An experimental setup for isobaric heat capacities for viscous fluids at high pressure: Squalane, bis(2-ethylhexyl) sebacate and bis(2-ethylhexyl) phthalate

作者：Lugo Luis; Segovia Jose J^*; Carmen Martin M; Fernandez Josefa; Villamanan Miguel A

来源：Journal of Chemical Thermodynamics, 2012, 49: 75-80.

DOI：10.1016/j.jct.2012.01.011

• Heat capacities
• Squalane (SQN)
• Bis(2-ethylhexyl) sebacate (DEHS)
• Bis(2-ethylhexyl) phthalate (DEHP)
• High pressure

A high-pressure flow calorimeter has been used to determine highly accurate isobaric heat capacities for different viscous fluids, squalane (SQN), bis(2-ethylhexyl) sebacate (DEHS) and bis(2-ethylhexyl) phthalate (DEHP) from T = (293.15 to 353.15) K and up to 30 MPa. The experimental device was adapted for viscous liquids at high pressure and it can measure heat capacities with an estimated total uncertainty better than 1%. The isobaric heat capacity values were analysed together with their temperature and pressure dependences. In addition, a fitting equation of the experimental molar isobaric heat capacity for these viscous fluids as a function of temperature and pressure was proposed.

• 出版日期2012-6