# Satya Nadella 称 Microsoft 威斯康星 Fairwater 数据中心年耗水不高于一家本地餐厅

- 来源：Rohan Paul (@rohanpaul_ai)
- 发布时间：2026-09-02 03:55
- AIHOT 分数：58
- AIHOT 链接：https://aihot.virxact.com/items/cmtj40kwc056uroh9wf8vnp2e
- 原文链接：https://x.com/rohanpaul_ai/status/2094876865077096502

## AI 摘要

Satya Nadella 表示 Microsoft 最新威斯康星 AI 数据中心 Fairwater 每年用水量约等于一家本地餐厅，冷却回路一次性注水后可近乎零耗水运行。

## 正文

Satya Nadella: Microsoft’s latest Wisconsin AI data center keeps yearly water consumption no higher than that of 1 local restaurant.

"The cooling loop is filled once and the data centre can operate effectively with zero water consumption. Daily water usage across a year is roughly equivalent to what a single restaurant would use"

The mechanism is mainly about replacing evaporative cooling with closed-loop direct-to-chip liquid cooling, so water moves like coolant inside a sealed machine rather than being boiled off into the air.

Hot GB200-class AI racks produce too much heat for normal air cooling, so cold liquid is pushed through pipes into the servers and across metal cold plates touching the hottest chips.

The liquid enters the rack cool, absorbs heat from the chips through cold plates, then exits the rack at a higher temperature and carries that heat through pipes to a huge cooling system outside the compute floor.

Microsoft says Fairwater sends that hot water to cooling “fins” beside the datacenter, where 172 20-foot fans blow air across the fins and dump the heat into the outside air.

The important detail is that the air cools the water through metal surfaces, so the water does not need to evaporate the way many older datacenters use cooling towers.

The cooled liquid then returns to the servers, repeats the loop, and keeps absorbing heat from the chips.

In older data centers, heat is often removed partly through cooling towers. Hot water meets moving air, some water evaporates, and that phase change carries heat away. Effective, but it consumes fresh water continuously.

But Firwater is a closed loop because the same coolant keeps circulating through sealed pipes: it absorbs heat from the chips, releases that heat through radiator-like fins, then flows back to the chips again.

For Wisconsin Fairwater, Microsoft says more than 90% of the facility uses closed-loop liquid cooling, while the remaining portion uses outside air and switches to water only on the hottest days.

----

From "Microsoft" YouTube channel, (link in comment)

### 引用推文

> Rohan Paul：WSJ just published a piece, on how Data centers can be a huge win for local communities. In Loudoun County, removing them could mean about $5,800 more in annual...