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Your Location: Home >> News >> Technical support >> How to buy Industrial vacuum freeze dryer and how to pick?

How to buy Industrial vacuum freeze dryer and how to pick?

Release Date: 2018/9/12 15:54:44 .
Browse: 488

  How to buy Industrial vacuum freeze dryer and how to pick?
  The scientific and rational structure design of the Industrial vacuum freeze dryer is novel, beautiful and elegant, convenient in operation, maintenance and maintenance, and easy to install (without foundation). The refrigeration system and the air system of the Industrial vacuum freeze dryer are comprehensively and accurately calculated by experts in combination with the differences in different working conditions across the country. The design parameters are left with a margin of more than 20%. Industrial vacuum freeze dryer technology is widely used in chemical industry, biological products and other fields. Industrial vacuum freeze dryers are in the leading position in the world refrigeration industry.
  Industrial vacuum freeze dryer selection should be based on the cooling load and use to consider. For a refrigeration system with a long period of low load operating conditions, multiple head piston compressors or screw compressors should be used to facilitate adjustment and energy saving. The main control parameters of the Industrial vacuum freeze dryer are refrigeration performance coefficient, rated cooling capacity, input power and refrigerant type.
  When using Industrial vacuum freeze dryers, attention should be paid to nominal conditions. The actual cooling capacity of a Industrial vacuum freeze dryer is related to the following factors:
  a) Cold water outlet temperature and flow;
  b) Cooling water inlet temperature, flow rate and fouling factor.
  When usingIndustrial vacuum freeze dryers, priority is given to units with higher values of performance factors. According to statistics, the general Industrial vacuum freeze dryer operates at 100% load for less than 1/4 of the total operating time. The proportion of running time for 100%, 75%, 50%, and 25% of the total operating time was approximately 2.3%, 41.5%, 46.1%, and 10.1%. Therefore, in the selection of Industrial vacuum freeze dryer should give priority to consider a relatively flat efficiency model. At the same time, the adjustment range of the load of the Industrial vacuum freeze dryer should be considered when designing. The multi-head screw chiller has excellent partial load performance and can be selected according to actual conditions. Second, it should also pay attention to the normal operating range of this type of Industrial vacuum freeze dryer, mainly the current limit of the main motor is the current value of the shaft power under nominal conditions.
  In the design selection, it should be noted that the outlet temperature of cold water should not exceed 15°C under nominal operating conditions, and the outdoor dry bulb temperature of air-cooled units should not exceed 43°C. If it is necessary to exceed the above range, it should be understood whether the scope of use of the compressor is allowed and whether the power of the main motor equipped is sufficient.

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