Helping You Choose the Right Air Cooler for Your Project
Selecting the right air cooler depends on: cooling capacity, storage temperature, evaporation temperature, heat transfer efficiency, and refrigerant type.
1. Understand the Temperature Difference (ΔT)
The cooling performance is based on the temperature difference between the cold room and the evaporation temperature:
ΔT = TC - TE
| Working Condition | SC1 | SC2 | SC3 | SC4 |
| Cold Room Temp | 10°C | 0°C | -18°C | -25°C |
| Expected Evap. Temp | 0°C | -8°C | -25°C | -31°C |
| ΔT | 10K | 8K | 7K | 6K |
2. Temperature Correction Factors
Based on: Evap. Temp = -8°C, Storage Temp = 0°C, Standard ΔT = 8K
| ΔT (K) | Cold Room Temp (°C) |
| -30 | -25 | -20 | -15 | -10 | -5 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 8 |
| 6 | 0.66 | 0.68 | 0.68 | 0.70 | 0.71 | 0.73 | 0.75 | 0.78 | 0.80 | 0.83 | 0.85 | 0.88 | 0.88 | 0.88 |
| 7 | 0.76 | 0.76 | 0.77 | 0.79 | 0.81 | 0.83 | 0.85 | 0.87 | 0.90 | 0.94 | 0.97 | 1.00 | 1.03 | 1.03 |
| 8 | 0.89 | 0.89 | 0.90 | 0.93 | 0.95 | 0.98 | 1.00 | 1.04 | 1.07 | 1.10 | 1.14 | 1.17 | 1.17 | 1.17 |
| 9 | 0.98 | 0.99 | 0.99 | 1.02 | 1.04 | 1.07 | 1.10 | 1.13 | 1.16 | 1.20 | 1.24 | 1.28 | 1.32 | 1.32 |
| 10 | 1.07 | 1.08 | 1.09 | 1.13 | 1.16 | 1.20 | 1.23 | 1.28 | 1.34 | 1.38 | 1.42 | 1.47 | 1.47 | 1.47 |
3. Refrigerant Correction Factors
| Refrigerant | Cold Room Temp (°C) |
| -35 | -30 | -25 | -20 | -15 | -10 | -5 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 8 | 10 | 12 |
| R404A | 1.0 |
| R507A | 1.0 |
| R22 | 0.95 |
4. Fin Material Correction
| Fin Material | Correction Factor |
| Light Aluminum Foil | 1.00 |
| Coated Aluminum Foil | 0.97 |
5. Recommended Fin Spacing
| Room Temp (°C) | Recommended Fin Spacing |
| 0 – 15°C | 4.5 mm |
| -5 – -20°C | 6.0 mm |
| -23 – -28°C | 8.0 mm |
| -30 – -35°C | 10.0 mm |
Why ARTECO?
We provide not only high-quality air coolers, but also expert support to help you select the ideal model for your system. Let our professionals assist your project with confidence.
marketing@artecomy.com
+86 13318205909
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