Share

IIR document

Behavior of isobaric heat capacity of R32 in the gas phase.

Author(s) : KAGAWA N., MATSUGUCHI A., YAMAYA K., et al.

Type of article: Article, IJR article

Summary

The specific isobaric heat capacity was measured for R 32 (difluoromethane) in the gas phase. Twenty-one measurements for R 32 were obtained at temperatures from 282 to 319 K and at pressures from 1.0 to 2.4 MPa, which are very close to the saturation curve. The expanded uncertainty (k = 2) of the temperature measurements is estimated to be less than 23 mK, and that of the pressure measurements is less than 15 kPa. The expanded uncertainty for cp is estimated to range from 15 to 47 J kg-1 K-1. The measurements were compared with available equations of state. Based on the measurements, heat capacity curves of the ideal gas and saturated vapor of R 32 were specified. These data will be very useful for improving available models, especially for correcting behavior in the gas phase, so as to represent reliable thermodynamic properties of R 32 and refrigerant mixtures with R32 that are used for refrigeration and air conditioning systems.

Available documents

Format PDF

Pages: 2216-2222

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Behavior of isobaric heat capacity of R32 in the gas phase.
  • Record ID : 30009831
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 8
  • Publication date: 2013/12

Links


See other articles in this issue (37)
See the source

Indexing