Heat from the defrost heater spread into the warehouse and raised the temperature of stored products. Refrigeration equipment then had to run harder to restore the temperature after defrosting.
When heat dispersed in every direction, melting frost inside the cooler required more time and electricity.
At large facilities operating dozens of coolers, electricity wasted during multiple daily defrost cycles placed a substantial burden on operating costs.
The pocket opens during cooling to supply cold air. When defrosting starts, it immediately closes the opening so heater heat remains inside the cooler, substantially shortening defrost time.
Preventing outside cold air from entering and concentrating heat inside significantly accelerated frost melting.
A functional water-repellent fabric withstands temperatures down to −40°C and high defrost temperatures while preventing condensation, providing long-term durability.
Reducing each cycle by 10 minutes shortened refrigeration downtime and allowed more stable control of stored-product temperatures.
Reduced heater runtime and post-defrost recovery load saved approximately KRW 100,000 in electricity per cooler each month. Large facilities can potentially save tens of millions of won annually.
A substantial reduction in electricity use supported more sustainable logistics operations and also helped extend equipment service life.
Suppressing temperature swings during defrosting helped maintain the freshness of food products.
