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二氧化碳载冷机组

 

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 CO2载冷剂模块化机组由单机双级变频螺杆压缩机、油分离器、经济器、储液器、冷凝蒸发器、气液分离器、CO2屏蔽泵、机组框架、防护门及电控等构成。

CO2载冷剂模块化机组的特点:

机组的整机防护等级高,安装位置灵活。

配套蒸发冷在环境温度-5℃以下干式运行。

机组变频控制,自动无扰变工频转换。

CO2作为中间介质具有安全、无毒、不可燃且在蒸发器内换热没有油的影响。

NH3(R404A)/CO2相变二次冷媒系统运行比NH3(R404A)/CO2复叠循环系统更加稳定,COP值不易受外部环境参数的影响。

在相同工况下,NH3(R404A)/CO2相变二次冷媒系统CO2用量比NH3(R404A)/CO2复叠循环系统的用量更少,保证了系统的安全性。

相对于NH3用量,这两种系统的用量相差不大。

 

CO2 as secondary refrigerant modular compressor rack is consisted by 2-stage inverter type screw compressor, oil separator, economizer, receiver, evaporator condenser, gas liquid separator, CO2 shielding pump, rack, protection gate and electrical control, etc。

CO2 secondary refrigerant modular compressor rack features:

Compressor rack has high level of overall protection

Its evaporating condenser runs without water circulation when ambient temp. Is below -5

Frequency variable, can change frequency automatically according to system need.

CO2 as secondary refrigerant is safe, non-toxic, anti-flaming。 Oil does not run in evaporator side。

Compared with NH3(R404A)/CO2 cascade system, CO2 secondary refrigerant refrigeration system is more stable, its COP is not easily affected by ambient condition.

Under similar working condition, CO2 as secondary refrigerant refrigeration system uses less CO2 so its more safe to use.

For NH3 side, the using amount of the two system doesnt have much difference。

 

 


NH3(R404A)/CO2复叠系统的使用CO2蒸发温度范围为-50℃以下环境。

CO2蒸发温度高于-45℃时,NH3(R404A)/CO2复叠制冷系统的运行费用和初次投资费用都高于NH3(R404A)/CO2载冷剂制冷系统。

NH3(R404A)/CO2载冷剂系统使用CO2蒸发温度范围为-45℃~0℃,CO2载冷剂系统的运行压力的限定在蒸发温度0℃是设计条件确定的,在-45℃以上,载冷剂系统的综合效率与经济性高于复叠制冷系统性能。在不追求性能指标的条件下,载冷剂系统可以使用到-52.

 

NH3(R404A)/CO2 Cascade system is used in evaporating temperature range below -50.

When CO2 evaporating temperature is above -45, the 1st stage investment and running cost for CO2 cascade refrigeration system are all higher than CO2 as secondary refrigerant system.

The using evaporating temperature range for CO2 as secondary refrigerant system is -45~0, its running pressure is set when evaporating temperature is 0, when above -45, the overall efficiency and economical efficiency are all higher than CO2 cascade refrigeration system.  CO2 secondary refrigerant can be used under -52

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