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Impact of discharge port configurations on the performance of sliding vane rotary compressors with a rotating cylinder

Gu, Huaduo LU ; Chen, Yaping ; Wu, Jiafeng ; Jiang, Yunhui and Sundén, Bengt LU (2021) In Applied Thermal Engineering 186.
Abstract

With the increasing requirements of compressed gas energy storage systems for compressors and expanders, sliding vane rotary compressors are worth trying. To study the influence of different configurations of discharge ports on the performance of compressors, numerical simulations are conducted on the innovative sliding vane compressors with a rotating cylinder. The reliable Renormalization Group k-ε turbulent model is adopted in Fluent 2020R1. The results show that as the coverage angle increases, the averaged mass flow rates increase, the averaged exhaust gas temperature decreases and the leakage between the rotor and rotating cylinder and at sliding vane tips decrease. When the coverage angle increases from 15° to 45° at the central... (More)

With the increasing requirements of compressed gas energy storage systems for compressors and expanders, sliding vane rotary compressors are worth trying. To study the influence of different configurations of discharge ports on the performance of compressors, numerical simulations are conducted on the innovative sliding vane compressors with a rotating cylinder. The reliable Renormalization Group k-ε turbulent model is adopted in Fluent 2020R1. The results show that as the coverage angle increases, the averaged mass flow rates increase, the averaged exhaust gas temperature decreases and the leakage between the rotor and rotating cylinder and at sliding vane tips decrease. When the coverage angle increases from 15° to 45° at the central position angle of −28°, the volumetric efficiency increases from 89.38% to 92.65% while the isentropic efficiency increases from 76.43% to 86.19%. When the central position angles range from −28°, −23° to −18° at the coverage angle of 30°, the farther the discharge port is to the narrowest gap between the rotor and cylinder, the lower the outlet temperature, the less the leakage flow, and the higher the isentropic efficiency. The scheme with the central angle of −28° and coverage angle of 45° is recommended as the best one.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Compressor performance, Discharge port, Leakage flow, Mechanical friction, Numerical simulation, Sliding vane rotary compressor with rotating cylinder
in
Applied Thermal Engineering
volume
186
article number
116526
publisher
Elsevier
external identifiers
  • scopus:85098959190
ISSN
1359-4311
DOI
10.1016/j.applthermaleng.2020.116526
language
English
LU publication?
yes
id
c30b3e79-dc66-48c4-98e3-f356edadb43d
date added to LUP
2021-01-19 09:37:44
date last changed
2023-11-20 21:16:49
@article{c30b3e79-dc66-48c4-98e3-f356edadb43d,
  abstract     = {{<p>With the increasing requirements of compressed gas energy storage systems for compressors and expanders, sliding vane rotary compressors are worth trying. To study the influence of different configurations of discharge ports on the performance of compressors, numerical simulations are conducted on the innovative sliding vane compressors with a rotating cylinder. The reliable Renormalization Group k-ε turbulent model is adopted in Fluent 2020R1. The results show that as the coverage angle increases, the averaged mass flow rates increase, the averaged exhaust gas temperature decreases and the leakage between the rotor and rotating cylinder and at sliding vane tips decrease. When the coverage angle increases from 15° to 45° at the central position angle of −28°, the volumetric efficiency increases from 89.38% to 92.65% while the isentropic efficiency increases from 76.43% to 86.19%. When the central position angles range from −28°, −23° to −18° at the coverage angle of 30°, the farther the discharge port is to the narrowest gap between the rotor and cylinder, the lower the outlet temperature, the less the leakage flow, and the higher the isentropic efficiency. The scheme with the central angle of −28° and coverage angle of 45° is recommended as the best one.</p>}},
  author       = {{Gu, Huaduo and Chen, Yaping and Wu, Jiafeng and Jiang, Yunhui and Sundén, Bengt}},
  issn         = {{1359-4311}},
  keywords     = {{Compressor performance; Discharge port; Leakage flow; Mechanical friction; Numerical simulation; Sliding vane rotary compressor with rotating cylinder}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Applied Thermal Engineering}},
  title        = {{Impact of discharge port configurations on the performance of sliding vane rotary compressors with a rotating cylinder}},
  url          = {{http://dx.doi.org/10.1016/j.applthermaleng.2020.116526}},
  doi          = {{10.1016/j.applthermaleng.2020.116526}},
  volume       = {{186}},
  year         = {{2021}},
}