Measurement of Critical Parameters for HFO-1234ze(Z)

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  • TANAKA Katsuyuki
    Department of Precision Machinery Engineering, College of Science and Technology, Nihon University

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  • HFO-1234ze(Z)の臨界定数の測定
  • HFO-1234ze(Z)ノ リンカイ テイスウ ノ ソクテイ

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<p></p><p>The critical parameters for cis−1,3,3,3−tetrafluoro−propene (HFO-1234ze(Z)) were measured by the meniscus observation. Firstly, menisci were observed roughly along three isochoric lines in the density range from 449 kg×m-3 to 478 kg×m-3, i.e. near the critical density reported in the literature. Secondly, menisci were observed precisely near the critical temperature along six isochoric lines in the density range from 454 kg×m-3 to 470 kg×m-3. The critical density, critical temperature and critical pressure of HFO-1234ze(Z) were determined to be 459 ± 3 kg×m-3, 423.34 ± 0.03 K and 3521 ± 6 kPa, respectively.</p><p></p>

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