Coolant, air and immersion cooling compared
Three cooling media, and why the industry converged on liquid glycol.
You'll learn
- Explain coolant, air and immersion cooling compared at engineering level
- Read the numbers that define the behaviour
- Apply the idea to a real vehicle
Overview
Cooling media differ enormously in how much heat they can carry per litre and per kilogram of hardware. That difference decided the industry's direction years ago.
In depth
Cooling media
| Forced air | Liquid glycol | Dielectric immersion | |
|---|---|---|---|
| Heat capacity per litre | Very low | High | High |
| Uniformity across cells | Poor | Good | Excellent |
| System complexity | Very low | Moderate | High |
| Production maturity | Legacy only | Industry standard | Emerging, niche |
Immersion is coming, slowly
Dielectric fluid immersion removes hotspots almost entirely and is used in some high-performance and grid-storage applications, but sealing, service access and fluid cost still limit mainstream adoption.
Key takeaways
Remember this
- Liquid cooling carries far more heat per litre than air.
- Uniformity across cells matters as much as total heat removed.
- Immersion cooling is the frontier, not yet the mainstream.
Mark this lesson complete
Confirm you've read through and we'll count it toward your progress.
Was this lesson helpful?
Rate this lesson