Some issues about refrigerations system of IQF and BQF freezers (1) 2016/12/22

1 What is the refrigeration system?

freezing tunnelThe complete refrigeration system includes compressor, condenser, evaporator and auxiliaries. In our question, the system is exclusive of evaprator, because the freezers have its own evaporator. The price of refrigeration system is for compressor, condenser and auxiliaries only.

2 How does the system run?

Please see the right drawing, it is very similar to the running of air conditioner, you can google "how air conditioner works" to know how refrigeration system works.

3 The kinds of refrigeration system

Based on refrigerant: they are ammonia system and freon system, based on compressor configuration: they are piston and screw; based on ruuning model, it has single stage and double stage.

4 How to select the system?

Generally, small capacity use freon, the typical freezer is blast freezer and samll freezing rooms. For example, the blast freezer, small capaicty IQF freezer (the freezing capacity is less than 2 tons/h). The ammonia is suitable for heavy duty capacity, under the circumstances, not only the freezer need to refrigerate, but also other machines are needed too. The big food processing plant generally adopts ammonia system, because the plant has many machine need cold, apart from IQF and BQF freezers, it also has ice flake machine, ice water cooler, cold rooms, cooling rooms and etc.

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