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Thermal conductivity of saturated liquid of R1234ze(E) + R32 and R1234yf + R32 mixtures.

[In Japanese. / En japonais.]

Author(s) : MIYARA A., FUKUDA R., TSUBAKI K.

Type of article: Article

Summary

Thermal conductivities of saturated liquid of R1234ze(E), R1234yf, R32, R1234ze(E)+ R32,and R1234yf + R32 have been measured with the transient hot wire method where long and short platinum wires with 15 µm of diameter are used to eliminate the end effect at junctions. Measurements were conducted under saturated liquid conditions of which temperatures are from 10°C to 80°C though it is limited under the critical temperature. The thermal conductivity of R1234ze(E) is lower than that of R32 and it varies from 79 mW(m.K) to 57 mW(m.K) for the temperature from 10°C to 80°C. The thermal conductivity of R1234yf is also lower than that of R32 and it varies from 68 mW(m.K) to 49 mW/(m.K) for the temperature from 10°C to 80°C. The thermal conductivities of both mixtures are between the pure refrigerants and they are slightly lower than linearly interpolated values.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 30003434
  • Languages: Japanese
  • Source: Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 28 - n. 4
  • Publication date: 2011

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