Achieve Energy Savings with Karsey Industry Cold Storage Doors
1. Insulation Quality and Polyurethane Density
The internal filling material of cold room doors is typically polyurethane. For energy efficiency, the density of this filling is of critical importance.
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Break Thermal Bridges: Correct insulation of thermal bridges between the door leaf and the frame prevents hot outside air from leaking inside.
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Thickness Selection: Selecting the correct door panel thickness based on the storage temperature (such as -20°C or +4°C) directly reduces static heat loss.
2. Gasket System and Sealing
No matter how thick a door is, it will cause energy waste if air leaks through the edges.
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Dual-Stage Gaskets: EPDM gaskets that do not lose their flexibility and completely cut off air flow when the door is closed should be preferred.
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Heating Resistors: In frozen storage rooms (-18°C and below), resistors used to prevent door gaskets from freezing and sticking ensure that the door always closes fully and remains airtight.
3. Selecting the Right Door Type
Choosing a door suitable for the intended use increases operational speed while reducing energy loss:
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Sliding Doors: Ideal for wide openings and can be equipped with fast opening/closing mechanisms.
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High-Speed Fabric Doors: In warehouses with very high traffic, they act as an air curtain in front of the main insulated door to minimize heat exchange.
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Hinged Doors: Offer high sealing performance for smaller and less frequently used areas.
4. Use of Automation and Sensors
Every second a door remains open means the cooling unit has to work harder.
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Automatic Closers: These eliminate human error and ensure the door always remains closed.
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Radar and Pull-Cord Switches: These allow forklift operators to open the door and pass through quickly without leaving the vehicle, minimizing the open time.
5. Impact of Periodic Maintenance on Savings
Worn-out gaskets or misaligned hinges over time lead to invisible heat leaks. Regularly:
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Gasket integrity must be checked,
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Mechanical parts must be lubricated,
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It must be ensured that the door closes completely.