CHILLER SPACE

PRELIMINARY DATA SHEET · REV A

CS1

150 KW THERMAL REJECTION MODULE · PUMPED LOOP · FLIGHT-PROVEN CLASS

Standard drop-in thermal module for high-power spacecraft: microchannel cold plates, closed warm PGW pumped loop, and a two-sided deployable tube-and-fin radiator. Bolts to the host vehicle and ties into the customer coolant loop at a single fluid interface. Anchored on an NVIDIA GB300 NVL72-class rack; the same module serves any 150 kW-class heat source.

TABLE 01 — HEADLINE SPECIFICATION

HEAT REJECTION

150 kW module — flight-proven class

ANCHOR LOAD

NVIDIA GB300 NVL72-class rack — ~140 kW · 117 cold-plate interfaces

RADIATOR

Metal tube-and-fin · two-sided · ~345 K · edge-on to sun

RADIATOR AREA

~110 m² deployable

WORKING FLUID

Propylene-glycol-water (PGW) · closed warm loop

LOOP FLOW

~2 kg/s at ~20 K rise

PUMP

N+1 redundant · hot-swappable BLDC · ~1–1.5 kW electric

COLD PLATE

Metal microchannel (baseline) → direct-die / liquid-metal option

MOUNTING

A: direct GPU mount · B: solar-wing back mount

HERITAGE / TRL

Proven pumped-loop architecture · TRL 7 family

THERMAL CHAIN — CHIP SIDE TO SPACE

01TIM2 interface — customer lid → cold plate; spec begins at the lid

02Cold plate — metal microchannel per GPU / CPU / switch

03Pumped loop — PGW · ~2 kg/s · 20 K rise

04Pump — N+1 · hot-swappable · only moving part

05Radiator — tube-and-fin · ~345 K · both faces

06Structure — booms · Whipple shield · brackets (scope per customer)

ANCHOR LOAD — GB300 NVL72-CLASS

72 × GPU @ ~1.4 kW~101 kW

36 × Grace CPU · 9 × switch trayincl.

Rack total~140 kW

CS1 rating150 kW

NAMING

CS1 standard 150 kW class · CS1-2 size variant · CS1 Rev B design revision

Scope & interfaces. Chiller Space scope begins at the TIM2 layer (package lid) and ends at space. Die-to-lid TIM remains with the customer. Deploy booms, Whipple micrometeoroid shielding, and mounting brackets are shared scope, settled per customer during ICD. A full Interface Control Document is available to qualified buyers under NDA — request via the site or contact@chillerspace.com.

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PRELIMINARY — SPECIFICATIONS SUBJECT TO CHANGE · NOT AN OFFER OR QUOTATION

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