CDUs & Direct Liquid Cooling

Accelsius upgrades Austin lab for multi-megawatt two-phase liquid cooling tests

What changed

Accelsius said it has raised the power capacity of its Springdale lab in Austin, Texas, to multi-megawatt levels so it can test its NeuCool two-phase direct-to-chip cooling at megawatt-class rack loads and on warm facility water. It plans to add 18,000 square feet to its lease at the site in January 2027. The company also repeated earlier benchmark claims against single-phase cooling and said a 375 kW-capable multi-rack unit will follow the MR250, with details still to come. The benchmark and energy figures are vendor claims.

Why it matters Editorial analysis

Test capacity at full rack and row scale is one of the gaps for two-phase direct-to-chip cooling, which has less field history than single-phase cold plates. Buyers can use vendor labs to witness tests at their own design water temperatures before committing, but results from a vendor facility are not independent verification.

Questions a buyer should ask

  • Can we witness a test at our own facility water temperature and rack power, and receive the raw data?
  • Which refrigerant does the system use, and what are its handling, leak detection and end-of-life rules in my region?
  • When will the 375 kW-capable unit be orderable, and what rating conditions will its capacity be quoted at?

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