%0 Journal Article %T Costs Due to Entropy Generation in a Vertical Annulus Using Nanofluids and Different Thermophysical Models %A Kianifar, Ali %A Mahian, Omid %A Ahmet Z. Sahin %A Waqar A. Khan %A Somchai Wongwises %J Current Nanoscience %@ 1573-4137 %D 2014