VR-COV-VR-INLET-MIN
① SA Source
- Source: 開啟完整 SA 文章
- Section:
Rack Level Infrastructure: Thermal - Line hint:
575
Context Before
Source: Vertiv
Although NVIDIA initially did not formally publish full specifications for Vera Rubin’s liquid cooling system, we believe the platform will support maximum coolant return temperatures up to 65C. This aligns with Nvidia’s warm-water operating envelope, and while the exact implication for delta-T depends on the chosen supply setpoint and flow control strategy, we can expect a slightly tighten delta-T. The pressure envelope is expected to be unchanged versus GB200, with maximum operating pressure of 72 psig (5 bar) and minimum burst pressure of 217 psig (15 bar), aligning with OCP’s MGX rack-level liquid-cooling specification.
Evidence
Context After
Source: Nvidia VR NVL72 Component BoM and Power Budget Model ↗
In practice, cooling follows straightforward physics. To cool a system, you must deliver sufficient water/coolant at the appropriate temperature and pressure through the loop. If you want to increase the cooling capacity of a CDU, you increase flow rate while managing pressure, which in this case implies around a 2.0-2.5x flow increase, depending on how far outlet temperatures are actually pushed by operators.
② Atomic Claim
The NVIDIA coolant envelope table specifies a minimum coolant inlet temperature of 17°C.
- Epistemic Mode:
ATTRIBUTED - Mapping Status:
COMPLETE
③ Semantic Frame
{
"attribute": "NVIDIA_COOLANT_INLET_MINIMUM",
"context_nodes": [],
"entity": {
"id": "04_knowledge_base/Cold plate",
"label": "Cold plate"
},
"frame_type": "ATTRIBUTE",
"qualifiers": {
"condition_text": null,
"numeric_mentions": [],
"temporal_mentions": []
},
"value": {
"numeric_mentions": [],
"value_text": "17°C"
}
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| entity | Cold plate | 04_knowledge_base/Cold plate |
⑤ V2 Draft（需要修正時直接編輯）
Inline repair
只編輯以下三個 Draft 區塊。完成後將
review_action設為REQUEST_REPAIR，再手動執行 Repair Preview。
執行腳本前，Draft 不會寫入 Claim Store 或 Graph。
V2 Atomic Claim Draft
The NVIDIA coolant envelope table specifies a minimum coolant inlet temperature of 17°C.
V2 Semantic Frame Draft
{
"attribute": "NVIDIA_COOLANT_INLET_MINIMUM",
"context_nodes": [],
"entity": {
"id": "04_knowledge_base/Cold plate",
"label": "Cold plate"
},
"frame_type": "ATTRIBUTE",
"qualifiers": {
"condition_text": null,
"numeric_mentions": [],
"temporal_mentions": []
},
"value": {
"numeric_mentions": [],
"value_text": "17°C"
}
}V2 Revision Metadata Draft
{
"epistemic_mode": "ATTRIBUTED",
"mapping_status": "COMPLETE"
}⑥ Human Review
請在 Properties 逐項確認：
- 原文 → Atomic Claim 是否忠實
- Atomic Claim → Semantic Frame 是否忠實
- Canonical Entity mapping 是否正確
- Epistemic mode 是否保留原文語氣
- 最後選擇
review_action
Review state
Markdown 內文不是正式 approval。只有 Apply bridge 寫入的 Decision Ledger event 才是正式決策。