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| Symbol | Name |
|
| Inner heat transfer coefficient of the condenser tube |
| (kg) | Weight of refrigerant in the condensing tube |
| Air side heat transfer coefficient of the condenser tube |
| (J /(kg°C)) | Heat capacity of unit length of the condensing tube wall |
| (°C) | Temperature of the outdoor ambient |
| Inner heat transfer coefficient of the evaporator tube |
| (kg) | Weight of the refrigerant in the evaporator tube |
| (mm2) | Evaporation temperature of the refrigerant |
| (mm2) | Heat transfer area of air side the evaporator tube |
| (mm) | Length of the evaporator pipe |
| (mm2) | Heat transfer area of the wall in the storage room |
| (kg/mm3) | Density of the air |
| (mm3) | Area of the storage room |
| Heat load of the objects in the storage room |
| Ratio of gaseous refrigerant in suction of the compressor |
| Magnetic pole logarithm of the motor |
| (Pa) | Outlet pressure of the electronic expansion valve |
| Flow coefficient of the electronic expansion valve |
| (mm2) | Heat transfer area of the inner condenser tube |
| (°C) | Condensation temperature of the refrigerant |
| (mm2) | Heat transfer area of the air side condenser tube |
| (mm) | Length of the condensing pipe |
| (°C) | Temperature of the condensation tube wall |
| (mm2) | Heat transfer area of the evaporator tube |
| (mm2) | Temperature of the evaporator tube wall |
| Air side heat transfer coefficient of the evaporator tube |
| (J/(kg°C)) | Heat capacity of unit length of the evaporator tube wall |
| Comprehensive heat transfer coefficient of the wall in the storage room |
| (J/(kg°C)) | Heat capacity of the objects in the storage room |
| Constant pressure specific heat of the air |
| Comprehensive heat transfer coefficient of the evaporator |
| Swept volume of the compressor |
| (r/s) | Speed difference of the motor |
| (Pa) | Inlet pressure of the electronic expansion valve |
| Multidegree index |
| (kg/mm3) | Density of inlet refrigerant of the electronic expansion valve |
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