China Ammonia CO2 Cascade Compressor Unit for Large Cold Room

Ammonia /CO2 Cascade compressor Unit for large cold room
Why choose

CO2 refrigerant is characterized by safety, non-toxicity and incombustibility and widely applied in densely populated places including warehouses, working areas, production areas, etc. and doesn't injure personnel or pollute food.

CO2 refrigerant has larger latent heat of evaporation, large refrigerating capacity per unit of swept volume and high heat emission coefficient; good fluidity and heat transfer properties and can remarkably diminish the sizes of compressors, heat exchangers and pipes, so that the whole system is very compact.

The COP of CO2 cascade compressor rack(CO2 comparessor + other refrigerant compressor) is higher than that of the single working medium two-stage compression refrigeration system with a certain range of working conditions.

CO2 is nature working media, ODP=1, GWP=1, and has good environmental friendly performance.
Subcritical operation of CO2, perfect protective measures and control functions

Application
Mainly used in low-temperature freezing, large-scale frozen systems, ice production, ice cream production, frozen dairy products, fishing vessels, seafood processing, general frozen food processing, manufacturing, supermarkets.
Features
1.Temperature ranges from - 25 ~ - 55 degrees, can meet different temperature.
2.Adopt environmental protection refrigerants.
3.Famous brand semi-closed piston compressor, semi-hermetic screw compressor, main brand are Bitzer, Copeland, Hanbell, fusheng; Plate heat exchanger, Smallvolume, High efficiency
4.Top imported cold controller(DANFOSS pressure controller, balance valve, expansion valve, solenoid valve, filter drier, Emerson oil separator, check valve, etc.)
5.Generator cooling water circuit use intermediate heat exchanger,improve system reliability and safety.
6.DANFOSS electronic expansion valve, high precision control;
7.Adopt Siemens PLC , LNEYA touch screen, automatic control,temperature curve display, temperature record U disk, fault alarm;
8.Large cooling capacity adopts semi-hermetic screw compressor,electronic expansion valve control, high efficiency and energy saving;
9.Offer machine installation and system test, users only need to finishthe installation of refrigerant and cooling water;
10.Factory testing: each refrigerating unit is on load test of not less than12 hours in the factor
Factory show
Certificates
Patents

1<<R404A-CO2 secondary refrigerant>> 2<<a kind of R404A-CO2 cascade low temperature refrigeration system >>

Workshop process show
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