1. What are the advantages of liquid nitrogen quick freezing
compared with the traditional freezers and iqf freezer?
DJL reply: Before answering this question, it is necessary for us
to clarify the standard definition of quick freezing: quick
freezing of food is to place the pre-processed food into a
low-temperature device, pass through the largest ice crystal
formation zone within 30 minutes, and the central temperature drops
from 0℃ to Below -5℃, the diameter of the ice crystals formed is
less than 100μm, and the center temperature of the food after quick
freezing must reach the food freezing technology below -18℃. Due to
its fast speed, the cell integrity of liquid nitrogen quick-frozen
food was much higher than that of traditional freezing method, and
the cell damage rate was nearly 80% less than that of slow-freezing
food, so its taste, nutrition and color are much better than slow
freezing food, In terms of seafood, DJL liquid nitrogen
quick-freezing technology can be comparable to seafood in fresh
state after freezing and thawing. Therefore, liquid nitrogen
quick-freezing technology can better maintain the color, aroma,
flavor and taste of food, and its sales value will also be greatly
improved.
2. How long can the liquid nitrogen freezer be used?
DJL reply: Due to different refrigeration methods and structural
design, its service life can be up to 20 years, about twice as long
as the traditional equipment.
3. How much is the refrigeration consumption cost of liquid
nitrogen freezer?
DJL reply: The consumption cost of liquid nitrogen freezer is
mainly divided into two parts, one is the electric charge, the
other is the consumption of liquid nitrogen.The electricity cost is
negligible compared with the traditional iqf freezer.
The consumption cost of liquid nitrogen quick freezing is liquid
nitrogen. The liquid nitrogen consumption of quick-frozen food is
mainly related to several factors such as water content, effective
thickness, initial temperature, whether with packaging, and cooling
method;. According to theoretical calculation and many years of
experience at home and abroad, the consumption of liquid nitrogen
for 1 ton of quick-frozen products is generally between 0.5~2 tons,
and the consumption of liquid nitrogen for most naked frozen
products is about 1.5 tons per ton. Some companies will
deliberately say low consumption in order to get customers to buy
equipment, but what we want is for customers to have real
information to make rational decisions, rather than to be misled
into a wrong cost model. We believe that the key for customers to
choose liquid nitrogen quick-freezing technology is to greatly
improve the quality of customers' products and bring premium and
competitiveness, and the small increase in customer costs can be
absorbed by the previous two items.
The price of liquid nitrogen will vary due to consumption and
region, but if the quantity is large, the average price per ton
will be RMB600~800 per ton, and the price will be lower in a few
regions. DJL company can help customers find the lowest price of
liquid nitrogen suppliers.
