Effect of Gas Impurities on the Throttling Process of Fluorocarbon Refrigerants: Estimation of the Henry's Law Constant

0330055 - ÚT 2010 RIV US eng J - Journal Article
Vinš, Václav - Vacek, V.
Effect of Gas Impurities on the Throttling Process of Fluorocarbon Refrigerants: Estimation of the Henry's Law Constant.
Journal of Chemical and Engineering Data. Roč. 54, č. 9 (2009), s. 2395-2403. ISSN 0021-9568. E-ISSN 1520-5134
Institutional research plan: CEZ:AV0Z20760514
Keywords : fluorocarbons * Henry’s law constant * nitrogen
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.695, year: 2009

The effect of the presence of noncondensing gases on the throttling process of a saturated fluorocarbon refrigerant was studied. Two-phase flow of the throttled refrigerant was investigated in a special divided small-diameter tube equipped with pressure and temperature sensors. Gas impurities affected the manner of onset of vaporization and consequently decreased the overall effectiveness of a vapor cooling circuit. Available literature data on three gases (O2, Xe, N2) was collected and analyzed to establish a simple temperature correlation for the Henry's law constant of gases dissolved in saturated fluorocarbons at a low gas partial pressure around 0.1 MPa. The Peng-Robinson cubic equation of state and the perturbed-chain modification of statistical associating fluid theory (PC-SAFT) were employed to predict the temperature dependency of gas solubility in fluorinert substances.
Permanent Link: http://hdl.handle.net/11104/0175925