The thermal conductivity of gaseous and liquid ammonia has been measured in the range 300–300 K and at pressures up to 50 MPa. The measurements were a necessary preliminary to a fitting of the thermal conductivity surface in the density–temperature plane, which is part of the current program of the Transport Properties Subcommittee of the I.U.P.A.C. Results were obtained that are believed to be accurate to 2 percent. It is difficult to make a good comparison of these results with previous data until a full correlation of the thermal conductivity of ammonia is carried out. A preliminary assessment for the liquid phase indicates that agreement is reasonable over much of the range with differences up to around 5 percent under certain conditions. For the gas phase an approximate extrapolation to atmospheric pressure can be made and the results compared with some recent recommended values. Differences of ±3 percent are observed.
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November 1988
This article was originally published in
Journal of Heat Transfer
Research Papers
Thermal Conductivity of Gaseous and Liquid Ammonia
A. A. Clifford,
A. A. Clifford
Laboratoire des Interactions Mole´culaire et des Hautes Pressions, C.N.R.S., Universite´ Paris Nord, 93430, Villetaneuse, France
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R. Tufeu
R. Tufeu
Laboratoire des Interactions Mole´culaire et des Hautes Pressions, C.N.R.S., Universite´ Paris Nord, 93430, Villetaneuse, France
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A. A. Clifford
Laboratoire des Interactions Mole´culaire et des Hautes Pressions, C.N.R.S., Universite´ Paris Nord, 93430, Villetaneuse, France
R. Tufeu
Laboratoire des Interactions Mole´culaire et des Hautes Pressions, C.N.R.S., Universite´ Paris Nord, 93430, Villetaneuse, France
J. Heat Transfer. Nov 1988, 110(4a): 992-995 (4 pages)
Published Online: November 1, 1988
Article history
Received:
April 3, 1987
Online:
October 20, 2009
Citation
Clifford, A. A., and Tufeu, R. (November 1, 1988). "Thermal Conductivity of Gaseous and Liquid Ammonia." ASME. J. Heat Transfer. November 1988; 110(4a): 992–995. https://doi.org/10.1115/1.3250604
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