3 - Cooling, Freezing, Refrigeration Systems in Baking Industry
3 - Cooling, Freezing, Refrigeration Systems in Baking Industry
3 - Cooling, Freezing, Refrigeration Systems in Baking Industry
Topic:
Cooling, Freezing & Refrigerating system in
baking industry
Presented to:
Dr. Shabir Ahmad
Presented by:
Salman Khalil
Ali Ahmad Bhatti
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What is cooling in baking?
Ventilate the heat from the product or room temperature and take over with the cool.
Apart from that, the cooling system sets stable temperatures at desire.
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Bakery Cooling Systems
In-Pan Tunnel Ambient or Conditioned Coolers used for cooling products in foils or pans.
These tunnel Coolers have a mesh belt conveyor surface.
Typically are a direct horizontal transfer from a tunnel oven.
Conditioning Units are available for conditioned cooling when required.
Cooling Temperature is controlled with the System PLC.
PLC (computers used to control different electro-mechanical processes).
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1. In-Pan Tunnel Coolers
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2. Spiral Coolers
Advantages Disadvantages
Reduce food loss More costlier
Reduce food spoilage More maintenance and care require
Reduce food waste In case of system failure will result damage to
ultimate product
Improve productivity
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Freezing System
Fluidized-bed freezing
Air-blast freezing system Immersion freezing system system
Used to freeze particulate
Still or forced air is used Consist of tank having cool foods of uniform size and
Temperature is between 30- freezing media like; glycol, shape
40 C at velocity 1.5-6.0 m/s glycerol etc Product is placed on mesh
In batch equipment product Product is immersed or conveyor belt and moved
is stack in tray and in sprayed result in rapid through freezing zone in
continues equipment it is temperature reduction which cold air is directed
stack in trolley’s upward
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2. Indirect-contact freezing system
Advantages Disadvantages
Inhibit the growth of microorganisms hence System is costlier
help in preservation of foods Maintenance required
Retains product taste, texture Difficulty in cleaning belts
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Refrigerating System
Advantages Disadvantages
Design and manufacture of refrigeration Refrigerant which is use causes damage to
systems are simple environment if not properly disposed
There are no complicated parts Running cost is high because the Coefficient
of Performance (C.O.P) is very low
Maintenance cost is low
Per One Ton of refrigeration, quantity of
Refrigerant used is non-toxic, non-flammable,
refrigerant used is high compared to other
non-corrosive
systems
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