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Journal articles on the topic 'Refrigeration machines'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Yermolenko, M. V., and A. M. Sovetkazyeva. "ANALYSIS OF THE CYCLE OF A STEAM COMPRESSION REFRIGERATING MACHINE WHEN WORKING ON VARIOUS REFRIGERATING AGENTS." Bulletin of Shakarim University. Technical Sciences 1, no. 2(14) (2024): 334–41. http://dx.doi.org/10.53360/2788-7995-2024-2(14)-41.

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Currently, more and more attention is being paid to the problem of effective application of ozone-safe refrigerating agents used in the cycles of vapor-compression refrigeration machines. This has become especially important when a number of ozone-safe refrigeration agents have a large global warming index, which has recently been unacceptable with respect to the environment worldwide. Therefore, conducting studies to evaluate the performance of new refrigerating agents as a result of replacing some refrigerating agents with others is an urgent task. At the same time it is necessary to try to

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2

KHOROLSKY, Valentyn, Oleksandr OMELCHENKO, Yurii KORENETS, Volodymyr HONCHARENKO, and Yulіya PETRUSHYNA. "REFRIGERATION SUPPLY OF REFRIGERATION CHAMBERS OF SMART INDUSTRIAL REFRIGERATORS WITH NEURON-FUZZY CONTROL SYSTEMS OF FOOD FREEZING PROCESSES." Herald of Khmelnytskyi National University 303, no. 6 (2021): 264–71. http://dx.doi.org/10.31891/2307-5732-2021-303-6-264-271.

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A set of theoretical, methodological and practical problems associated with the creation of an intelligent complex for adaptive control of microclimate parameters, the processes of freezing food products in the refrigerating chambers of an industrial refrigerator has been studied. Accordingly, for this task, the structure of the neural network controller of the refrigeration capacity of refrigeration machines of the process control system of an industrial refrigerator was developed, in which information enters the database, a neural network with a learning module and turns into decision-making

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3

Lebedev, B., L. Knaub, E. Lebedeva, and E. Pavlishko. "AN EXPERIMENTAL STUDY OF THE AMMONIA HERMETIC SMALL REFRIGERATION MACHINE." Аграрний вісник Причорномор'я, no. 94 (December 25, 2019): 139–54. http://dx.doi.org/10.37000/abbsl.2019.94.20.

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The article focuses on the study of the design parameters of small refrigerating machines. This article shows practical studies of the dependence of the energy parameters of the refrigerating machine on its design features.In particular, the dependence of the coefficient of performance upon the superheating of steam at the suction in the compressor was studied, and preventing method of such overheating for small refrigerating machines was proposed. At the second stage the possibility of using a regenerative heat exchanger in an ammonia refrigerating machine was examined. The advantages of its

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KHOROLSKY, Valentyn, Yurii KORENETS, Oleksandr OMELCHENKO, and Volodymyr HONCHARENKO. "REFRIGERATION MACHINES IN THE SYSTEM OF CONSISTENT MANAGEMENT OF ELECTRIC ENERGY CONSUMPTION OF THE COMPLEX ENTERPRISE-INDUSTRIAL REFRIGERATOR." Herald of Khmelnytskyi National University. Technical sciences 313, no. 5 (2022): 200–212. http://dx.doi.org/10.31891/2307-5732-2022-313-5-200-212.

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The strategy of the coordinated management of electric consumption of the industrial refrigerator of the enterprise of a food complex on production of foodstuff is offered. The structure of the integrated intelligent power management system of the refrigerator enterprise has been developed, in which the systems of automated control of electricity metering and control of the refrigeration trajectory of refrigeration chambers are built-in. The system uses a situation center, industrial Internet of Things (IIoT), digital platform “FOOD” with software (freezing of food products). According to the

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5

Petushenko, S. "Cooling System for Primary Low Temperature Processing and Storage of Grains of Small Frachioned." Refrigeration Engineering and Technology 53, no. 5 (2017): 52–58. http://dx.doi.org/10.15673/ret.v53i5.852.

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The analysis of different aspects of grain refrigeration on elevators of Ukraine, Commonwealth of Independent States (CIS) and in the world is carried out. The advantage of the refrigeration method is shown concerning the quality and of energy conservation. A comparative analysis of various types of refrigeration machines operating on ozone-friendly refrigerants has been carried out. It is shown that it is more profitable to use heat that is worked out from refrigerating machines.

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6

Milovanov, V. I., and D. O. Balashov. "INFLUENCE OF NANOPARTICLES ON THE QUALITY OF WORK OF HEAT EXCHANGERS OF A SMALL REFRIGERATOR." Key title: Zbìrnik naukovih pracʹ Odesʹkoï deržavnoï akademìï tehnìčnogo regulûvannâ ta âkostì, no. 1(18) (2021): 23–30. http://dx.doi.org/10.32684/2412-5288-2021-1-18-23-30.

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In recent years, a new direction of energy saving in small refrigeration machines has been widely studied in the world, namely the use of new classes of substances as a working fluid. Studies of the thermophysical properties of colloidal solutions of nanoparticles with oils and refrigerants show the high prospects for the use of this class of substances in refrigeration. Therefore, the task of studying heat exchangers operating as part of small refrigeration machines on nanofluids seems relevant. The article provides information on the prospects for the use of nanoparticles in heat exchangers

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7

Shestopalov, K. O., O. Ya Khliyeva, V. O. Ierin, O. I. Konstantinov, M. N. Kozminykh, and O. M. Stukalenko. "ANALYSIS OF THE ENERGY EFFICIENCY OF TECHNICAL SOLUTIONS OF THE HEAT-DRIVEN SHIP EJECTOR REFRIGERATION MACHINE FOR OBTAINING SUB-ZERO TEMPERATURES." Energy Technologies & Resource Saving 80, no. 3 (2024): 108–18. http://dx.doi.org/10.33070/etars.3.2024.07.

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Marine refrigeration machines are responsible for large amounts of electricity consumption, as well as direct emissions of high global warming potential (GWP) refrigerants, so they need to be gradually upgraded. The possibility of using a ship ejector refrigeration machine with two-stage compression, consuming waste heat, as well as a cascade compression-ejector refrigeration machine to obtain the temperatures of minus 28–27 °C was analyzed. It was shown that the traditional indicator of the efficiency of heat-driven refrigeration machines COPtherm ot be recommended for the selection of energy

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8

Abrori, Muhammad Zaki Latif, Bobby Demeianto, Mula Tumpu, and Muhammad Sandri. "DEVELOPMENT OF STANDARD OPERATING PROCEDURES FOR OPERATING REFRIGERATION MACHINERY ON FISHING VESSELS." Aurelia Journal 6, no. 1 (2024): 123. http://dx.doi.org/10.15578/aj.v6i1.13989.

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Refrigeration machines in fishery companies are widely used to maintain the quality of seafood products to keep them fresh. These machines are quite complex, so operating them correctly is crucial, as fatal operational errors can lead to the damage of the refrigeration equipment. The absence of written SOPs has the potential for non-standardized operations. Therefore, this article aims to develop Standard Operating Procedures (SOPs) for operating refrigeration machines on fishing vessels. To achieve this goal, data from the refrigeration system is used, and competent machine crew members are i

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9

Kirillov, N. G. "Stirling Refrigerating Machines — Promising Equipement for Moderate Refrigeration." Chemical and Petroleum Engineering 41, no. 7-8 (2005): 372–76. http://dx.doi.org/10.1007/s10556-005-0123-5.

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10

Shamarov, M. V., E. G. Stepanova, A. V. Kolinko, and A. M. Shamarov. "Prospects for the use of a membrane refrigeration unit for the production of cold as an alternative to absorption." Herald of Dagestan State Technical University. Technical Sciences 50, no. 4 (2024): 26–36. http://dx.doi.org/10.21822/2073-6185-2023-50-4-26-36.

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Objective. The purpose of the study is to determine the prospects for using a membrane refrigeration unit for the production of cold as an alternative to absorption. Method. The study was carried out using a numerical experiment and verification of the results obtained on an experimental bench. Result. An analysis was made of the use of a traditional absorption refrigeration machine and a membrane refrigeration machine from the point of view of energy efficiency and the number of working elements. Presented for comparison are methods for calculating the separation process of the “absorbent-ref

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11

Bogatyreva, E. V. "Systems approach to modeling recycling refrigeration machines." Transactions of the Krylov State Research Centre S-I, no. 1 (2021): 130–31. http://dx.doi.org/10.24937/2542-2324-2021-1-s-i-130-131.

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Refrigeration equipment is not provided on many small fishing vessel projects. It is proposed to install absorption refrigerating machines (ABRM) as refrigeration units for small vessels of the fishing fleet, the working medium of which is a water ammonia mixture. Such machines can operate by using the heat of exhaust gases, that is, receive energy from internal combustion engines. Ship power plants, unlike stationary ones, have characteristics and properties inherent only to them. In modeling, it is proposed to use a systematic approach to optimize the parameters. The principle of a systemati

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12

Baikov, I. R., V. E. Burdygina, and G. K. Dunyushkin. "SELECTION OF THE OPTIMAL HEATING COOLANT FOR ARM DEPENDING ON THE TECHNICAL CONDITIONS OF THE OIL AND GAS ENTERPRISE." Petroleum Engineering 21, no. 1 (2023): 147–52. http://dx.doi.org/10.17122/ngdelo-2023-1-147-152.

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Generation of cold is great demand process for many enterprises of the oil and gas industry. With large capacities of the enterprise, deeper cooling of heat carriers is required in chemical and petrochemical industries, metallurgy, compressor stations, etc. In administrative buildings and workshops located on the sites, it is required to create comfortable conditions in the buildings for the people who are there. In this regard, the demand for refrigeration units is increasing. Until recently, steam compression refrigerating machines were the market leader in refrigeration units. However, thei

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13

Korotkiy, Igor' Alekseevich, Evgeniy Nikolaevich Neverov, Il'ya Aleksandrovich Prib, Maksim Yur'evich Mokrushin, Dmitriy Ivanovich Goleshov, and Vladimir Gennad'evich Lonshakov. "Proektnye resheniya skhemy kholodil'noy mashiny s utilizatsiey teploty kondensatsii." Refrigeration Technology 109, no. 6 (2020): 30–33. http://dx.doi.org/10.17816/rf104056.

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Refrigerating units are widely used in various sectors for artificial cold generation. While maintaining low temperatures, refrigerating machines produce a large amount of heat at cooling and condensation of a refrigerant on the high pressure side. The heat produced is not used in any way and is emitted into the environment. The article offers a circuit of a refrigerating machine that makes it possible to utilize the condensation heat and to transfer it to various consumers of heat energy at the facilities, thereby reducing the heat emission into the atmosphere and increasing technological cap

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14

Bukin, Vladimir Grigorievich, Alexey Vasilievich Ezhov, and Aleksander Ivanovich Andreev. "Temperature-entropy diagrams for calculating cycles of refrigerating machines using refrigerant mixtures." Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies 2020, no. 4 (2020): 79–86. http://dx.doi.org/10.24143/2073-1574-2020-4-79-86.

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The article represents the advantages and disadvantages of refrigeration machines operating on non-azeotropic refrigerant mixtures. There has been illustrated their specific feature in comparison with pure substances: they are non-isothermal during phase transitions. It can be effective when cooling or heating flows that significantly change the temperature, and ineffective when working with volumes, where it is necessary to maintain a constant temperature. In the first case there takes place a decrease in the internal irreversibility of heat transfer processes in evaporators and condensers; i

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15

Siahaan, Juniawan Preston, Rizqi Ilmal Yaqin, Bobby Demeianto, et al. "Performance test of small fishing vessel refrigeration machine for fish storage." Jurnal Polimesin 21, no. 6 (2023): 613. http://dx.doi.org/10.30811/jpl.v21i6.4165.

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The refrigeration system in the fishing process is important for maintaining the quality of the catch. However, the design of small-scale refrigeration machines is still not common, so it is an interesting study. Therefore, this study aimed to evaluate the design of small-scale fishing vessel refrigeration machines. Field studies are needed in machine manufacturing to observe the components required to match the refrigeration machine components onboard fishing vessels. This uses a direct observation method to determine the components of the refrigeration machine on the ship. Furthermore, the p

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16

Danilishin, A. M., and Y. V. Kozhukhov. "Centrifugal Compressors Gas-Dynamic Characteristics Influence on the Refrigerating Machines Efficiency." Problems of the Regional Energetics, no. 2(58) (May 2023): 72–80. http://dx.doi.org/10.52254/1857-0070.2023.2-58-07.

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The article is devoted to the study R134a refrigerating machine efficiency and consisting of a centrifugal compressor, a condenser, a temperature-regulating valve and an evaporator. The main purpose of the work is to analyze the centrifugal compressor gas dynamic characteristics effect on the refrigeration machine vapor-compression cycle efficiency. This goal is achieved through the study by actual working process numerical experiment in the refrigeration machine centrifugal compressor with an idealized process for other elements. The object of the study are the refrigeration machine character

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17

Радченко, Андрій Миколайович, Дмитро Вікторович Коновалов, Сергій Георгійович Фордуй, Роман Миколайович Радченко, Сергій Анатолійович Кантор та Віктор Павлович Халдобін. "Аналіз ефективності ежекторних холодильних машин на різних холодоагентах". Aerospace technic and technology, № 4 (27 серпня 2021): 40–47. http://dx.doi.org/10.32620/aktt.2021.4.06.

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Modern heat-using ejector refrigeration machines used in heat recovery systems for power plants based on gas turbine engines and internal combustion engines have many advantages over absorption refrigeration machines: smaller dimensions and weight; the ability to obtain lower temperatures. However, they are inferior in energy efficiency, and the thermal coefficient is much lower and can be 0.2…0.4. The efficiency of such refrigeration machines largely depends on the choice of the working fluid (refrigerant). Hence the need to choose a refrigerant that would provide the maximum heat factor, and

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18

Shamarov, M. V., V. I. Aleshin, I. A. Kalmykov, and A. M. Shamarov. "Improving the efficiency of power transformers by intensifying their cooling during operation." Herald of Dagestan State Technical University. Technical Sciences 52, no. 1 (2025): 31–38. https://doi.org/10.21822/2073-6185-2025-52-1-31-38.

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Objective. The aim of the study is to develop recommendations for optimizing cooling systems for power transformers in order to increase their efficiency and reduce losses during electric power transformation.Method. The study included a thermodynamic and comparative analysis of existing methods of cooling electric transformers in order to identify the advantages and disadvantages of cooling systems.Result. Various cooling schemes and transformation heat recovery systems are presented. It is substantiated that there are low-temperature systems that can significantly improve the technical chara

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19

Porutchikov, Artem Frolovich, and Dmitriy Pavlovich Trubin. "Low temperature vacuum sublimation refrigerators on carbon dioxide as working fluid." MATEC Web of Conferences 324 (2020): 02004. http://dx.doi.org/10.1051/matecconf/202032402004.

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The paper presents the results of theoretical and experimental analysis of a vacuum-freeze-drying refrigeration machine based on carbon dioxide. Such refrigeration machines can be equipped with refrigerators for the needs of medicine, where low temperatures are widely in demand in the range from minus 80 degrees Celsius to minus 130 degrees Celsius. The problem of developing alternative refrigeration machines is dictated by modern environmental requirements for working substances, which are gradually being tightened and soon the use of familiar freons will become impossible. For the air condit

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20

M. Sugiri, Indra Widarmadi, and Parman Sinaga. "Performance analysis of refrigeration system with 1 pk compressor based on evaporator temperature variation." JTTM : Jurnal Terapan Teknik Mesin 6, no. 1 (2025): 137–44. https://doi.org/10.37373/jttm.v6i1.1566.

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Refrigeration machines or also called cooling machines are machines that can cause the refrigeration effect, while refrigerants are substances used as working fluids in the heat absorption process. Refrigeration is a process of absorbing heat from a substance or product so that its temperature is below the ambient temperature. The purpose of the study was to analyze the performance of the refrigeration machine and the research method used was the experimental method by testing a 1 PK cooling machine using R134a refrigerant with temperature variations in the evaporator room. The results of this

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Trokoz, Ya Ye, P. O. Barabash, P. P. Kudelya, and O. B. Golubev. "Development and research of refrigeration cycle with biagent jet compressor." KPI Science News, no. 4 (February 14, 2022): 77–82. http://dx.doi.org/10.20535/kpisn.2021.4.252054.

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Background. Currently, in the cycles of steam-ejector refrigeration machines (SERM) are used monoagent jet compressors, the working body in which is water. Despite their low efficiency, SERM have a number of advantages over refrigeration machines that usemechanical compressors: low cost, ease of manufacture and reliability. The use of SERM is largely limited by the inability of these installations to reach temperatures below 0 °C. This limitation can be overcome by applying a fundamentally new steam compressioncycle using a bioagent (water-freon) jet compressor (BAJC).Objective. The purpose of

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Fot, A. N., and D. K. Melnikov. "Features of calculation of refrigerating machines with combined cooling of condensers taking into account climatic and economic factors." Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering 5, no. 4 (2021): 17–23. http://dx.doi.org/10.25206/2588-0373-2021-5-4-17-23.

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A method for calculating refrigerating machines with a condensation unit implementing water and air cooling methods is proposed taking into account the economic and climatic features of the calculated region. Since economic and climatic factors have different degrees of influence on the energy efficiency and efficiency of refrigerating machines over the entire range of changing temperatures of cooling media, the results of calculating refrigerating machines according to the proposed methodology allow making informed decisions about the layout of the condensation unit both at the design stage a

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23

Aldamatov, N. E., S. A. Bredihin, and E. N. Neverov. "Cooling of animal products in an air-gas environment of carbon dioxide." Vestnik MGTU 27, no. 4 (2024): 611–20. https://doi.org/10.21443/1560-9278-2024-27-4-611-620.

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In our country, as well as throughout the world, special attention is paid to finding more modern, energy-efficient and environmentally friendly methods of cooling food products, including animal ones. The basis of most technological processes of refrigeration treatment is working fluids, which can be natural or synthetic substances. Due to the negative impact of synthetic raw materials on the environment, preference is given to substances of natural origin. The greatest interest in the last twenty years in the world community of refrigeration equipment and technology is shown to carbon dioxid

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Vicatos, George, and E. Krafft. "Comparison between two different solution-pumping methods in absorption refrigeration machines." Journal of Energy in Southern Africa 21, no. 3 (2010): 16–22. http://dx.doi.org/10.17159/2413-3051/2010/v21i3a3257.

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This paper presents a pumping method in absorp-tion refrigeration where a vapour-driven pump is to replace the electricity-driven pump. The vapour pump is driven by a fraction of the generator’s hot, high-pressure, vapour mixture. The refrigerator is thus exclusively heat-powered and rendered inde-pendent of the availability of electricity as the main energy source. The design and operation of the vapour pump is presented. The results obtained by a computer simulation program show a decrease in performance (COP), which is confirmed by the data obtained from a 1 kW cooling capacity refrigerator

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25

Tatarenko, J. V., V. M. Mizin, and N. O. Rachkovskiy. "PREDICTION OF THE USE OF REFRIGERANTS IN LOW-TEMPERATURE EQUIPMENT." Herald of Dagestan State Technical University. Technical Sciences 46, no. 3 (2019): 32–42. http://dx.doi.org/10.21822/2073-6185-2019-46-3-32-42.

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Objectives Determination of prospects for the use of various refrigerants, as well as the potential for their interchangeability in low-temperature equipment in accordance with the conditions of the Kigali Amendment to the Montreal Protocol on substances that deplete the ozone layer.Method A computer simulation of heat exchange processes based on generally accepted dependencies was carried out and data for the construction of refrigeration machine elements obtained.Results R717 and R410A are recommended for use in medium- and low-temperature machines. R32 refrigerant is used in high-temperatur

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KHOROLSKY, Valentyn, Yurii KORENETS, and Yulіya PETRUSHYNA. "THEORETICAL FOUNDATIONS FOR ASSESSING THE RELIABILITY OF REFRIGERATION MACHINE EQUIPMENT ON THE BASIS OF THE NEURO-FUZZY METHOD FOR IDENTIFYING THEIR STATE." Herald of Khmelnytskyi National University. Technical sciences 307, no. 2 (2022): 103–9. http://dx.doi.org/10.31891/2307-5732-2022-307-2-103-109.

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In order to design modern smart enterprises such as industrial refrigerators with a high level of reliability of their operation while maintaining the proper quality of cooling, freezing and storage of various types of products, the article analyzes the current level of safety and time to failure of equipment for refrigeration equipment for refrigeration of industrial refrigerators and system analysis of the technical system of equipment of refrigeration machines to determine the requirements for the system for assessing the level of safety of equipment of enterprises – industrial refrigerator

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Neverov, Evgeniy N., Igor A. Korotkiy, Pavel S. Korotkih, and Maksim Y. Mokrushin. "Improving the Environmental Efficiency of Engineering Systems Operating under the Scheme of Secondary Use of Thermal Energy." International Journal of Heat and Technology 40, no. 6 (2022): 1533–39. http://dx.doi.org/10.18280/ijht.400623.

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Refrigerating machines are used in many areas to produce artificial cold. In the course of its operation, each refrigeration unit generates a lot of heat by compressing the refrigerant, which is not used in any way in the future, and during condensation is released into the environment in the form of water vapor. The use of chlorine-containing refrigerants destroys the ozone layer. To reduce environmental damage, a water reuse system was created and a technology for using low-temperature heat that is released during the operation of the refrigeration machine was developed. This paper offers va

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A, Gujar. "Applications of Refrigeration Machines: A Comprehensive Review." Research and Reviews: Journal of Mechanics and Machines 7, no. 1 (2025): 9–12. https://doi.org/10.5281/zenodo.14760262.

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<em>Refrigeration machines play a pivotal role in a wide range of industries, encompassing food preservation, medical applications, chemical processing, and energy systems. This paper provides a detailed review of their applications, focusing on recent technological advancements and their implications on efficiency, environmental sustainability, and operational costs. From cryogenic systems to large-scale industrial cooling, the study explores the integration of smart technologies, such as IoT-enabled monitoring and eco-friendly refrigerants, in modern refrigeration machines. Furthermore, chal

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Saakian, Alexander. "Improving energy efficiency of cold storage." АгроЭкоИнфо 3, no. 45 (2021): 12. http://dx.doi.org/10.51419/20213312.

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Saving resources and energy in refrigeration systems is one of the main vectors of development of the national economy of our country. One of the promising ways to solve these problems is the use of energy efficient refrigeration machines. The article discusses the main issues on the organization of energy efficient storage. In particular, the main recommendations for the design of the storage building are given; an analysis of the energy efficiency of refrigeration machines with and without VFD (variable frequency drive) is given; the main aspects of the operation of the condenser of the refr

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Pronin, V. A., A. V. Kovanov, V. A. Tsvetkov, E. N. Mikhailova, and P. A. Belov. "To the issue of optimising the performance of a scroll compressor as part of a CO2 booster refrigerating machine in order to increase its efficiency." Herald of Dagestan State Technical University. Technical Sciences 50, no. 1 (2023): 42–52. http://dx.doi.org/10.21822/2073-6185-2023-50-1-42-52.

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Objective. With the decreasing use of refrigerants with a high global warming potential, increasing the efficiency of refrigeration machines using natural working fluids is a very urgent task. The CO2 booster refrigerant cycle may be optimal for the fields of commercial refrigeration, climate engineering and heat pumps, but needs to be adapted to regions with hot climates. The purpose of the study is also to systematize possible ways to improve the spiral technology, as a guarantee of increasing the efficiency of booster refrigeration machines.Method. Such solutions have already been tested by

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Osadchuk, Eugeniy, and Oleksandr Titlov. "ANALYSIS OF THE CLIMATIC FEATURES OF THE REGIONS OF THE PRIMARY APPLICATION OF THE SYSTEMS FOR PRODUCING WATER FROM THE ATMOSPHERIC AIR." ScienceRise 4 (August 31, 2020): 3–9. http://dx.doi.org/10.21303/2313-8416.2020.001390.

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The object of research is the thermal and humidity processes occurring during artificial cooling of atmospheric air to the dew point temperature in the evaporators of refrigeration machines of the compression and absorption type. This study solves the problem of finding energy efficient heat and humidity modes for cooling atmospheric air to the dew point temperature in regions with a shortage of water resources and high solar installations. It is shown that practically in all considered climatic zones with a shortage of water resources, the process of obtaining water from atmospheric air is mo

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Huda, Ahmad Akromul, Karyanik Karyanik, and Earlyna Sinthia Dewi. "EFEK VARIASI BEBAN PENDINGINAN TERHADAP COEFFICIENT OF PERFORMANCE (COP) MESIN PENDINGIN PADA BOX COOLER ALAT DISTILASI." Jurnal Agrotek Ummat 8, no. 2 (2021): 110. http://dx.doi.org/10.31764/jau.v8i2.5239.

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Refrigerator has been widely used by the community and can be found in almost every shop, office building and household. The application of refrigeration machines can also be developed in many other equipment and machines, one of which is in the distillation apparatus. Distillation is a method of separating two substances. A distillation machine using a cooling machine in the condenser will be very helpful, especially for distillation. This study aims to determine the effect of cooling on the performance of the cooling machine. Cooling engine performance coefficient of achievement (COP). Load

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Коновалов, Дмитро Вікторович, Роман Миколайович Радченко, Сергій Георгійович Фордуй, Фелікс Володимирович Царан, Віктор Павлович Халдобін та Артем Вікторович Грич. "Моделювання та програмний комплекс для дослідження функціонування ежектора в змінних режимах". RADIOELECTRONIC AND COMPUTER SYSTEMS, № 3 (5 жовтня 2021): 37–47. http://dx.doi.org/10.32620/reks.2021.3.04.

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One of the current directions of development of modern energy-saving and energy-efficient technologies for ship and stationery (including municipal) energy is the use of ejector refrigeration machines, which can be used for air conditioning systems together with an absorption refrigeration machine (cascade cycle) or vapor compressor refrigeration machine as part of cogeneration or trigeneration units. Such circuit solutions can be used together with ensuring the rational organization of work processes in the main elements of the refrigeration machine, in particular in the jet device - ejector,

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Eugeniy, Osadchuk, and Titlov Oleksandr. "ANALYSIS OF THE CLIMATIC FEATURES OF THE REGIONS OF THE PRIMARY APPLICATION OF THE SYSTEMS FOR PRODUCING WATER FROM THE ATMOSPHERIC AIR." ScienceRise, no. 4 (August 31, 2020): 3–9. https://doi.org/10.21303/2313-8416.2020.001390.

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<strong>The object</strong> of research is the thermal and humidity processes occurring during artificial cooling of atmospheric air to the dew point temperature in the evaporators of refrigeration machines of the compression and absorption type. <strong>This study solves the problem</strong> of finding energy efficient heat and humidity modes for cooling atmospheric air to the dew point temperature in regions with a shortage of water resources and high solar installations. It is shown that practically in all considered climatic zones with a shortage of water resources, the process o

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Ben Zid, Nihel, Nejib Hajji, and Mohamed El Ganaoui. "COP enhancement and comparison of different absorption cooling systems." MATEC Web of Conferences 330 (2020): 01032. http://dx.doi.org/10.1051/matecconf/202033001032.

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The absorption refrigeration machines represent a good alternative to compression refrigeration machines but the major problem of this type of refrigeration lies in the COP, which seems to be less efficient. Several researches are carried out to improve the performances of these machines such as the combination with the technology of the ejectors. In this work, we are interested in the three ammonia-water absorption cycles: Single effect absorption, Ejector-absorption and Combined ejector-flash tank absorption cycles. A gas-gas ejector would be installed between the generator and the condenser

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Kondrashov, A. V., and A. A. Trinchenko. "Condensation heat recycling system for heat engines." Power engineering: research, equipment, technology 25, no. 6 (2024): 67–77. http://dx.doi.org/10.30724/1998-9903-2023-25-6-67-77.

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THE RELEVANCE of the research lies in the need to use waste heat, which is a byproduct of the operation of energy machines, to increase the efficiency of their operation. Using the example of introducing a system for recovering condensation heat and using it in an air heating system, the possibility of beneficial use of waste heat generated by refrigeration machines used to freeze the ice arena of a sports complex was confirmed.TARGET. Development of a system for recycling the condensation heat of refrigeration machines to use waste heat when organizing air heating of a building.METHODS. Study

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Коновалов, Дмитро Вікторович, Роман Миколайович Радченко, Сергій Георгійович Фордуй, Віктор Павлович Халдобін, Олексій Олегович Зєліков та Олександр Анатолійович Різун. "ВДОСКОНАЛЕННЯ ТЕПЛОВИКОРИСТОВУЮЧИХ ЕЖЕКТОРНИХ ХОЛОДИЛЬНИХ МАШИН ЗАСТОСУВАННЯМ АЕРОТЕРМОПРЕСОРНИХ ТЕХНОЛОГІЙ". Aerospace technic and technology, № 1 (26 лютого 2021): 60–66. http://dx.doi.org/10.32620/aktt.2021.1.06.

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The paper shows and analyzes circuit solutions for improving the existing schemes of ejector heat-using refrigeration machines, which are used as part of cogeneration plants. One of the promising areas is the use of an aerothermopressor, which implements the effect of thermogasdynamic compression, which is to increase the pressure while reducing the temperature in the evaporation of liquid, which injected into the flow of vapor moving at speed near the sound. To analyze the efficiency of ejector refrigeration machines, the developed calculation model was used, which takes into account the use

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Babenkov, Yu I., V. V. Romanov, G. A. Galka, N. A. Bazhutkina, and A. A. Yuritsyn. "Calculation of dynamic operating modes refrigeration machines with electric energy sources." E3S Web of Conferences 431 (2023): 02006. http://dx.doi.org/10.1051/e3sconf/202343102006.

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The method of calculating the dynamic operating modes of refrigerating machines with electric power sources is described. As an example, the results of the calculation and data of experimental studies of the processes of starting a refrigerating machine with an electric asynchronous motor are given.

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Isakadze, Tamaz, and Givi Gugulashvili. "Effect of Cooling Mode on Chiller Energy Efficiency." Works of Georgian Technical University, no. 3(521) (September 29, 2021): 102–8. http://dx.doi.org/10.36073/1512-0996-2021-3-102-108.

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Currently, refrigeration machines (HM) with two temperature regimes are widely used in modern supermarkets and hypermarkets. Medium temperature refrigerating machines (ST XM) with a boiling point of -10 ℃ are designed to maintain the air temperature in storage chambers within 0 ÷ -6 ℃. Low-temperature refrigerating machines (NT XM) with a boiling point of -35 ℃ are designed to maintain an air temperature of -18 ÷ -20℃. To carry out these processes, one-stage refrigerators were used, the schematic diagrams of which are shown in the first figure. The article presents an innovative technology whi

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Novikov, Ilya V. "The new textbook Automation of Refrigeration Units." Refrigeration Technology 111, no. 1 (2022): 75–76. http://dx.doi.org/10.17816/rf109234.

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The new textbook Automation of Refrigeration Units, published by Intermedia (St. Petersburg) in April 2022, presents the program contents of the special subject Automation of Refrigeration Units developed to train students based on the federal state educational standard of higher education. The textbook contains lecture course content from the Department of Refrigeration Machines of the Astrakhan State Technical University and its branch, the Dmitrov Fishing-Industry Technological Institute. Zhiltsov IB, Novikov IV. Automation of refrigeration units: a textbook. St. Petersburg: Informati

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Mungyeko Bisulandu, Baby-Jean Robert, Rami Mansouri, and Adrian Ilinca. "Diffusion Absorption Refrigeration Systems: An Overview of Thermal Mechanisms and Models." Energies 16, no. 9 (2023): 3610. http://dx.doi.org/10.3390/en16093610.

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The energy transition, originating in the limitation of fossil resources and greenhouse gas (GHG) emission reduction, is the basis of many studies on renewable energies in different industrial applications. The diffusion absorption refrigeration machines are very promising insofar as they allow the use of renewable resources (solar, geothermal, waste gas, etc.). This technology is often considered an alternative to vapor compression systems in cooling and refrigeration applications. This paper aims to overview the thermal mechanisms related to modeling system energy sources and highlight the p

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Khrekin, A. S., I. V. Baranov, and A. A. Nikitin. "The analysis of cascade refrigeration machine cycles efficiency using carbon dioxide." Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering 5, no. 4 (2021): 55–64. http://dx.doi.org/10.25206/2588-0373-2021-5-4-55-64.

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The paper analyzes and proves the feasibility of improving the energy performance of low-temperature refrigeration machines operating on R744 using cascade design with R134a, R1234yf and R717 as refrigerants based on data the scientific study of two-stage schemes analysis. At present, it is given the existing environmental prohibitions and the growing interest in the creation of low-temperature refrigeration machines operating on carbon dioxide (R744) in two-stage and cascade schemes, the presented research supplements the scientific literature on justifying the use of each of them.

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Vaibhav, Singh Chandel* Sohail Bux Aseem C. Tiwari. "PERFORMANCE ANALYSIS OF AIR CONDITIONING SYSTEM FOR AN AUTOMOBILE BASED ON AMMONIA -WATER VAPOUR ABSORPTION REFRIGERATION SYSTEM RUN BY EXHAUST WASTE HEAT OF DIESEL ENGINE." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 5 (2017): 198–205. https://doi.org/10.5281/zenodo.573536.

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The air conditioning system of automobiles is mainly uses Vapour Compression Refrigerant System (VCRS) which absorbs and removes heat from the space to be cooled and throws out the heat to atmosphere. In vapour compression refrigerant system, the system utilizes power from engine shaft as the input power to drive the compressor of the refrigeration system, hence the engine has to produce extra work to run the compressor of the refrigerating system utilizing extra amount of fuel. This loss of power of the motor vehicle for refrigeration can be ignored by utilizing another refrigeration system i

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Yusha, V. L. "Theoretical assessment of the effectiveness of application single-stage long-stroke piston compressors in refrigeration and hydrocarbon gas liquefaction systems." Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering 8, no. 1 (2024): 17–24. http://dx.doi.org/10.25206/2588-0373-2024-8-1-17-24.

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The analysis of the main modern technologies for obtaining low temperatures and liquefying hydrocarbons using compressor equipment is presented and the most significant results of research in the field of low-flow compressors based on low-speed, long-stroke piston stages are presented. A method for calculating an ideal vapor-compression refrigeration cycle is presented, adapted to the object under consideration, taking into account the possibility of implementing quasi-isothermal compression. A comparative computational analysis of temperature conditions and thermodynamic efficiency of a two-s

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A. Ikem, Ikem, Paschal A. Ubi, Matthew I. Ibeh, Saviour E. Ofem, and Assam T.Assam. "REVIEW OF REFRIGERANTS FOR STEAM COMPRESSION REFRIGERATION MACHINES." International Journal of Engineering and Technology 10, no. 4 (2018): 1172–80. http://dx.doi.org/10.21817/ijet/2018/v10i4/181004056.

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Fazelpour, Farivar, and Tatiana Morosuk. "Exergoeconomic analysis of carbon dioxide transcritical refrigeration machines." International Journal of Refrigeration 38 (February 2014): 128–39. http://dx.doi.org/10.1016/j.ijrefrig.2013.09.016.

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Cacciola, G., G. Restuccia, and L. Mercadante. "Composites of activated carbon for refrigeration adsorption machines." Carbon 33, no. 9 (1995): 1205–10. http://dx.doi.org/10.1016/0008-6223(95)00051-e.

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Pronin, V. A., A. V. Kovanov, V. A. Tsvetkov, E. N. Mikhailova, and E. A. Kalashnikova. "Assessment of the influence of gap wall mobility factor at calculation of leakage in working section of a scroll compressor. Part 1." Omsk Scientific Bulletin. Series Aviation-Rocket and Power Engineering 7, no. 1 (2023): 9–17. http://dx.doi.org/10.25206/2588-0373-2023-7-1-9-17.

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The scroll type compressor is widely used in the medium capacity segment of refrigeration and air conditioning technology including heat pumps. Today there is an active process of changing from hydrofluorocarbons to natural refrigerants with low global warming potential. CO2, with its low critical point and correspondingly high operating pressures, is gaining in importance. For operation with new refrigerants, the scroll compressor has to be adapted to take account of all its design features, the most important of which are the clearances in the machine's flow area. It has to be considered tha

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Baglivo, Cristina, Paolo Maria Congedo, and Pasquale Antonio Donno. "Analysis of Thermodynamic Cycles of Heat Pumps and Magnetic Refrigerators Using Mathematical Models." Energies 14, no. 4 (2021): 909. http://dx.doi.org/10.3390/en14040909.

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This paper proposes a critical review of the different aspects concerning magnetic refrigeration systems, and performs a detailed analysis of thermodynamic cycles, using mathematical models found in the literature. Langevin’s statistical mechanical theory faithfully describes the physical operation of a refrigeration machine working according to a magnetic Ericsson cycle. Results of mathematical and real experimental models are compared to deduce which best describes the Ericsson cycle. The theoretical data are not perfectly consistent with the experimental data; there is a maximum deviation o

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Porytchikov, A. F., and K. S. Krysanov. "New fields of application of regenerative cooling-gas machines." Izvestiya MGTU MAMI 8, no. 3-3 (2014): 58–62. http://dx.doi.org/10.17816/2074-0530-67557.

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This paper describes the application of a low-temperature cooling. The most relevant schemes of low-temperature coolant for needs of cryochemical technologies using refrigeration gas Stirling machine were shown.

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