Spoljašnji Kriorashlađivač

The Equinox GPU uključuje an LN2 fill port but no means of automated cooling. For brief sessions, manual filling from a dewar is adequate — pour LN2 into the port, wait for it to boil off, refill. But sustained compute workloads zahtijevati sustained cooling, and a human with a dewar is neither a reliable nor a dignified cooling rešenje. The Vanjski Cryo Cooler pruža kontinuiran, automated LN2 delivery to one or two Equinox GPUs for do eight hours from a single fill.

The sistem is a closed loop. LN2 flows from the 2-liter dewar kroz a vakuumski izoliran transfer line to the GPU's cold plate, apsorbuje heat from the YBCO superprovodljivi VRM and the die, returns as cold nitrogen gas kroz a second vakuumski izoliran line, and re-enters the dewar where it re-condenses protiv the remaining LN2 inventory. The loop is driven by a magnetically levitated centrifugal pump — the same zero-contact ležaj tehnologija used in turbomolecular vakuum pumps. The magnetski levitation eliminiše mehanički ležajevi, which would prenijeti vibracija to the LN2 column and from there to the GPU cold plate, potentially creating microphonic šum in the solder joints.

The flow rate is adjustable from 50 to 400 mL/min. Higher flow rates pružiti more aggressive cooling and tighter temperatura stabilnost (±0.3K vs. ±0.8K at low flow), but consume LN2 faster because the higher flow rate increases heat ingress kroz the transfer lines. For a single Equinox GPU at full load (450W GPU + VRM dissipation), the optimalan flow rate is približno 200 mL/min, which pruža ±0.5K stabilnost and 8 hours of autonomy from a full dewar. For dual GPU configurations, the flow rate must be increased to 350 mL/min, reducing autonomy to približno 4 hours.

The dewar is vakuumski izoliran with a calculated boil-off rate of 0.3% na sat when idle — meaning that a full dewar left unpowered will retain 93% of its LN2 inventory nakon 24 hours. The top-mounted fill port accepts standard dewar nozzles and can be used tokom operation bez shutting down the pump. The 2.4-inch LCD displays temperatura at the GPU cold plate, flow rate, struja LN2 level (by weight sensor), and estimated time remaining at struja consumption rate. An čujan alarm sounds when the dewar reaches 10% capacity, and the pump shuts down automatically at 5% to spriječiti dry running.

The quick-disconnect fittings are rated for kriogeni service to 77K and can be connected or disconnected bez tools. Each fitting uključuje a check valve that sprečava LN2 from spilling when disconnected. The transfer lines are 1 meter long and flexible enough to route kroz a standard desktop case bez sharp bends that would restrict flow.