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
Compounds
#
Formula
Name
1
C4H3F7O
heptafluoropropyl methyl ether
2
C5H3F9O
methyl nonafluoroisobutyl ether
3
C5H3F9O
1-methoxy-nonafluorobutane
4
C2H6O
ethanol
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.
Type
Compound-#
Property
Variable
Constraint
Phase
Method
#Points
POMD
1
Molar heat capacity at constant pressure, J/K/mol ; Liquid
Temperature, K; Liquid
Pressure, kPa; Liquid
Liquid
Flow calorimetry
20
POMD
4
Molar heat capacity at constant pressure, J/K/mol ; Liquid
Temperature, K; Liquid
Pressure, kPa; Liquid
Liquid
Flow calorimetry
20
POMD
3
2
Molar heat capacity at constant pressure, J/K/mol ; Liquid