Food preservation food preservation industrial freezers.
Types of freezers used in food industry pdf.
To help decide which type of freezer to buy consider these features.
Organize the food in the freezer into food groups so you can find them easily.
Portable freezers may use ac or dc power or both and some even come with cords that allow them to be powered through a car s cigarette lighter outlet.
These phase cycles allow it to cool the inside of the freezer keeping the space at the desired temperature.
They are the most common types of freezers that are used commercially.
The rate at which heat is removed from a food during freezing depends on how fast heat can travel within the food and how efficiently it can be liberated from the surface of the food into the surrounding atmosphere.
Fricke in encyclopedia of food sciences and nutrition second edition 2003.
Cryogenic freezers use liquid nitrogen or liquid carbon dioxide as the refrigeration medium and the freezers may be batch cabinets straight belt freezers spiral conveyors or liquid immersion freezers.
Place same type of foods in plastic large bags or cardboard boxes to keep together and be able to lift out to get to food at bottom of deep freeze.
Air blast tunnel or plate freezers are common within the food industry and offer several advantages to food producers including flexibility ease of operation and economy of operation for large pro duction volumes.
Refrigerants are used in cars air conditioners and home appliances and most notably refrigerators and freezers.
There are five types of freezers available.
This is what causes the food in a freezer to freeze.
The development of small portable freezers has made it possible to transport items in danger of spoiling without the mess and inconvenience of a cooler filled with ice.
Typically the refrigerant when used in a freezer is converted from liquid to gas and then back again.
Place heavier items to the bottom of freezer.
How to defrost a freezer 1.
While cryogenic freezers represent a low initial investment they have a.
Freezers are useful and long lasting home appliances.
Chest freezers are also called reach in freezers.
Modern air blast freezers use space efficient and energy efficient vertical air flow via prod uct lines.
You can choose the type that suits your requirements.
Turn the freezer off.
Different types of food freezing technology.
In the past freezing food was as simple as surrounding it with a block of freshly carved ice to keep its core temperature lowered.
As a rule of thumb you ll need 1 5 cubic feet of space per person.
