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http://dx.doi.org/10.7842/kigas.2015.19.1.12

A Study on the Quantitative Measurement of Oil Carry-over in Natural Gas Vehicle fueling Station Using A Gravimetric Method  

Hwang, Sung-Soo (Dept. of New Business Techology Center)
Oh, Jun-Seok (Dept. of New Business Techology Center)
Kim, Ki-Dong (Dept. of New Energy Technology Reearch Center)
Oh, Young-Sam (Dept. of New Energy Technology Reearch Center)
Choi, Kyung-Sik (Dept. of New Energy Technology Reearch Center)
Kim, Hack-Eun (Dept. of New Business Techology Center)
Publication Information
Journal of the Korean Institute of Gas / v.19, no.1, 2015 , pp. 12-17 More about this Journal
Abstract
The core of the CNG fueling station is the compressor and most of CNG compressors in Korea require lubrication. Lubrication oil of CNG compressor that can be transferred into the pressure regulators and the engines of fueling system can cause a negative effect on NGV(Nature Gas Vehicle) performance during refueling due to oil Carry-over. In order to avoid the problem, it is necessary to enhance the quality of the compressed natural gas by measuring quantitatively the amount of the transferred oil. In this research, a sampling device and sampling tube were developed, which can be used with a gravimetric method of detection to measure CNG oil Carry-over. In addition, CNG samples were taken at 6 pre-selected CNG fueling stations and analysed for their trace oil Carry-over. The measured total oil Carry-over ranged from 2.569 to 6.509 ppm. This test measurements were compared with those of previous studies to verify the results.
Keywords
oil carry-over; compressed natural gas; gravimetric method;
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  • Reference
1 J. S. Lee, J. O. Han, J. M. Chae, Y. C. Lee, S. H. Hong, J. S. Lim, S. G. Jay, Y. H. Hong, "Minimizing Oil Carry-over of Natural Gas Vehicle fueling Station", KIGAS, 19-26, (2005)
2 L. Thomason, "The Achilles Heel of Natural GasVehicles: The Symptoms, Diagnosis and Prevention of Oil Carry-over", A Natural Gas Vehicle Institute Technical Paper.
3 C. T. Billiet, R. M. Fielding, "A Quantitative Method to Determine Oil Carry-over from High Efficiency Coalescing Filters in Compressed Gases Under Varying Dynamic Conditions and the Interpretation of Results to Assist Filter System Design", International Compressor Engineering Conference, 398-407, (1998)
4 M. Czachorski etc, "Validation Testing of a Gravimetric Method to Measure CNG Compressor Oil Carry-over", IGT project No. 30649-11 (1998)
5 B. Faust, "Modern Chemical Techniques", Royal Society of Chemistry, Neville, (1997)