Comparative analysis of air condensers
- Authors: Sayfetdinov A.G.1, Firsova Y.A.1, Dyuzhin D.D.1
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Affiliations:
- Kazan National Research Technological University
- Issue: Vol 113, No 2 (2024)
- Pages: 84-89
- Section: Original Study Articles
- URL: https://journal-vniispk.ru/0023-124X/article/view/314437
- DOI: https://doi.org/10.17816/RF631728
- EDN: https://elibrary.ru/BHZQBH
- ID: 314437
Cite item
Abstract
Background: The refrigeration industry continues to develop new technologies utilized in the daily operations of various businesses and plants. A clear example is the development of microchannel air heat exchangers. They are characterized by high energy efficiency, material savings and low refrigerant consumption. Despite all advantages, microchannel condensers have one major drawback — they are poorly known. Therefore, this paper studies these heat exchangers, including the experimental study of heat exchange parameters and comparative analysis of microchannel and tube plate air condensers.
Aim: To compare microchannel and tube plate condensers in relation to temperature gradient and thermodynamic efficiency of refrigeration units.
Methods: The problems are solved by an experimental study of microchannel and tube plate condensers in the laboratory, experimental data processing, measurement error assessment, and thermodynamic analysis of operating cycles of refrigeration units based on air condensers.
Results: We calculated the temperature gradient, subcooling temperatures of the studied heat exchangers, and refrigerating factors of the units.
Conclusion: The study shows that the difference between condensation and ambient temperatures in a microchannel condenser is smaller than in the tube plate heat exchanger. The microchannel refrigeration unit has a higher effective refrigerating factor.
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##article.viewOnOriginalSite##About the authors
Almaz G. Sayfetdinov
Kazan National Research Technological University
Author for correspondence.
Email: almazy_kstu@mail.ru
ORCID iD: 0009-0000-3192-5848
SPIN-code: 2464-6793
Cand. Sci. (Engineering), Associate Professor
Russian Federation, 68 K. Marx st, (Department of NKTT) Kazan, 420015Yuliya A. Firsova
Kazan National Research Technological University
Email: firsovay@mail.ru
ORCID iD: 0009-0000-9845-8957
SPIN-code: 3938-3442
Cand. Sci. (Engineering), Associate Professor
Russian Federation, 68 K. Marx st, (Department of NKTT) Kazan, 420015Danil D. Dyuzhin
Kazan National Research Technological University
Email: warriorcwz@gmail.com
ORCID iD: 0009-0005-8895-7249
68 K. Marx st, (Department of NKTT) Kazan, 420015
References
- Bulletin of the UCC APIC. Modern technologies used in refrigeration machines. Climate World. 2014;82:94–101. (In Russ.)
- Firsova Yu.A., Saifetdinov A.G. Calculations on refrigeration equipment and technology. Kazan: KNITU; 2020. (In Russ.)
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