He, N.; Jiang, T., and Zhang, L., 2018. Experimental research on the vapor pressure and critical parameters of ethyl fluoride (HFC-161). In: Liu, Z.L. and Mi, C. (eds.), Advances in Sustainable Port and Ocean Engineering. Journal of Coastal Research, Special Issue No. 83, pp. 129–134. Coconut Creek (Florida), ISSN 0749-0208.
Nowadays, many alternative refrigerants are studied for protecting ozonosphere. HFC161 is one of these refrigerants which are friendly to environment, because its Ozone Depleting Potentials (ODP) is zero. And it has a very low global warming potential, high cooling capacity and excellent energy efficiency. In present work, the vapor pressure of HFC161 has been measured using a static type apparatus over the temperature range from 233.15 K to 375.15 K, together with the vapor pressure of isobutane (HC-600a) measured in the temperature range from 275.60 K to 343.16 K for verifying the experimental apparatus. The measured vapor pressure data and those reported by other investigators have been evaluated, and a vapor pressure data set with reasonable accuracy has been obtained. Based on this consistent and reliable data set, a Wagner-type equation has been presented, from which the critical pressure Pc= 5.035 MPa was extrapolated. The critical temperature Tc= 375.83 K and critical density ρc= 286.215 kg•m−3 of HFC-161 have been measured in this work.