Energy utilisation efficiency is an important index
that can be applied to evaluating and comparing the
performance for all kinds of quick-freezers. Efficiency of
airflow organisation can be used to evaluate the quality
of the airflow organisation and the technology level of
design for blasting quick-freezers. The uniform coefficient
of airflow organisation can be used to judge whether
the airflow organisation is designed reasonably for
some special blasting freezers. The combination of the
three indexes can be used to diagnose the existing problems
for freezers.