As global data center power densities continue to rise – driven by AI accelerators, high‑performance computing, and next‑generation cloud infrastructure – immersion cooling has become one of the most promising technologies for ensuring thermal stability, energy efficiency, and operational resilience.

Immersion cooling uses specially formulated dielectric fluids to submerge IT hardware, enabling direct heat transfer and dramatically reducing the need for traditional air‑cooling systems. This results in higher rack densities, lower energy consumption, and significant reductions in cooling complexity.

LUVE is actively developing its solutions to support the growing adoption of immersion‑cooling architectures. LUVE has collaborated with Castrol to validate the material compatibility of LUVE’s copper brazing joints with Castrol’s advanced dielectric fluids.

LUVE + Castrol: Compatibility Testing for Immersion‑Cooling Applications

As part of LUVE’s development program for immersion‑cooling readiness, Castrol conducted a detailed evaluation of the compatibility between:

• LUVE copper brazing joints, including multiple alloy compositions
• Castrol dielectric fluids DC15 and DC20, widely used in immersion‑cooling deployments

The goal was to ensure long‑term material stability, fluid integrity, and safe system operation.

Test Setup (Performed by Castrol)

Castrol evaluated five brazing types: each was tested with DC15, DC15 with corrosion inhibitor, and DC20 dielectric fluids. Test duration was 336 hours, at a controlled temperature of 80°C, using a forced‑draft oven with 310 ml fluid per sample.

Before testing, samples were cleaned to remove residues and oxide layers, ensuring consistent conditions.

Key Findings: compatibility between LUVE brazings and Castrol fluids

The results demonstrated excellent stability for both LUVE’s copper‑silver brazings and Castrol’s fluids under accelerated aging conditions.

1. Visual Results: across all tested copper‑brazing types, no significant visual changes were observed after immersion in DC15 or DC20 fluids.
2. Infrared Spectrum (Fluid Footprint): all fluids indicated stable chemistry and no damaging interaction with brazing materials.
3. Electrical Conductivity: only insignificant increases were detected, confirming that neither fluid degradation nor harmful ion release occurred.
4. Particulate Count: all values remained safely below upper limits, showing no abnormal shedding or particulate formation.

Overall Conclusion

According to Castrol’s final summary:

“Neither Castrol ON Immersion Cooling fluids nor copper brazing samples showed a significant change after combined accelerated aging.”

Castrol recommends flushing the system before first fill to ensure optimal long‑term fluid performance.

What these results mean for LUVE customers

The successful compatibility testing reinforces LUVE’s readiness to support immersion‑cooling deployments across mission‑critical data‑center environments.

Benefits for Operators:

• Material stability → Ensures long‑term system reliability
• Fluid integrity → Maintains dielectric performance and cooling efficiency
• Design confidence → Helps operators adopt immersion cooling without material‑compatibility concerns
• Future‑proofing → LUVE components are validated for use with widely adopted dielectric fluids

Combined with LUVE’s thermal‑engineering expertise and broad portfolio of air‑to‑liquid and liquid‑to‑liquid heat exchangers, these results position LUVE as a trusted partner for immersion‑cooling system manufacturers and data‑center operators.

As immersion cooling continues to gain traction – particularly in AI clusters, high‑performance GPU deployments, and edge‑computing environments – LUVE is committed to:

• Delivering high‑efficiency immersion‑cooling heat‑exchange solutions
• Ensuring full material compatibility with leading dielectric fluids
• Supporting sustainable, high‑temperature cooling loops
• Providing engineering guidance for safe, scalable immersion‑cooling integration

Through rigorous testing and collaboration with industry partners like Castrol, LUVE strengthens its position as a key contributor to the thermal‑management technologies powering the future of AI‑ready data centers.

We are LUVE. We are the shape of cooling.

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