Cold storage cooling methods

1 Cooling System Components

2 Cooling

3 Compressors

4 Tasks The evaporator absorbs the refrigerant formed at such a tempo that the evaporator is somehow sabit constant, low pressure ve and therefore düşük low temperature oluş. It compresses the cold refrigerant vapor absorbed from the evaporator to a pressure that it can condense in the condenser and likes it to the condenser.

5 Compressor characteristics Compatible with continuous capacity control and wide load change No reduction in efficiency in partial loads Long life and minimum failure operation Safe and reliable operation Providing maximum cooling value with minimum power Low torque at first starts. being

6 Types Piston / Hermetic Compressor: small and medium capacity systems Positive Compression Compressors: high pressure aware Rotor / Crawler Compressor: refrigerators Screw / Helical Compressor: large cooling systems Turbo (Centrifugal) Compressor: large cooling systems

7 Reciprocating Compressor

8 Rotor Compressor

9 Screw Compressor

10 Turbo (Centrifugal) Compressor

11 Condenser

12 Tasks It is the part that converts the heat that the refrigerant receives from the evaporator as it evaporates into the ambient air from the superheated vapor state to the compressed liquid. In other words, it is a heat exchanger that removes the heat taken from the system by the heat and compression received by the fluid from the evaporator.

13 Air Cooled Condenser

14 Water Cooled Condenser

15 Mixer condensers

16 Evaporators

17 Tasks Liquid is the part where the refrigerant evaporates. This is the part of cooling. It is provided to evaporate the fluid by drawing heat from the environment to be cooled. It is made of metal pipes with good thermal conductivity.

18 Factors effective in evaporator selection Cooling capacity Room temperature and relative humidity Room temperature-evaporation temperature difference Room temperature-air blowing temperature difference Room dimensions Air flow rate

19 Air-cooled The air is cooled to allow food to cool by heat transfer.

20 Bare Tube Evaporators In large cooling systems In systems using ammonia

21 Plate Evaporators Refrigerators Refrigerators and showcases

22 Plate Evaporators

23 Finned Tube Evaporators Usually for air cooling

24 Lamella Evaporators Rods are used to increase surface area instead of vanes. Used in small systems.

25 Liquid cooled Cool liquids such as water, brine, antifreeze, methylene glycol.

26 Double Pipe Evaporator When dual flow can be used, it is suitable for heat transfer. Expensive Space occupies Not common

27 Body Tube Evaporators Takes up little space. High capacity. Easy to maintain.

28 Immersion (Spiral Tube) Evaporators For cooling small capacity liquids Generally for drinking water cooling

29 Pool Type Evaporators Used for cooling secondary refrigerators.

30 Spray evaporators: The refrigerant is vaporized by spraying on the pipes through which the liquid to be cooled passes. Liquid film evaporators: The fluid to be cooled is cooled by flowing like a film over the pipes through which the refrigerant passes.

31 Solid Cooler Evaporators Cooling is achieved by direct contact of solid material with refrigerant.

32 Evaporators according to application area Standard room coolers Cabin room coolers Very low speed room coolers Industrial coolers Evaporators used in shock freezers

33 SNAPPING ON EVAPORATORS The evaporator surface is at the lowest temperature. Therefore, if the room humidity is above a certain level, the moisture in the air will begin to condense. If it is below 0 C, it will freeze. This is called SNAPPING. DEFROST process is required because snowing causes quality and weight loss in foods.

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Cold storage cooling methods

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