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Methods for Sampling and Measurement of Compressed Air Contaminants

Abstract

In order to improve the technique for measuring oil and water entrained in a compressed air stream, a laboratory study has been made of some methods for sampling and measurement. For this purpose water or oil as artificial contaminants were injected in thin streams into a test loop, carrying dry compressed air. Sampling was performed in a vertical run, down-stream of the injection point. Wall attached liquid, coarse droplet flow, and fine droplet flow were sampled separately. The results were compared with two-phase flow theory and direct observation of liquid behaviour. In a study of sample transport through narrow tubes, it was observed that, below a certain liquid loading, the sample did not move, the liquid remaining stationary on the tubing wall. The basic analysis of the collected samples was made by gravimetric methods. Adsorption tubes were used with success to measure water vapour. A humidity meter with a sensor of the aluminium oxide type was found to be unreliable. Oil could be measured selectively by a flame ionization detector, the sample being pretreated in an evaporation- condensation unit
Authors:
Publication Date:
Oct 15, 1976
Product Type:
Technical Report
Report Number:
AE-511
Resource Relation:
Other Information: 26 refs., 26 figs., 5 tabs.
Subject:
42 ENGINEERING; SAMPLING; COMPRESSED AIR; POLLUTANTS; OILS; WATER; GRAVIMETRIC ANALYSIS
OSTI ID:
922500
Research Organizations:
AB Atomenergi, Nykoeping (Sweden)
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Other: ISBN 91-7010-007-1; TRN: SE0808045
Availability:
Commercial reproduction prohibited; OSTI as DE00922500
Submitting Site:
SWDN
Size:
52 pages
Announcement Date:
Jan 25, 2008

Citation Formats

Stroem, L. Methods for Sampling and Measurement of Compressed Air Contaminants. Sweden: N. p., 1976. Web.
Stroem, L. Methods for Sampling and Measurement of Compressed Air Contaminants. Sweden.
Stroem, L. 1976. "Methods for Sampling and Measurement of Compressed Air Contaminants." Sweden.
@misc{etde_922500,
title = {Methods for Sampling and Measurement of Compressed Air Contaminants}
author = {Stroem, L}
abstractNote = {In order to improve the technique for measuring oil and water entrained in a compressed air stream, a laboratory study has been made of some methods for sampling and measurement. For this purpose water or oil as artificial contaminants were injected in thin streams into a test loop, carrying dry compressed air. Sampling was performed in a vertical run, down-stream of the injection point. Wall attached liquid, coarse droplet flow, and fine droplet flow were sampled separately. The results were compared with two-phase flow theory and direct observation of liquid behaviour. In a study of sample transport through narrow tubes, it was observed that, below a certain liquid loading, the sample did not move, the liquid remaining stationary on the tubing wall. The basic analysis of the collected samples was made by gravimetric methods. Adsorption tubes were used with success to measure water vapour. A humidity meter with a sensor of the aluminium oxide type was found to be unreliable. Oil could be measured selectively by a flame ionization detector, the sample being pretreated in an evaporation- condensation unit}
place = {Sweden}
year = {1976}
month = {Oct}
}