by 0.6-1.7.

PL

Praca zaworów regulacyjnych wpływa na sprawność systemów hydraulicznych. Odkształcenie charakterystyki dławienia zaworów sterujących spowodowane oporem hydraulicznym w jednoobwodowym obiegu regulowanym było przedmiotem wielu badań, tym niemniej istnieją jeszcze inne istotne przyczyny tego odkształcenia. W artykule analizowano przede wszystkim wpływy grawitacyjne. Analiza wykazała, że wpływ ten skutkuje znaczącymi deformacjami charakterystyki, co można opisać, mnożąc autorytet zaworu przez współczynnik 0,6-1,7.