Patent ID: 8469587

Claim:
An apparatus for measuring convective heat transfer coefficients of nanofluids, comprising: a sensor unit; a transfer unit disposed on the sensor unit and configured to allow the sensor unit to longitudinally reciprocate in a direction parallel to a ground surface with the sensor unit spaced apart from the ground surface; and a liquid container arranged below and spaced apart from the sensor unit, and configured to allow a nanofluid or a base fluid, a convective heat transfer coefficient of which needs to be measured, to be put therein, wherein: a lower portion of the sensor unit is disposed in the nanofluid or the base fluid when the sensor unit longitudinally reciprocates, and the sensor unit comprises: a hot wire sensor including a metallic hot wire having a cylindrical shape; a hot wire sensor holder connected to both ends of the hot wire sensor and configured to hold the hot wire sensor in a state parallel to the ground surface; a sensor unit body disposed on the hot wire sensor holder and having a shape of a bar equipped with hollow spaces therein; and a support extending upwards from the sensor unit body and configured to connect the sensor unit body to the transfer unit and support both the sensor unit body and the transfer unit.