As temperatures continue to drop, the operating environment of cold storage facilities undergoes significant changes. Scientifically adjusting temperature strategies can not only reduce energy consumption but also extend equipment lifespan. Winter temperature control requires focusing on the following four dimensions:The balance between ambient temperature and internal heat load is the foundation for adjustments. When the external temperature falls below the set internal temperature, the direction of heat transfer through the building envelope reverses, significantly reducing cooling loss. If summer-level cooling intensity is maintained at this stage, it will lead to frequent compressor cycling, increasing energy consumption while accelerating mechanical wear. A reasonable approach is to appropriately raise the evaporation temperature setting based on outdoor temperature changes—typically, for every 5°C drop in ambient temperature, the evaporation temperature can be increased by 1-2°C.Optimizing the defrost cycle is particularly critical. Although air humidity decreases in winter and less moisture is introduced by goods, frost formation on evaporators remains a concern. 

          It is advisable to switch from timed defrosting to intelligent demand-based defrosting, judging the degree of frost buildup by monitoring the pressure difference across the evaporator or changes in fin temperature. Simultaneously, extend the defrost intervals from 2-3 times per day in summer to 1-2 times per day, shortening each defrost duration by 20%-30% to effectively avoid energy waste caused by excessive heating.Compressor operation strategies require dynamic adjustment. When ambient temperatures are below -10°C, compressor rotation functions can be activated, keeping some units on standby. By lowering the condensing pressure setpoint (adjustable to 8-10 bar in winter), compressors operate at lower compression ratios, potentially improving energy efficiency ratios by over 15%. For systems equipped with variable frequency drives, it is recommended to stabilize the operating frequency within the 40-60 Hz range to avoid lubrication issues at low frequencies.

        Temperature fluctuation buffer mechanisms need reinforcement. During winter goods transfer, larger internal-external temperature differentials can cause sharp temperature fluctuations. Appropriately widen the control deadband, adjusting the on-off differential from 1.5°C to 2-3°C to reduce equipment cycling frequency. Simultaneously, increase indoor air circulation time, utilizing the inherent cooling capacity of stored goods to stabilize temperature variations.Winter temperature control involves establishing a dynamic balance system adapted to ambient conditions. Through refined parameter settings, large cold storage facilities can achieve 20%-30% energy savings while maintaining stable product storage quality. This tests both equipment performance and reflects the standard of cold chain management.