Issue №: 3 (130)
The journal solves the problems of creation and improvement of machinery and technologies for agriculture: 131 - Applied Mechanics, 132 - Materials Science, 133 - Industrial Engineering, 141 - Power Engineering, Electrical Engineering and Electromechanics, 208 - Agricultural Engineering
INVESTIGATION OF THE EFFECT OF STRUCTURAL PARAMETERS OF AN INDIRECT EVAPORATIVE HEAT EXCHANGER ON AIR COOLING EFFICIENCY
Vitalii YAROPUD – Doctor of Technical Sciences, Associate Professor of the Department of Agricultural Machinery and Equipment, Dean of the Faculty of Engineering and Technology of Vinnytsia National Agrarian University(St. Soniachna, 3, Vinnytsia, Ukraine, 21008, e-mail: yaropud77@gmail.com, https://orcid.org/0000-0003-0502-1356).
The article is devoted to investigating the influence of the structural parameters of an indirect evaporative heat exchanger on the efficiency of air cooling in microclimate control systems for livestock buildings. The relevance of the study is driven by increasing thermal loads during the summer period, higher requirements for maintaining comfortable conditions for animals, and the need to reduce energy consumption associated with air conditioning and ventilation processes in the agro-industrial sector.
The feasibility of using indirect evaporative cooling systems as an energy-efficient alternative to conventional compressor-based refrigeration units is substantiated. Such systems allow a reduction in the temperature of supply air without increasing its moisture content. A laboratory-scale experimental prototype of an indirect evaporative heat exchanger with a cross-flow air movement configuration was designed and manufactured. Experimental investigations were carried out by varying the inlet air temperature, absolute humidity, and airflow rate, as well as for two structural configurations of the heat and mass exchanger, featuring identical and different interchannel opening areas.
Based on statistical processing of the experimental data, second-order regression equations were obtained for the outlet temperature of the primary air stream, the thermal efficiency coefficient, and the effective cooling capacity of the heat exchanger. The adequacy of the developed mathematical models was confirmed using the Cochran and Fisher criteria, as well as by high correlation coefficients between experimental and calculated results.
It was established that the use of different interchannel opening areas intensifies heat and mass transfer processes, reduces the outlet air temperature, and increases thermal efficiency and effective cooling capacity compared to the configuration with identical opening areas. Rational operating modes of the heat exchanger were determined in terms of minimizing outlet air temperature and maximizing energy efficiency. The obtained results can be applied in the design and optimization of microclimate systems for livestock buildings and in the development of automatic control algorithms for air cooling processes.
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About the journal
G8 – Materials Science
G9 – Applied Mechanics
G10 – Metallurgy
G11 – Mechanical Engineering (by specializations)
The journal "Engineering, Energy, Transport AIC" is indexed according to the following databases and catalogs:
The All-Ukrainian scientific journal “Technology, energy, agriculture transport AIC” is an open-access scientific publication that publishes the results of original research, theoretical and applied developments, as well as scientific papers in the fields of engineering sciences, energy systems, and transport technologies of the agro-industrial complex.
The main objective of the scientific journal “Technology, energy, agriculture transport AIC” is to disseminate the results of modern scientific research and to promote the development of technical, energy, and transport solutions for the agro-industrial complex through the publication of scientific materials characterized by scientific novelty and practical significance in the field of design and modernization of machinery, equipment, and technologies.
The journal’s activities are focused on supporting the development of engineering science, stimulating the implementation of innovative approaches into industrial practice, as well as ensuring effective exchange of scientific achievements among researchers, educators, engineers, and other specialists in relevant fields.
Objectives of the Journal
To achieve its defined objective, the journal ensures the implementation of the following key tasks:
· publication of the results of fundamental and applied research covering the fields of applied mechanics, mechanical engineering, materials science, energy systems, electrical engineering, electromechanics, and transport systems of the agro-industrial sector;
· promotion of the implementation of advanced technical and technological developments aimed at improving the efficiency of machinery, equipment, and production processes;
· creation of conditions for active scientific exchange among research institutions, higher education institutions, industrial enterprises, and other interested organizations;
· support for the development of interdisciplinary research and expansion of cooperation among specialists in various fields of science and technology;
· promotion of the improvement of the scientific and technical level of research related to the design, modernization, and operation of technical equipment used in agro-industrial production;
· dissemination of information on modern achievements in science and technology and the implementation of innovative technologies in the fields of technical support, energy, and transport;
· development of a scientific information environment that facilitates effective scientific communication and the integration of national research into the international scientific community.
Publication frequency: 4 issues per year
Languages of publication: Ukrainian, English
Editor-in-Chief: Vitalii YAROPUD
State Registration: Decision of the National Council of Ukraine on Television and Radio Broadcasting № 1337 and № 1180. Media Identifier: R30-05173
EDRPOU Code: 00497236
Publisher ROR: https://ror.org/05m3ysc06
Publisher DOI Prefix: 10.37128
Technology, energy, agriculture transport AIC is a scholarly professional journal with a long-standing history and stable academic tradition, reflecting the evolution of engineering and technical sciences within the agro-industrial sector of Ukraine.
The journal was founded in 1997 under the title Bulletin of Vinnytsia State Agricultural Institute. According to the Resolution of the Presidium of the Higher Attestation Commission of Ukraine dated September 11, 1997, the publication obtained the status of a professional scientific journal, which enabled the publication of the main results of doctoral and candidate dissertations in technical sciences. From its inception, the journal positioned itself as an academic platform for addressing current issues of mechanization, electrification, and technical support of agricultural production. During 2001–2014, the journal was published under the title Proceedings of Vinnytsia National Agrarian University. Series: Technical Sciences (State Registration Certificate of Print Media KV No. 16644-5116 PR dated April 30, 2010). Throughout this period, a systematic approach to the selection and peer review of scientific manuscripts was established, the thematic scope of publications was expanded, and continuity of scientific directions as well as the development of sectoral engineering schools was ensured. Since 2015, the journal has been published under its current title, Technology, energy, agriculture transport AIC (State Registration Certificate No. 21906-11806 R dated March 12, 2016). The change of title reflected the expansion of the journal’s thematic coverage and its orientation toward interdisciplinary research in mechanical engineering, energy systems, electrical engineering, transport technologies, automation, and digital solutions for the agro-industrial complex.
