Experiment of multi-component hydrocarbon fuels RP-3 thermal conductivity

Based on the classic trasient hot-wire princeple, the experiment apparatus for the measurement of multicomponent hydrocarbon fuel thermal conductivity under high temperature and high pressure was introduced. The calibration results of absolute ethyl alcohol, toluene and high pressure nitrogen show that the maxmum deviation for liquid thermal conductivity is less than 1% and for gas is less than 3%. After that, conductivity of domestic hydrocarbon fuel RP-3 was measured under 298~430 K and 0.1~5 MPa using this apparatus and the results show a good repeatibility. It is of great importance to improve conductivity measuring methods for fluid under super-critical pressure.