In the global cold chain logistics system, cold storage doors serve as the first line of defense for temperature control, and their sealing performance directly affects energy consumption and cargo safety.
Daily simple method: Use a "light test" every day, turn off the lights inside the warehouse at night, and check if they are transparent from the outside; Use a 0.1mm feeler gauge to check the door seal every week. If inserted beyond 5mm, the seal will fail. It is recommended to replace the silicone seal every quarter.
Replace the fast door: The new generation of fast cold storage doors (such as the German Homan V 4015 Cold) can open at a speed of 1.5m/s, with a single opening time reduced to 2 seconds, reducing cold leakage by 70%. The double door interlock can also create a stable buffer zone.
Intelligent management: Using an intelligent system with door opening counting, temperature linkage, and fault warning, it automatically triggers energy-saving when switching on or off more than 50 times a day, reducing related energy consumption by 28% and the failure rate from 12% to 3.2%.
Storage type cold storage is tested for sealing every quarter, while logistics type is tested every month;
The old cold storage only requires the replacement of sealing strips and installation of air curtains, and the cost can be recovered within 8-10 months.
How to test the sealing performance?
Professional testing method: The pressure difference method can accurately measure the leakage amount. The qualified door needs more than 60 seconds to drop to 250Pa at an initial pressure of 500Pa; The infrared thermal imager can intuitively locate the leakage point, and the door needs to be closed for 30 minutes before detection to avoid temperature fluctuations and interference.Daily simple method: Use a "light test" every day, turn off the lights inside the warehouse at night, and check if they are transparent from the outside; Use a 0.1mm feeler gauge to check the door seal every week. If inserted beyond 5mm, the seal will fail. It is recommended to replace the silicone seal every quarter.
How to solve the loss of cooling capacity due to frequent door opening?
Install air curtain: Choose an air curtain machine with a speed of 8~12m/s, which can reduce cooling loss by 60% -80%. Paired with insulation door curtains, it has a better effect and can control temperature fluctuations within ± 1 ℃.Replace the fast door: The new generation of fast cold storage doors (such as the German Homan V 4015 Cold) can open at a speed of 1.5m/s, with a single opening time reduced to 2 seconds, reducing cold leakage by 70%. The double door interlock can also create a stable buffer zone.
Intelligent management: Using an intelligent system with door opening counting, temperature linkage, and fault warning, it automatically triggers energy-saving when switching on or off more than 50 times a day, reducing related energy consumption by 28% and the failure rate from 12% to 3.2%.
Practical advice
Priority should be given to equipping high-frequency logistics channels with "fast doors+air curtains";Storage type cold storage is tested for sealing every quarter, while logistics type is tested every month;
The old cold storage only requires the replacement of sealing strips and installation of air curtains, and the cost can be recovered within 8-10 months.