• L S Verma

      Articles written in Pramana – Journal of Physics

    • Differential temperature sensors method for simultaneous determination of thermal conductivity and diffusivity

      L S Verma A K Shrotriya Ramvir Singh D R Chaudhary

      More Details Abstract Fulltext PDF

      An attempt has been made to minimize the sources of error involved in the transient probe method for thermal conductivity determination. Two sensors (thermocouples) are mounted parallel to the needle probe at known distances. This modification makes it a device for simultaneous conductivity and diffusivity determination. Thermal conductivity and diffusivity for glycerine, dune sand and mustard seed are determined by this method. Results obtained are compared with those obtained by a calibrated transient probe for conductivity and by a parallel wire method for diffusivity. Analysis of the results prove it to be a better instrument over the traditional ones. The technique can also be used as a direct reading device for conductivity and diffusivity measurements.

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