Theoretical substantiation of the efficiency of a screw single-rotor compressor with a new type of in-built capacity regulator
- 作者: Tsvetkov V.A.1,2, Pronin V.A.1, Mikhailova E.N.1, Kovanov A.V.1
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隶属关系:
- ITMO University
- AUO Ural Scientific Center
- 期: 卷 114, 编号 1 (2025)
- 页面: 52-64
- 栏目: Original Study Articles
- URL: https://ogarev-online.ru/0023-124X/article/view/357923
- DOI: https://doi.org/10.17816/RF643190
- EDN: https://elibrary.ru/QRZZDK
- ID: 357923
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BACKGROUND: The need for energy conservation is caused by the global social, environmental, and economic agenda. Refrigeration equipment is a significant consumer of power; thus, ensuring energy efficiency of cooling systems for various applications is an urgent task. This area can benefit from regulating the compressor displacement, which in turn is the main energy consumer of refrigeration systems.
AIM: To explain the efficiency of single screw compressor with novel built-in displacement regulator.
MATERIALS AND METHODS: We studied the single screw compressor equipped with a built-in displacement regulator (a rotary adjustment ring). Single screw compressor displacement during its regulation was calculated based on the developed mathematical model automated in the Python programming environment and ANSYS tools. In this case, single screw compressor efficiency was evaluated by two parameters, including volumetric efficiency λ and specific power consumption Ns.
RESULTS: The paper compares the efficiency of single screw compressor for frequency displacement regulation and regulation with a rotary adjustment ring. It was found that regulation with a rotary adjustment ring is preferable.
CONCLUSION: The study revealed the preferable operating range of single screw compressor at the highest values of λ, approximately corresponding to the operation at 1500–3000 rpm. This range can be considered as optimal. Displacement regulation by its reduction using a frequency control outside the selected range will be ineffective. In the regulation range of actual displacement Va ≈ 10%–40%, Ns increases. However, this value in the considered range is lower in regulation with an adjustment ring compared to the frequency regulation (up to 23.7% more effective for air-operated and up to 13.6% more effective for ammonia-operated control ring).
作者简介
Vadim Tsvetkov
ITMO University; AUO Ural Scientific Center
编辑信件的主要联系方式.
Email: wadimtsvetkov@mail.ru
ORCID iD: 0000-0003-4357-0022
Cand. Sci. (Engineering), Assistant Professor
俄罗斯联邦, Saint Petersburg; Saint PetersburgVladimir Pronin
ITMO University
Email: maior.pronin@mail.ru
ORCID iD: 0000-0002-9278-5903
SPIN 代码: 3737-3495
Professor, Dr. Sci. (Engineering)
俄罗斯联邦, Saint PetersburgEkaterina Mikhailova
ITMO University
Email: mikhaylova_en@mail.ru
ORCID iD: 0000-0002-2700-0348
俄罗斯联邦, Saint Petersburg
Alexander Kovanov
ITMO University
Email: avkovanov@itmo.ru
ORCID iD: 0000-0003-2821-795X
Assistant Professor, Cand. Sci. (Engineering)
俄罗斯联邦, Saint Petersburg参考
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