EXPERIMENTAL STUDY OF DYNAMIC THERMAL CONDUCTIVITY OF FLUIDS FOR HEATING AND COOLING CYCLE

Mechanical Engineering

This paper reports the measurement of dynamic thermal conductivity of fluids for different Reynolds numbers in the laminar flow region. The fluids that have been traditionally used for heat transfer applications are water, ethylene glycol and engine oil. There are a number of possible ways of improving the thermal conductivity, each suitable for a limited range of materials, depending on the thermal properties and the medium temperature. We propose to use nano particles with base fluids to improve the heat transfer coefficient and thermal conductivity. But before that we needed the values of dynamic thermal conductivity of base fluids without nanoparticles. This paper discusses the results obtained in this regard. Generally, the values of thermal conductivity given in literature are for static fluid and not for the flowing fluid. Here, we have measured the values of thermal conductivity for a flowing fluid by varying the flow rates and temperature differences.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.