Costa, Oliveira, Delaney, and Gekas (1999), used a steel piece
with the same geometry of one English potato and obtained values
of heat transfer coefficient between 594 ± 38 and 750 ± 59 W/m2 K
and for French fries found values of h between 443 ± 32 and
650 ± 7 W/m2 K to temperatures of 140 and 180 C, respectively.