The energy efficiency has an important role on
environment and sustainable development [3] and is
also a sensitive technology problem with respect to
the freezing process for freezing quality and production
rate [4,5]. Nowadays, scientists pay more
attention to the performance of the refrigeration
system and less to the usage of the refrigeration
[6]. Results from a previous study [7] showed that
the optimal airflow pattern in the quick-freezer
would save energy without increasing the initial
investment.