Advanced

Performance study on a single-screw compressor for a portable natural gas liquefaction process

Li, Yong; Xie, Gongnan LU ; Sunden, Bengt LU ; Lu, Yuanwei; Wu, Yuting and Qin, Jiang (2018) In Energy 148. p.1032-1045
Abstract

Portable natural gas liquefaction devices are widely used to exploit unconventional natural gas resources and one of key components is a compressor. In this paper, a new natural gas liquefaction process is simulated and optimized and a single-screw compressor with 200 mm diameter is designed to be applied in this process. To verify the performance of the single-screw compressor, an experimental system was set up and performance parameters were studied, including volumetric efficiency, specific power rate, shaft efficiency, irreversible loss rate and cooling efficiency of the lubricating oil. The influence of the lubricating oil on the volumetric efficiency was also observed. Furthermore, the impact of actual compressor performance on... (More)

Portable natural gas liquefaction devices are widely used to exploit unconventional natural gas resources and one of key components is a compressor. In this paper, a new natural gas liquefaction process is simulated and optimized and a single-screw compressor with 200 mm diameter is designed to be applied in this process. To verify the performance of the single-screw compressor, an experimental system was set up and performance parameters were studied, including volumetric efficiency, specific power rate, shaft efficiency, irreversible loss rate and cooling efficiency of the lubricating oil. The influence of the lubricating oil on the volumetric efficiency was also observed. Furthermore, the impact of actual compressor performance on the liquefaction process was also analyzed. The results indicate that the performance of the compressor changes greatly when it operates deviating from its design condition. The maximum volumetric efficiency, shaft efficiency, irreversible loss rate and cooling efficiency of the lubricating oil are 0.91, 0.64, 0.56 and 0.22, respectively. The minimum specific power rate is 6.5 kW·(m3·min−1)−1. In addition, the lubricating oil has a good effect of sealing so that the volumetric efficiency can be improved by 10.5%. Considering the actual performance of the single-screw compressor, specific power consumption of the process increases by 43.3%.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Portable natural gas liquefaction process, Shaft efficiency, Single-screw compressor, Specific power consumption, Volumetric efficiency
in
Energy
volume
148
pages
14 pages
publisher
Elsevier
external identifiers
  • scopus:85042194925
ISSN
0360-5442
DOI
10.1016/j.energy.2018.02.003
language
English
LU publication?
yes
id
6f7a7e9a-b850-47de-8968-be634d4e0ae0
date added to LUP
2018-03-06 07:04:54
date last changed
2018-05-29 12:25:56
@article{6f7a7e9a-b850-47de-8968-be634d4e0ae0,
  abstract     = {<p>Portable natural gas liquefaction devices are widely used to exploit unconventional natural gas resources and one of key components is a compressor. In this paper, a new natural gas liquefaction process is simulated and optimized and a single-screw compressor with 200 mm diameter is designed to be applied in this process. To verify the performance of the single-screw compressor, an experimental system was set up and performance parameters were studied, including volumetric efficiency, specific power rate, shaft efficiency, irreversible loss rate and cooling efficiency of the lubricating oil. The influence of the lubricating oil on the volumetric efficiency was also observed. Furthermore, the impact of actual compressor performance on the liquefaction process was also analyzed. The results indicate that the performance of the compressor changes greatly when it operates deviating from its design condition. The maximum volumetric efficiency, shaft efficiency, irreversible loss rate and cooling efficiency of the lubricating oil are 0.91, 0.64, 0.56 and 0.22, respectively. The minimum specific power rate is 6.5 kW·(m<sup>3</sup>·min<sup>−1</sup>)<sup>−1</sup>. In addition, the lubricating oil has a good effect of sealing so that the volumetric efficiency can be improved by 10.5%. Considering the actual performance of the single-screw compressor, specific power consumption of the process increases by 43.3%.</p>},
  author       = {Li, Yong and Xie, Gongnan and Sunden, Bengt and Lu, Yuanwei and Wu, Yuting and Qin, Jiang},
  issn         = {0360-5442},
  keyword      = {Portable natural gas liquefaction process,Shaft efficiency,Single-screw compressor,Specific power consumption,Volumetric efficiency},
  language     = {eng},
  month        = {04},
  pages        = {1032--1045},
  publisher    = {Elsevier},
  series       = {Energy},
  title        = {Performance study on a single-screw compressor for a portable natural gas liquefaction process},
  url          = {http://dx.doi.org/10.1016/j.energy.2018.02.003},
  volume       = {148},
  year         = {2018},
}