AN EXPERIMENTAL-STUDY OF PVT PROPERTIES OF CFC ALTERNATIVE HFC-134A

HFC-134a is currently considered as a prospective substitute to the conventional CFC-12. In the present study, we have measured PVT property of HFC-134a for the gas phase by using Burnett method. The experimental apparatus designed and developed by ourself is introduced in detail. Tested experiment is done using high purity He. The RMS Dev. in pressure is 0.087%. The experimental uncertainty of the present measurement has been estimated being within +/-15mK for temperature, +/-2kPa for pressure respectively. The sample used is having a purity either one of 99.98 or 99.95 wt%. Forty-two PVT data have been measured. The present experimental PVT data as well as those reported by Wilson et al., Weber and Piao et al. are compared with the EOS developed by Piao et al. The results show that the present data are reliable.