Vansim (Dongguan)Hardware Products Co., Ltd.
Heat sink thermal simulation case
Jan 03,2025
1. Hot design objective
Design a heat sink using simulation software and select a suitable fan to meet the product's heat dissipation performance requirements
When the ambient temperature is 40 ℃, the surface temperature of the radiator is ≤ 85 ℃
2. Design Information
- Application conditions
Cooling method: forced air cooling
Environmental temperature: 40 ℃
Heat dissipation power: 1100W
Temperature rise requirement: radiator surface ≤ 85 ℃
- Heat sink size
150mmx198mmx60mm
3. Thermal simulation model
Simplified thermal analysis model
Heat source distribution
4. Scheme and simulation
1. Option 1, shovel tooth radiator
Explanation of heat dissipation scheme
Surface temperature of radiator
Profile temperature distribution
Fan operating point
2. Option 2, shovel tooth radiator+heat pipe
Explanation of heat dissipation scheme
Surface temperature of radiator
Profile temperature distribution
Fan operating point
5. Conclusion
Summary of simulation data
| Serial Number | Scheme | Describe | On the radiator Surface temperature ℃ | Under the radiator Surface temperature ℃ |
| 1 | Scheme1 | Spade tooth radiator, without heat pipe | 80.7 | 79.9 |
| 2 | Scheme2 | Scrap tooth radiator, with 5pcs of heat pipes buried on each upper and lower substrate | 71.3 | 71.1 |
Conclusion&Suggestions
1. Heat dissipation scheme 1 is composed of two shovel tooth heat sinks assembled and combined with 4pcs 9GA0412P3K01 fans. Through simulation analysis, the surface temperature of the heat sink at 80.7 ℃ can meet the requirement of less than 85 ℃, but there is a risk due to the small temperature margin;
2. Heat dissipation scheme 2, based on scheme 1, embeds 5pcs of Φ 8mm heat pipes in the upper and lower substrates of the heat sink. The simulated temperature on the surface of the heat sink drops to 71.3 ℃, with a large margin for temperature rise;
Therefore, it is recommended to use a shovel toothed radiator with buried heat pipes to match 4pcs 9GA0412P3K01 fans for heat dissipation.
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