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Dynamics of cooling water ( • C) in the underground heating system with parameters: the distance between the pipelines b = 1.5 m; the length of the pipeline l = 600 m
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The waste warm waters from power plants, owing to their temperature regime (25–38°C) and the volumes of discharge, allow for their use for heating of open ground areas in agriculture. Underground heating by such water is a new, special heat and irrigation method which enables not only purposeful regulation of temperature conditions of the crop grow...
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The scientific research has been conducted and the methodological approaches to leachate volume estimation based on improved water-balance calculations; sorptive ameliorant application rate estimation as an integral characteristic of multicomponent value; substantiation of type, construction, and parameters of drainage-accumulation networks have been developed. The technological schemes of land-reclamation measures realization at the stage of project, exploitation, and conservation are worked out and their environmental and economic efficiency has been proved in production conditions.
Developing a predictive system for water deficit analysis in the Black Sea Lowland, especially in climate change, involves integrating various data sources, modeling techniques, and technological tools to forecast water availability and demand. The analysis of the change in moisture deficit in the Kherson region is provided for the period from 1955 to 2022. A description of temperature gradients across the Kherson region is provided. The distribution of precipitation throughout the years in terms of quantity and intensity is provided. As part of the Black Sea Lowland, the Kherson region is critically important for southern Ukraine's agriculture and water security. Given the region's reliance on irrigation and the challenges posed by climate change, developing a predictive system for water deficit analysis is essential. Such a system can help stakeholders make informed decisions to ensure sustainable water management and mitigate the adverse effects of water scarcity.
The changing conditions of crop cultivation and the shift in the use of drained lands necessitate the restoration of drainage systems, expanding their functional tasks, and ensuring water regulation on drained lands. The research focuses on agricultural lands in the farms of LLC “Vasiuty and LLC Bilinsket” in the Kovel district of the Volyn region of Ukraine. Studies conducted on reclaimed lands of the drainage systems “Melnitska” and “Bobrovka” have shown that the implementation of a complex of works to restore open and collector-drainage canals to design specifications, the operation of hydraulic structures, allowed for timely drainage of excess water in the spring period and regulation of soil water regime in the early vegetation period. Maintaining moisture in the active soil layer within close to optimal limits at the end of the vegetation period is possible through the accumulation of additional water reserves in the open channel network. Yield indicators of the studied crops (winter wheat, maize, sunflower) on drained lands have been determined
Summarized data on an important scientific and applied problem, which is coming out in the development and justification of effective ways, technologies, and technical solutions of using warm waters from industry and energy in agriculture, are given. The use of surface heating with heat exchangers significantly affects the temperature regime of the soil and the surface air layer. Field research has established that heating the soil with sleeves-pipelines with a diameter of 10 cm, in which warm water with a temperature of 20...30°C circulates, increases the temperature of the arable soil layer by 12...16°C and the air layer by 7...12 °С, which provides sufficient conditions for the growth and development of plants in early spring. It has been proven that heating by sleeves-pipelines allows the period of active use of the soil to start earlier in the spring by 50-60 days for the soil protected by shelters, which helps to increase the sums of positive temperatures in the arable layer of the soil during the spring period by 1500...2000°С.
