A Novel Double Chamber Rotary Sleeve Air Compressor- Part III: Leakage Losses Model

This paper presents comprehensive leakage model of a novel double chamber rotary sleeve air compressor (DCRSC). The compressor mechanism is that of a rotary motion whereby the novelty lies in the usage of two rotating sleeves and a secured vane that has one end fixed to an outer sleeve and the other...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-07, Vol.884 (1), p.12106
Main Authors: Alduqri, Y A, Kamar, H M, Musa, M N, Kamsah, N B, Idris, N R N, Alqaifi, Gamal
Format: Article
Language:English
Subjects:
Adiabatic flow
Air compressors
Clearances
Compression tests
Contact pressure
double-chamber
Leakage
leakage losses
Lubricants
modeling
Pressure chambers
Rotation
simulation
sleeve compressor
Sleeves
Thermodynamic models
Vacuum chambers
Volumetric efficiency
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Summary:This paper presents comprehensive leakage model of a novel double chamber rotary sleeve air compressor (DCRSC). The compressor mechanism is that of a rotary motion whereby the novelty lies in the usage of two rotating sleeves and a secured vane that has one end fixed to an outer sleeve and the other end to a rotor, respectively. The thermodynamic model and friction model of the DCRSC are respectively presented in Part I and Part II of this paper series. The main goal of this study is to formulate and analyse the internal leakage losses at different rotational speed. Dynamic clearance at the contact regions between the high-pressure and low-pressure chambers were made clear. The variations of the internal leakage rate and volumetric efficiency for three compression approaches namely: adiabatic, polytropic and isothermal compression processes were evaluated. At maximum rotational speed of 1500 rpm, the DCRSC volumetric efficiencies are 53.1%, 69.4% and 98% when air undergoes adiabatic, polytropic and isothermal compression process, respectively. The internal leakage losses can effectively be minimized by selecting the right lubricant and reducing the assembly clearances of the rotating parts that defines the compression chambers.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/884/1/012106