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Heat from unit-cooler defrost heaters can spread into the warehouse after melting frost, raising storage temperatures and requiring additional refrigeration to restore them.
Frozen-food storage requires repeated defrosting of unit coolers. Ineffective frost removal lengthens defrost cycles and can increase both heater and refrigeration runtime.
After defrost heat spreads throughout the warehouse, refrigeration must run longer to return the space to its setpoint, increasing electricity consumption and equipment workload.
The pocket was manufactured for the cooler’s size and position. During defrosting, it surrounds the discharge area and concentrates heat near the cooler while allowing normal airflow during cooling.
The design retains heater heat around the frosted heat exchanger instead of allowing it to disperse directly into storage. This concentrates heat where needed and reduces losses.
The pocket was added without major replacement of the existing coolers or refrigeration equipment. Using the current system minimized construction scope and operational disruption.
Surrounding the cooler discharge area reduced heat spreading into the warehouse, minimizing unnecessary heat entering storage during defrosting.
Concentrating heat around the heat exchanger made it more effective for melting frost, improving repeated defrost cycles and reducing the burden of long defrost operation.
Reducing defrost heat entering the warehouse also lowers recovery cooling demand, supporting reduced refrigeration runtime and electricity use.
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