Study of ammonia screw compressor used in a refrigeration unit a chiller with economizer
- Authors: Turkov M.N.1, Avtonomova I.V.2
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Affiliations:
- Cheleabinsk compressor plant
- Bauman Moscow State Technical University
- Issue: Vol 113, No 2 (2024)
- Pages: 76-82
- Section: Original Study Articles
- URL: https://freezetech.ru/0023-124X/article/view/630652
- DOI: https://doi.org/10.17816/RF630652
- EDN: https://elibrary.ru/SZUKBM
- ID: 630652
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Abstract
Background: Energy conservation and reduction of negative environmental impact of refrigeration units are relevant when developing new equipment. In this regard, we study the development of an ammonia oil-filled screw compressor for a low-temperature refrigeration cycle with an economizer. Ammonia is a natural refrigerant not subject to the Montreal, Copenhagen, and Kyoto Protocols, and economizers allow to increase the refrigeration coefficient compared to a two-stage cycle.
Aim: To propose a method to calculate intermediate pressure at which a refrigeration cycle with an economizer will have the highest refrigeration coefficient.
Methods: The refrigeration coefficient is calculated analytically. For this purpose, we developed a plant diagram. For all studied modes, we developed cycles s in enthalpy-pressure diagrams and calculated the refrigeration capacity, power consumption, and the refrigeration coefficient.
Results: We determined the correlation of refrigeration coefficient with the intermediate pressure for all studied modes.
Conclusion: We developed a method to calculate intermediate pressure at which a a refrigeration cycle with an economizer has the highest performance.
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About the authors
Maksim N. Turkov
Cheleabinsk compressor plant
Email: turkov_mn@chkz.ru
ORCID iD: 0009-0005-8394-967X
Russian Federation, Cheleabinsk
Inna V. Avtonomova
Bauman Moscow State Technical University
Author for correspondence.
Email: e5-kafedra@yandex.ru
ORCID iD: 0009-0003-8162-296X
SPIN-code: 9742-8280
Cand. Sci. (Tehn.), Associate Professor
Russian Federation, 5 2nd Baumanskaya st, office E-5, Moscow, 105005References
- Compressors in refrigeration technology. Types, structure, operation of compressors. [internet] Accessed on 12.12.2022. Available from: https://extxe.com/25174/kompressory-v-holodilnoj-tehnike-vidy-ustrojstvo-rabota-kompressorov/
- Economizer ECO. Installation and operation manual [internet] Accessed: 12.12.2022. Available from: http://www.TH-WITT.com, Info@TH-WITT.com
- Bykov AV, Kalnin IM, Kanyshev GA, et al. Analysis of the effectiveness of two-stage throttling in a scheme with an accessible screw compressor. Refrigeration Technology. 1976;6:10–14. (In Russ.)
- Bykov AV, Kalnin IM, Kanyshev GA, et al. Refrigeration system with screw compressor and two-stage throttling of refrigerant. Refrigeration Technology. 1983;4:7–9. (In Russ.)
- Bykov AV, Bezhanishvili EM, Kalnin IM, et al. Refrigeration compressors. Moscow: Kolos; 1992. (In Russ.)
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