Enhancement factor for water vapor-pressure correction in humid methane

H.A. Sairanen (Corresponding Author), M.O. Heinonen

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Energy gases are mainly composed of methane, and they are dried prior to pumping to natural gas grids. To avoid condensation of water-vapor related problems, the dew-point temperature is monitored. In dew-point temperature measurements, however, the water-vapor enhancement factor is needed to correct effects caused by pressure changes and to enable unit conversions when using instruments based on indirect measurement principles. In the work reported in this paper, new experiments were carried out, and methane–water equilibrium data available in the literature were analyzed for deriving a new equation. The derived equation provides an easy calculation method for the water-vapor enhancement factor in methane as a function of pressure and dew-point temperature. An uncertainty analysis for the equation is also presented covering the whole studied pressure ranging from atmospheric pressure up to 7 MPa, and the dew-point temperature ranges from +20°C down to hydrate forming temperatures.
Original languageEnglish
Pages (from-to)1280-1289
JournalInternational Journal of Thermophysics
Volume35
Issue number6-7
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

dew point
water pressure
vapor pressure
water vapor
methane
augmentation
temperature
natural gas
hydrates
temperature measurement
atmospheric pressure
pumping
coverings
condensation
grids
gases
energy

Keywords

  • dew-point temperature
  • enhancement factor
  • humidity
  • methane
  • natural gas

Cite this

Sairanen, H.A. ; Heinonen, M.O. / Enhancement factor for water vapor-pressure correction in humid methane. In: International Journal of Thermophysics. 2014 ; Vol. 35, No. 6-7. pp. 1280-1289.
@article{31e93692c1bd49ef8b25749a8419bf54,
title = "Enhancement factor for water vapor-pressure correction in humid methane",
abstract = "Energy gases are mainly composed of methane, and they are dried prior to pumping to natural gas grids. To avoid condensation of water-vapor related problems, the dew-point temperature is monitored. In dew-point temperature measurements, however, the water-vapor enhancement factor is needed to correct effects caused by pressure changes and to enable unit conversions when using instruments based on indirect measurement principles. In the work reported in this paper, new experiments were carried out, and methane–water equilibrium data available in the literature were analyzed for deriving a new equation. The derived equation provides an easy calculation method for the water-vapor enhancement factor in methane as a function of pressure and dew-point temperature. An uncertainty analysis for the equation is also presented covering the whole studied pressure ranging from atmospheric pressure up to 7 MPa, and the dew-point temperature ranges from +20°C down to hydrate forming temperatures.",
keywords = "dew-point temperature, enhancement factor, humidity, methane, natural gas",
author = "H.A. Sairanen and M.O. Heinonen",
year = "2014",
doi = "10.1007/s10765-014-1720-3",
language = "English",
volume = "35",
pages = "1280--1289",
journal = "International Journal of Thermophysics",
issn = "0195-928X",
publisher = "Springer",
number = "6-7",

}

Enhancement factor for water vapor-pressure correction in humid methane. / Sairanen, H.A. (Corresponding Author); Heinonen, M.O.

In: International Journal of Thermophysics, Vol. 35, No. 6-7, 2014, p. 1280-1289.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Enhancement factor for water vapor-pressure correction in humid methane

AU - Sairanen, H.A.

AU - Heinonen, M.O.

PY - 2014

Y1 - 2014

N2 - Energy gases are mainly composed of methane, and they are dried prior to pumping to natural gas grids. To avoid condensation of water-vapor related problems, the dew-point temperature is monitored. In dew-point temperature measurements, however, the water-vapor enhancement factor is needed to correct effects caused by pressure changes and to enable unit conversions when using instruments based on indirect measurement principles. In the work reported in this paper, new experiments were carried out, and methane–water equilibrium data available in the literature were analyzed for deriving a new equation. The derived equation provides an easy calculation method for the water-vapor enhancement factor in methane as a function of pressure and dew-point temperature. An uncertainty analysis for the equation is also presented covering the whole studied pressure ranging from atmospheric pressure up to 7 MPa, and the dew-point temperature ranges from +20°C down to hydrate forming temperatures.

AB - Energy gases are mainly composed of methane, and they are dried prior to pumping to natural gas grids. To avoid condensation of water-vapor related problems, the dew-point temperature is monitored. In dew-point temperature measurements, however, the water-vapor enhancement factor is needed to correct effects caused by pressure changes and to enable unit conversions when using instruments based on indirect measurement principles. In the work reported in this paper, new experiments were carried out, and methane–water equilibrium data available in the literature were analyzed for deriving a new equation. The derived equation provides an easy calculation method for the water-vapor enhancement factor in methane as a function of pressure and dew-point temperature. An uncertainty analysis for the equation is also presented covering the whole studied pressure ranging from atmospheric pressure up to 7 MPa, and the dew-point temperature ranges from +20°C down to hydrate forming temperatures.

KW - dew-point temperature

KW - enhancement factor

KW - humidity

KW - methane

KW - natural gas

U2 - 10.1007/s10765-014-1720-3

DO - 10.1007/s10765-014-1720-3

M3 - Article

VL - 35

SP - 1280

EP - 1289

JO - International Journal of Thermophysics

JF - International Journal of Thermophysics

SN - 0195-928X

IS - 6-7

ER -