Speaker
Ben Hamilton
(MIT)
Description
An instrument based on a modification to the 3-omega thermal conductivity technique that allows precise measurement of thermal properties in fluids is presented. Existing hot-wire techniques have difficulty measuring thermal conductivity because of the effects of natural convection. This device's geometry restricts fluid motion to enable a direct high-precision measurement of a fluid's thermal conductivity. In addition, this device can also measure the specific heat of the fluid. The device is described and initial measurements from low temperature to room temperature and a range of pressures for several fluids are discussed.
Author
Ben Hamilton
(MIT)
Co-author
Prof.
John Brisson
(MIT)
