Abstract
A new flow calorimeter for measuring isobaric enthalphy increment and Joule-Thomson effect was built and tested during the period 1987–1993. The calorimeter has several features that reduce the heat leakage better than previous designs; this includes thermal shields cooled by propane. a heat sink, and superinsulation on all piping. The temperature and pressure range covered by the calorimeter is 133 to 343 K and 0.17 to 14 MPa. Measurements on a mixture of 68.32% methane and 31.68% propane are presented. The enthalpy increment measurements have an average standard uncertainty of 0.08 kJ · kg−1, or 0.22% of the enthalpy increment.
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Grini, P.G., Brendeng, E. & Maehlum, H.S. New enthalpy increment flow calorimeter and measurements on a mixture of 68% methane and 32% propane. Int J Thermophys 16, 167–176 (1995). https://doi.org/10.1007/BF01438967
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DOI: https://doi.org/10.1007/BF01438967