Analysis of the combined cycle indicators of the lithium bromide absorption refrigeration machine with double-stage generation (type 3) depending on the parameters of external sources
https://doi.org/10.25206/2588-0373-2025-9-4-55-62
EDN: YOGUST
Abstract
Absorption refrigeration machines that use the heat of secondary energy resources and renewable energy sources for operation have found wide application in refrigeration systems in the chemical, petrochemical, textile, metallurgy and other industries. Heat conversion in absorption refrigeration machines is accomplished using direct and reverse cycles, so three external heat sources are required to generate cold: a heating source, a source being cooled (the source of the cooled object), and a cooling source. Lithium bromide absorption refrigeration machines are used to generate cold at above-zero temperatures. Many proposed cycles for lithium bromide absorption refrigeration machines have not yet been studied. The paper presents the results of a study of the parameters of a real combined thermodynamic cycle of lithium bromide absorption refrigeration machines with double-stage generation (type 3) depending on the temperatures of external sources. The cycle's efficiency indicators, heat exchanger loads, and the optimal degassing zone for an aqueous lithium bromide solution are determined. The efficiency indicators of the studied cycle, the loads on heat exchangers, and the optimal value of the degassing zone of an aqueous solution of lithium bromide were determined. A study was carried out to determine the influence of the values of incompleteness of solution saturation in the absorber and incompleteness of solution evaporation in the generator on the cycle efficiency.
About the Authors
O. S. Malinina
ITMO University
Russian Federation
Russian Federation
Malinina Olga Sergeevna, Candidate of Technical Sciences, Associate Professor, Associate Professor of the Energy-Efficient Engineering Systems Educational Center
Russia, Saint Petersburg, Kronverkskiy Ave., 49, 197101
A. V. Baranenko
ITMO University
Russian Federation
Russian Federation
Baranenko Aleksandr Vladimirovich, Doctor of Technical Sciences, Professor, Rector’s Advisor
Russia, Saint Petersburg, Kronverkskiy Ave., 49, 197101
Sh. Z. Bayramov
ITMO University
Russian Federation
Russian Federation
Bayramov Shamil Zagidovich, Postgraduate of the Energy-Efficient Engineering Systems Educational Center
Russia, Saint Petersburg, Kronverkskiy Ave., 49, 197101
A. N. Kornilev
ITMO University
Russian Federation
Russian Federation
Kornilev Aleksey Nikitovich, Postgraduate of the Energy-Efficient Engineering Systems Educational Center
Russia, Saint Petersburg, Kronverkskiy Ave., 49, 197101
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For citations:
Malinina O.S., Baranenko A.V., Bayramov Sh.Z., Kornilev A.N. Analysis of the combined cycle indicators of the lithium bromide absorption refrigeration machine with double-stage generation (type 3) depending on the parameters of external sources. Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering. 2025;9(4):55-62. (In Russ.) https://doi.org/10.25206/2588-0373-2025-9-4-55-62. EDN: YOGUST
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