Cold storage sandwich panel at different temperatures
The design of the cold storage will set different temperature ranges according to the needs of the stored items to ensure quality and safety. It can be divided into fresh storage, refrigerated storage, quick-freezing storage, low-temperature storage, and special cold storage.
The thickness of the cold storage sandwich panel is closely related to the temperature of the cold storage. Therefore, Duowei has set cold storage sandwich panels of different thicknesses to ensure the insulation effect. The greater the temperature difference between the inside and outside of the cold storage, the thicker the cold storage sandwich panel is required to maintain the low temperature.
The PIR cold storage sandwich panel produced by Duowei has good thermal insulation performance, which can effectively reduce the leakage of cold air, reduce energy consumption, and maintain the required temperature environment in cold storage.
| The Specifications of Cold Storage Sandwich Panel | ||||
| Thickness range | Temperature difference between inside and outside | Height of wall panel | Length of roof panel | Applicable cold storage temperature |
| mm | ℃ | m* | m** | ℃ |
| 100 | 30 | 5 | 4.45 | -15 |
| 125 | 35 | 5.5 | 5.2 | -20 |
| 150 | 50 | 6 | 5.85 | -25 |
| 175 | 65 | 6.5 | 6.3 | -30 |
| 200 | 75 | 7 | 6.8 | -40 |
The data shown in the table are only available for the panel which is subject to the internal external pressure difference and contraction pressure, without wind load. If the specified length/ height is exceeded or wind load occurs, panel supporters are required. The above data are calculated according to the heat flow of 8~10W/m2.
Properties of Duowei cold storage sandwich panel
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Performance of Duowei VCOOL PIR cold storage sandwich panel |
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Performance requirements |
Key parameters |
Test reference |
VCOOL PIR |
|
Fireproof |
Flammability |
GB8624-2012 |
B1 级 |
|
Energy saving and insulation |
Thermal conductivity |
GB/T10297 |
0.022 |
|
Weather-proof application |
Dimensional stability |
GB/T8811 |
<1% |
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Moisture-proof and isolated |
Water absorption |
GB/T8810 |
<3% |
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Density strength |
Density* |
GB/T6343 |
38 |
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Comprehensive strength |
GB/T8813 |
≥150 |
|
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Bending resistance** |
GBT8812.1 |
≤2.5 |
|
Note:
*Test the mechanical performance against set density;
**Set sandwich panel 100mm thick;
Test reference: Insulated Sandwich Panel for Metal Surfaces of Buildings (GB/T23932-2009) and Insulated Sandwich Panels for Combined Cold storage (JB/T6527-2006)
Parameters in the table are referred to the current test report. Product parameters are subject to change, please refer to the latest test report.
Recommended Type
 |
Recommended Type | ||
| Parameter | Profile | Steel Sheet | |
| Thickness of interior/exterior facing (mm) | Ripple (R) (Exterior facing) |
0.45-0.8 | |
| Square (S) | |||
| Flat (F) | 0.6-0.8 | ||
| Effective width (mm) | 500-1150 | ||
| Thickness (mm) | 100/125/150/175/200/250 | ||
| Decorative gap (mm) | 0 | ||
| Core material | PIR | ||
Packaging of cold storage sandwich panel
Packaging
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