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Cryogenic Freezing -With Quality and Speed
Benefits:
• High quality frozen goods• Minimal water losses• Low investment costs• Easy to operate• Simple construction; fewer repair costs• Rapid start-up• Small footprint
Cryogenic nitrogen or carbon dioxide not onlyachieve this very effectively, they do soeconomically as well. In Messer's cryogenicfreezing applications named Cryogen®-Rapid thegoods to be frozen come into direct contact withthe refrigerant.
Very low levels of moisture are required tosaturate the atmosphere with water vapour as aresult of the low temperatures prevailing in thefreezer. In all Cryogen®-Rapid freezers thisprevents drying out of the goods and theconsequent undesirable weight loss. Particularly,expensive or prepared foods such as meat,prepared meat products, convenience food,baked goods, fish, shellfish, asparagus,mushrooms and berries stay fresh and healthy!
Messer Group GmbHGahlingspfad 31
47803 KrefeldTel. +49 2151 7811-0
Fax +49 2151 [email protected]
www.messergroup.com
Cryogenic Freezing SystemsWhereas mechanical freezers are generally onlydesigned for a specific cooling capacity, Cryogen®-Rapid cooling systems operated with either liquidnitrogen or liquid carbon dioxide have a verybroad capacity range.
They also have a comparatively low purchaseprice, are very flexible, can easily be expandedand furthermore are much smaller than acomparable mechanical system. Special civilconstructions (e.g. a machine room with theappropriate high electrical capacity) are notrequired. Cryogen®-Rapid plants are not fixedinstallations and are easy to transport. Thenecessary refrigerant storage tanks stand outside.
N2 and CO2 – The Ideal RefrigerantsFood products have to be frozen as gently aspossible so that when defrosted they can beserved fresh and appetizing. A prerequisite forthis is “fast cold”. The water contained in thecells must freeze very quickly (faster than 5 cm/h)in order to ensure the formation of very small icecrystals that do not damage the cell material.
Not applicable for Germany, UK and USASubject to change without notices© Copyright Messer Group GmbH01/06 / 1.EN0.801 / ML05en - v3a
Cryogen®-Rapid system
Compressorsystem
Product coreProduct surfaceAtmosphere in thefreezer
[min] [min]
Circulationfans
Liquidnitrogennozzles
Pneumaticcontrol valve
Precoolingzone
Post coolingzone
Liquidnitrogenstorage
tank
Exhaustfan
Throttlevalve
Freezerinlet
