Validation for a new apparatus measuring water vapour enhancement factors up to 6 MPa

H. Sairanen, M. Heinonen

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

High accuracy dew-point measurements require a water vapour enhancement factor to correct the effects of pressure drop in a sampling line. The enhancement factor is also needed when a humidity quantity value is converted to another. In this paper a new apparatus for traceable measurements of the enhancement factor is presented along with the results of validation measurements with air and methane. The apparatus is designed for dew-point temperatures from -50 to +15 °C and the pressure range from atmospheric pressure up to 6 MPa. The performance of the apparatus was investigated by comparing measurement results to the literature data for air and the data calculated from published thermodynamic measurement results for methane. It is shown that the experimental results agree with the reference data within the estimated uncertainties.
Original languageEnglish
Article number035301
Number of pages8
JournalMeasurement Science and Technology
Volume25
Issue number3
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

Water Vapor
Water vapor
water vapor
Enhancement
augmentation
dew point
Methane
methane
air
Pressure Drop
Humidity
Air
pressure drop
Atmospheric pressure
Pressure drop
humidity
Atmospheric humidity
atmospheric pressure
High Accuracy
Thermodynamics

Keywords

  • dew-point temperature
  • enhancement factor
  • humidity
  • methane
  • air

Cite this

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title = "Validation for a new apparatus measuring water vapour enhancement factors up to 6 MPa",
abstract = "High accuracy dew-point measurements require a water vapour enhancement factor to correct the effects of pressure drop in a sampling line. The enhancement factor is also needed when a humidity quantity value is converted to another. In this paper a new apparatus for traceable measurements of the enhancement factor is presented along with the results of validation measurements with air and methane. The apparatus is designed for dew-point temperatures from -50 to +15 °C and the pressure range from atmospheric pressure up to 6 MPa. The performance of the apparatus was investigated by comparing measurement results to the literature data for air and the data calculated from published thermodynamic measurement results for methane. It is shown that the experimental results agree with the reference data within the estimated uncertainties.",
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Validation for a new apparatus measuring water vapour enhancement factors up to 6 MPa. / Sairanen, H.; Heinonen, M.

In: Measurement Science and Technology, Vol. 25, No. 3, 035301, 2014.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Sairanen, H.

AU - Heinonen, M.

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AB - High accuracy dew-point measurements require a water vapour enhancement factor to correct the effects of pressure drop in a sampling line. The enhancement factor is also needed when a humidity quantity value is converted to another. In this paper a new apparatus for traceable measurements of the enhancement factor is presented along with the results of validation measurements with air and methane. The apparatus is designed for dew-point temperatures from -50 to +15 °C and the pressure range from atmospheric pressure up to 6 MPa. The performance of the apparatus was investigated by comparing measurement results to the literature data for air and the data calculated from published thermodynamic measurement results for methane. It is shown that the experimental results agree with the reference data within the estimated uncertainties.

KW - dew-point temperature

KW - enhancement factor

KW - humidity

KW - methane

KW - air

U2 - 10.1088/0957-0233/25/3/035301

DO - 10.1088/0957-0233/25/3/035301

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VL - 25

JO - Measurement Science and Technology

JF - Measurement Science and Technology

SN - 0957-0233

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