For t1 < t6t1 t2 and t1 t2 < t6t1 t2 t3, during
the stages of transport in the air towards the mechanical
freezer at room temperature and of freezing
in the air-blast, respectively, h is much lower and constant
in both cases (within 7 W mÿ2 Kÿ1 and 30±45
W mÿ2 Kÿ1, respectively