Shanghai Huizhou Industrial Co., Ltd.
1. Requirements
The 11L-EPS insulated box is required to maintain an internal temperature of 10℃ or below for more than 48 hours in a constant temperature environment of 32℃.
2. Configuration Parameters
2.1 Basic Information of the EPS Insulated Box + Ice Packs
| Information Type | Details |
EPS Insulated Box External Dimensions (mm)： Internal Dimensions (mm)： | 400 * 290 * 470 300 * 190 * 370 |
| Number of Ice Packs： | 14 (380g 0℃ biological ice packs) |
| Effective Dimensions (mm)： | 250 * 140 * 320 （11L） |
| Weight of EPS Insulated Box（kg）： | 0.66 kg |
| Total Weight of EPS Box + 12 Ice Packs: | 0.66 + 5.32 = 5.98 kg |
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2.2 Basic Information of the EPS Box
| Information Type | Details |
| External Dimensions (mm)： | 400 * 290 * 470 |
| Wall Thickness (mm)： | 50 |
| Internal Dimensions (mm)： | 300 * 190 * 370 |
| Volume (L)： | 21 L |
| Weight (kg)： | 0.66 kg |
2.3 Basic Information of the Ice Packs
Information Type | Details |
Dimensions (mm)： | 182 * 97 * 25 |
Phase Change Point (℃)： | 0℃ |
Weight (kg)： | 0.38 kg |
Number of Ice Packs： | 14 个 |
Total Weight (kg) | 5.32 kg |
3. Test Results
Test Curves and Data Analysis:
In a constant temperature environment of 32℃, the duration of maintaining the internal temperature below 10℃ at various points was as follows:
Location | Bottom of the Box | Bottom Corner | Front Center | Middle Center | Right Center | Top Center | Top Corner |
Duration Below 10℃ (hours) | 54.2 | 56.5 | 53.5 | 52.9 | 52.4 | 51.2 | 51.8 |
4. Test Conclusion:
In a 32℃ constant temperature environment, with 14 ice packs placed inside the box, the internal temperature remained at or below 10℃ for 51.2 hours, meeting the 48-hour insulation requirement.
5. Attachments:
5.1 Test Photos
