The working principle of the reefer: the performance index has the working temperature for the vapor compression chiller as the evaporation temperature and the condensing temperature, and the gas compression chiller and the semiconductor chiller are the temperature of the cold object and the temperature of the cooling medium, and the cooling capacity is cooled. The heat, power or heat consumption and cooling coefficient removed from the object to be cooled per unit time are an indicator of the economics of the compression chiller. The refrigeration cycle is completed by the action of a steam ejector jet compressor. Semiconductor refrigerator. The heat is generated by the thermo-electric effect of the semiconductor.
Application of the refrigerator: In clinical medicine, some drugs need to be stored in a sub-zero temperature environment for a long time. It is not possible to use a non-consumable refrigerator, and a refrigerator with temperature control capability must be used. This type of refrigerator has the ability to collect, heat, and cool. Closed-loop control is used to achieve precise temperature control. The basic framework is: temperature acquisition - temperature comparison is compared with set temperature - control mode selects heating or cooling - temperature acquisition. This forms a loop for precise control purposes. In addition, the PID algorithm is commonly used in the field of automatic control to achieve accurate and fast control of control targets. Fuzzy algorithms also have relevant applications in control.
Characteristics of the refrigerator: The refrigerator has higher requirements for heat resistance and cold resistance, does not deform in high temperature water, and can even be disinfected with boiling water. It has excellent impact resistance, is not easy to break when pressed or impacted, does not leave scratches, and can be used for life. Sealability This is the primary consideration for choosing a reefer. Although different brands of products are sealed in different ways, excellent sealing is a necessary condition for the long-term preservation of memory food. The international seal measurement standard is evaluated by the moisture permeability test. The high quality refrigerator is 200 times lower than the moisture permeability of similar products, and it can keep things fresh for a longer time. Versatility, diversity: Designed for different needs of life, with the use of reusable technology ice packs, ice packs can keep cold, can keep warm ice packs, can be frozen to -190 ° C, zui high can be heated to 200 ° C, can be free The cut-size food-grade environmentally friendly LLDPE material is non-toxic, odorless, UV-resistant and resistant to discoloration.
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