Journal
FLUID PHASE EQUILIBRIA
Volume 425, Issue -, Pages 335-341Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fluid.2016.06.024
Keywords
Flow calorimeter; HFE-7000; HFE-7100; Heat capacity
Funding
- scientific research project - Xi'an Aeronautical University [2016KY1205]
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This paper presents the heat capacities of HFE-7000 and HFE-7100 by a flow calorimeter. Ethanol has been used as a reference fluid to validate the flow calorimeter at different pressures and temperatures. With the flow calorimeter, the isobaric heat capacity of HFE-7000 (1-methoxyheptafluoropropane) and HFE-7100 (methoxy-nonafluorobutane) were measured in the temperature range from (255-294) K and from (255-323) K, respectively, and pressures up to 15 MPa. Through measuring the heat capacity of ethanol, the combined expanded uncertainty with a level of confidence of 0.95 (k = 2) of the measurement was estimated to less than +/- 2%. The measured heat capacity values of HFE-7000 and HFE-7100 were correlated by the Garg equation. The calculated values showed good agreement with the experimental values. (C) 2016 Elsevier B.V. All rights reserved.
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