To study the dynamic load of assembly cold storage under actual operating conditions

this study used prefabricated cold storage in Shanghai as the research object and tested its actual load with a refrigerated area. The results showed that the relative error of the dynamic load model of the assembly cold storage was reduced from 17.8% to 5.26% after considering the factors of goods entering

which improved the calculation accuracy of the dynamic load of the cold storage and proved that the model was accurate. MATLAB was used to establish a mathematical model of factors related to cold storage load. The results show that when the pressure difference between the inside and outside of the cold storage exceeded the optimal operating range of the air curtain machine

the load of the cold storage caused by personnel entry and exit increased with the increase in internal and external environmental differential pressure

outside relative humidity

outside temperature

and frequency of personnel entry and exit. For this type of small assembly cold storage

the load of cold storage under a high utilization rate was mainly caused by the heat and mass exchange at the door. From an economic point of view

optimizing the relevant parameters of the air curtain to extend the optimum operating range of equipment could further reduce the load of cold storage and achieve energy saving.