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Can CDUs deliver their rated capacity at the warm-water duty point AI racks now use?CDU 在 AI 机柜采用的温水工况下，还能达到额定容量吗？

Over 3 years, the biggest CDU change is water temperature, not size.未来三年，CDU 最大的变化不是单机变大，而是水温变高。

Data as of 2026-10-12, reviewed monthly.数据截至 2026-10-12，每月复核。Condition: the whole chain is designed for warm water前提：整条链按温水设计

Interactive figure of a generic unit with its parts named. Requires JavaScript.通用机组互动图，标有各部件名称。需启用 JavaScript。

Facility water设施水Rack loop机柜回路A generic unit, not to scale.通用机组，不按比例。

Inside an in-row CDU列间 CDU 的内部

How it works, and the sources工作原理和来源

A CDU keeps the coolant that runs through the racks' cold plates in its own closed loop. Its pumps circulate that coolant, and a plate heat exchanger passes the heat to the building's facility water, whose flow a control valve adjusts to hold the coolant supply temperature. The ringed pipes are the insulated facility-water pipes. Components follow Vertiv's public CoolChip CDU datasheet and guide specification; the internal layout and the expansion tank are illustrative.CDU 让流经机柜冷板的冷却液在自己的闭式回路中循环。它的水泵推动冷却液循环，板式换热器把热量传给建筑的设施水；调节阀调节设施水流量，以保持冷却液的供液温度。带环纹的是保温的设施水管。零件依据 Vertiv 公开的 CoolChip CDU 数据表和设计规范，内部布置和膨胀罐为示意。 Datasheet数据表 · Guide specification设计规范

As the approach narrows, the same CDU delivers less: Delta Electronics GoCool-1500接近温差收窄，同一台 CDU 出力下降：Delta Electronics GoCool-1500
1,016kW

At a 4 K approach, the table gives 1,016 kW, 32% less.接近温差 4 K 时，表中为 1,016 kW，低 32%。

Coolant leaving for the racks送往机柜的冷却液
Facility water entering设施水进水
4 K
−32%1,500 kW at 6 K（6 K）

The maker's own rating table, by approach, at 17 °C facility water and 1,300 L/min on the facility side. It says nothing about capacity at warmer water. Other makers rate at different conditions, so this is an example, not an industry average.这是厂商自己的额定表，按接近温差列出，设施侧为 17 °C、1,300 L/min。表中没有给出更高水温下的容量。其他厂商的额定工况不同，因此这只是示例，不是行业平均。

As the approach narrows, the same CDU delivers less: Delta Electronics GoCool-1500接近温差收窄，同一台 CDU 出力下降：Delta Electronics GoCool-1500

Table表格

Approach接近温差Rated kW额定 kW
6 K1,500
5 K1,250
4 K1,016

Sources来源

  1. Delta Electronics GoCool-1500 specificationsDelta Electronics GoCool-1500 规格

Method and notes方法和说明

The table lists the rack-side flow of each rating: 1,500 L/min at 6 K and 5 K, 1,524 L/min at 4 K. It also lists 1,375 kW at 6 K with 1,650 L/min, not drawn here.额定表写明各额定点的机柜侧流量：6 K 和 5 K 为 1,500 L/min，4 K 为 1,524 L/min。表中另有 6 K、1,650 L/min 时 1,375 kW，这里没有画出。

41°C

Facility water to the CDU in NVIDIA's MGX exampleNVIDIA MGX 示例中进入 CDU 的设施水

Vendor example厂商示例Rack coolant 45 °C机柜冷却液 45 °CNVIDIANVIDIA
~4K

About this much approach is left to the CDU at that duty point该工况下留给 CDU 的接近温差约为此值

Derived: 45 − 41推算：45 − 41NVIDIANVIDIA
−32%

Delta Electronics GoCool-1500: 1,500 kW at 6 K, 1,016 kW at 4 KDelta Electronics GoCool-1500：6 K 时 1,500 kW，4 K 时 1,016 kW

Vendor rating table at 17 °C facility water厂商额定表，设施水 17 °CDatasheet规格页

Judgement判断

Over the next three years the biggest change for CDUs is not size but water temperature: NVIDIA designs its racks for 45 °C coolant and shows 41 °C facility water to the CDU, which leaves about 4 K across the CDU.

For the whole plant it is an opportunity: NVIDIA says 45 °C operation lets data centers in many climates reject heat with dry coolers and ambient air, "reducing the need for compressors".

未来三年，CDU 最大的变化不是单机变大，而是水温变高：NVIDIA 机柜按 45 °C 冷却液设计，示意图中给 CDU 的设施水是 41 °C，CDU 只剩约 4 K 的温差。

对整个冷站这是机会：NVIDIA 表示 45 °C 运行让很多气候区可以用干冷器和室外空气散热，"减少对压缩机的需求"。

Judgement by LC. Sources: LC 的判断。来源：[1] [2] [3]

Warmer water: does the approach fit?水温升高：接近温差够不够？

4 K: the margin at 41 °C facility water and 45 °C coolant4 K：41 °C 设施水、45 °C 冷却液下的余量 0 K2 K4 K6 K8 K10 K Carrier 65LL CDUas low as 2 K低至 2 KDaikin Distribution Unitdown to 2 K低至 2 KJohnson Controls / Silent-Aire CDU3.5 K at 1,400 kW3.5 K（1,400 kW）Vertiv CoolChip CDU 23004 K at 2,300 kW4 K（2,300 kW）Modine / Airedale Skid CDU4 K at 2,100 kW4 K（2,100 kW）Modine / Airedale In-row CDU4 K at 1,000 kW4 K（1,000 kW）CoolIT Systems CHx20005 K at 2,000 kW5 K（2,000 kW）Delta Electronics GoCool-1500 CDU6 K at 1,500 kW; 4 K at 1,016 kW6 K（1,500 kW）；4 K（1,016 kW）nVent / Hoffman RackChiller CDU8006 K at 800 kW6 K（800 kW）nVent / Hoffman RackChiller CDU4010 K at 40 kW10 K（40 kW）

NVIDIA's reference example supplies 41 °C facility water to the CDU and 45 °C coolant to the racks, leaving about 4 K. This is a temperature-margin screen, an engineering reading, not a vendor statement or a performance test. Vendors define approach and rating conditions differently (fluid, flow, "as low as" values). A unit outside the margin is not proven unsuitable: it would need colder facility water or a rating at the warmer condition. Hollow: the vendor's minimum, not tied to the rated capacity. Each dot is the approach at the unit's stated rated capacity: Delta sits at its 1,500 kW rating, and also lists 4 K at 1,016 kW, shown above, both at 17 °C facility water. Liquid-to-air units are excluded.NVIDIA 的参考示例中，进入 CDU 的设施水为 41 °C，进入机柜的冷却液为 45 °C，只留出约 4 K。这是温差余量筛查，属于工程解读，不是厂商声明，也不是性能测试。各厂商对接近温差和额定工况的定义不同（介质、流量、“低至”数值）。超出余量并不说明机组不适用，只说明它需要更低的设施水温，或需要在更高水温下重新标定。空心：厂商最小值，未对应额定容量。每个点是机组标称额定容量下的接近温差：台达的点对应其 1,500 kW 额定，它另列 4 K 时 1,016 kW（见上文），均为设施水 17 °C。液-气型机组不列入。

Warmer water: does the approach fit?水温升高：接近温差够不够？

Table表格

Unit (vendor source)机组（厂商来源）Stated approach K标称接近温差 KTemperature-margin screen at NVIDIA’s example按 NVIDIA 示例的温差余量筛查
Carrier 65LL CDU — QuantumLeap portfolioas low as 2低至 2
vendor minimum; the source does not tie the rated capacity to it厂商最小值；来源没有说明额定容量对应这一数值		minimum approach only: 41 + 2 ≤ 45 °C, but no capacity is stated at this approach只有最小接近温差：41 + 2 ≤ 45 °C，但来源没有给出这一接近温差下的容量
Daikin Daikin Distribution Unit — CDU/DDUdown to 2低至 2
vendor minimum; the source does not tie the rated capacity to it厂商最小值；来源没有说明额定容量对应这一数值		minimum approach only: 41 + 2 ≤ 45 °C, but no capacity is stated at this approach只有最小接近温差：41 + 2 ≤ 45 °C，但来源没有给出这一接近温差下的容量
Johnson Controls / Silent-Aire Silent-Aire CDU — 1 MW North America configuration3.5within the margin at the approach of its 1,400 kW rating: 41 + 3.5 ≤ 45 °C按 1,400 kW 额定对应的接近温差在余量内：41 + 3.5 ≤ 45 °C
Vertiv CoolChip CDU 23004within the margin at the approach of its 2,300 kW rating: 41 + 4 ≤ 45 °C按 2,300 kW 额定对应的接近温差在余量内：41 + 4 ≤ 45 °C
Modine / Airedale In-row CDU — CDU10/CDU12 (global, ASHRAE W2, water)4within the margin at the approach of its 1,000 kW rating: 41 + 4 ≤ 45 °C按 1,000 kW 额定对应的接近温差在余量内：41 + 4 ≤ 45 °C
Modine / Airedale Skid CDU — CDU15 (global, ASHRAE W2, water)4within the margin at the approach of its 2,100 kW rating: 41 + 4 ≤ 45 °C按 2,100 kW 额定对应的接近温差在余量内：41 + 4 ≤ 45 °C
CoolIT Systems CHx20005outside the margin at its stated approach: 41 + 5 > 45 °C按标称接近温差超出余量：41 + 5 > 45 °C
nVent / Hoffman RackChiller CDU8006outside the margin at its stated approach: 41 + 6 > 45 °C按标称接近温差超出余量：41 + 6 > 45 °C
Delta Electronics GoCool-1500 liquid-to-liquid CDU6outside the margin at its stated approach: 41 + 6 > 45 °C按标称接近温差超出余量：41 + 6 > 45 °C
nVent / Hoffman RackChiller CDU4010outside the margin at its stated approach: 41 + 10 > 45 °C按标称接近温差超出余量：41 + 10 > 45 °C

One vendor shows the trade-off directly: Delta Electronics GoCool-1500 is rated 1,500 kW at 6 K, 1,250 kW at 5 K, 1,016 kW at 4 K.有一家厂商直接给出了这种取舍：Delta Electronics GoCool-1500 的额定能力为 6 K 时 1,500 kW，5 K 时 1,250 kW，4 K 时 1,016 kW。 Source来源

Sources来源

  1. NVIDIA: 45 °C rack design point, 41 °C facility water exampleNVIDIA：45 °C 机柜设计点，41 °C 设施水示例
  2. Vertiv CoolChip CDU 2300Vertiv CoolChip CDU 2300
  3. Johnson Controls / Silent-Aire CDU — 1 MW North America configurationJohnson Controls / Silent-Aire CDU — 1 MW North America configuration
  4. Carrier 65LL CDU — QuantumLeap portfolioCarrier 65LL CDU — QuantumLeap portfolio
  5. Modine / Airedale In-row CDU — CDU10/CDU12 (global, ASHRAE W2, water)Modine / Airedale In-row CDU — CDU10/CDU12 (global, ASHRAE W2, water)
  6. nVent / Hoffman RackChiller CDU800nVent / Hoffman RackChiller CDU800
  7. nVent / Hoffman RackChiller CDU40nVent / Hoffman RackChiller CDU40
  8. Daikin Distribution Unit — CDU/DDUDaikin Distribution Unit — CDU/DDU
  9. CoolIT Systems CHx2000CoolIT Systems CHx2000
  10. Delta Electronics GoCool-1500 liquid-to-liquid CDUDelta Electronics GoCool-1500 liquid-to-liquid CDU
  11. Modine / Airedale Skid CDU — CDU15 (global, ASHRAE W2, water)Modine / Airedale Skid CDU — CDU15 (global, ASHRAE W2, water)

What makers have said is coming厂商已宣布的下一步

2026 H22026 年下半年

Vera Rubin NVL72: 330 kW facility design TDP, 45 °C design point; ships in 2026 H2Vera Rubin NVL72：设施设计 TDP 330 kW，45 °C 设计点；2026 年下半年出货

Planned计划, announced 2026-03，2026-03 公布 source来源

Oct 20262026 年 10 月

Schneider WCDU first shipments in selected regions; up to 20 units in group mode施耐德 WCDU 在部分地区首批发货；最多 20 台群控

Planned计划, announced 2026-09，2026-09 公布 source来源

early 20272027 年初

WCDU US pre-orders (early 2027)WCDU 美国预订（2027 年初）

Planned计划, announced 2026-09，2026-09 公布 source来源

20272027 年

NVIDIA 800 VDC architecture for 1 MW racks and beyond (2027)NVIDIA 800 VDC 架构，面向 1 MW 及以上机柜（2027 年）

Planned计划, announced 2025-05，2025-05 公布 source来源

Q2 20272027 年第二季度

LiquidStack CDU 2.X shipments (Q2 2027)LiquidStack CDU 2.X 出货（2027 年第二季度）

Planned计划, announced 2026-09，2026-09 公布 source来源

Each stays a plan until a source confirms it happened. Passing the window does not prove shipment.在有来源确认发生之前，各项都只是计划。时间窗口过去并不代表已经出货。

Go deeper继续深入

Compare two or three自选两到三款比较

○ = not stated by the vendor. Values keep the vendor's own conditions; they are not a ranking. Choose "—" in the third box to compare two.○ = 厂商未标称。数值保留厂商自己的工况，不构成排名。第三个框选"—"即可只比较两款。

Single units: 2–2.3 MW arrived in late 2024; named units passed it in 2026单台机组：2–2.3 MW 在 2024 年底出现，2026 年有具体型号超过这一档chart图

Largest vendor-stated single-unit capacity at launch, kW. Each point has its own duty point, so this is not a ranking. A bar is a product family whose unit sizes the vendor did not itemise. Faded = preliminary (source no longer retrievable).各机型发布时厂商标称的单台最大容量，kW。每个点的工况不同，因此不是排名。竖条表示厂商未逐一列出单机规格的产品系列。浅色 = 初步（来源已无法获取）。

Single-unit capacity over time单台机组容量随时间变化
01,0002,0003,0004,0005,0002024202520262027202820292,300 kW: in-row limit (this site's rule)2,300 kW：列间上限（本站规则）today今天Vertiv CoolChip CDU 2300Airedale 1 MW CDUMotivair MCDU-70Delta GoCool 3 MWSchneider WCDUCarrier CDU family 1.3–5 MW

Data table数据表

Date日期Product产品kWStatus状态
Aug 20242024 年 8 月LiquidStack CDU-1MW1,350verified已核实
Sep 20242024 年 9 月Airedale 1 MW CDU1,000verified已核实
Nov 20242024 年 11 月Vertiv CoolChip CDU 23002,300verified已核实
Mar 20252025 年 3 月CoolIT CHx15001,500verified已核实
Mar 20252025 年 3 月Delta in-row 1.5 MW1,500verified已核实
Mar 20252025 年 3 月Airedale range to 2 MW2,000verified已核实
Apr 20252025 年 4 月CoolIT CHx20002,000verified已核实
Jul 20252025 年 7 月Boyd ROL23002,300preliminary初步
Oct 20252025 年 10 月Envicool Deschutes CDU (OCP)2,000value verified; month from OCP search index数值已核实；月份取自 OCP 检索索引
Nov 20252025 年 11 月STULZ Deschutes CDU (OCP)2,000value verified; month from OCP search index数值已核实；月份取自 OCP 检索索引
Nov 20252025 年 11 月Carrier CDU family (unit sizes 1.3–5 MW, not itemised)1,300–5,000verified已核实
Jan 20262026 年 1 月Motivair MCDU-702,500verified已核实
Jan 20262026 年 1 月Trane DCDA (Asia-Pacific)1,350verified已核实
Mar 20262026 年 3 月Delta GoCool 3 MW3,000verified已核实
Mar 20262026 年 3 月Delta 800 VDC CDU2,400verified已核实
Sep 20262026 年 9 月Schneider WCDU3,500verified已核实
Three representative units三个代表机组3

Chosen by the rule on each card; the first two compare ratings that are stated at different duty points, so they are not a ranking of what each unit can do at 41 °C water.按每张卡片上的规则选出；前两张比较的是不同工况下的标称值，不代表各机组在 41 °C 水温下的能力排名。

Vertiv CoolChip CDU 2300

Largest stated rating among in-row units: 2,300 kW, approach 4 K.列间型中标称额定值最大的机组：2,300 kW，接近温差 4 K。

≤ 2,300 kW; rack-like footprint (two racks wide). Vendor: "in-row or perimeter".≤ 2,300 kW；接近机柜的占地（两个机柜宽）。厂商：可列间或机房周边布置。

In-row列间型

Trane / LiquidStack GigaModular CDU

Largest stated rating among room-level systems: 14,000 kW.房间级中标称额定值最大的系统：14,000 kW。

> 2,300 kW; modular system. Vendor: "white space and gray space … centralized".> 2,300 kW；模块化系统。厂商：可放在机房或辅助区，集中布置。

Room-level房间级

Johnson Controls / Silent-Aire CDU — 1 MW North America configuration

Narrowest approach stated at the rated capacity: 1,400 kW, approach 3.5 K.额定容量下标称的最小接近温差：1,400 kW，接近温差 3.5 K。

≤ 2,300 kW; rack-like footprint. Vendor: "In Row Deployment 500–1,050 kW" (this 1,400 kW water design is above that range).≤ 2,300 kW；接近机柜的占地。厂商：列间部署 500–1,050 kW（此 1,400 kW 水系统配置高于该范围）。

In-row列间型
The latest six product, contract and rule events最近六项产品、合同与法规事件6
  • Motivair: 1.5 L/min per kW, "the industry target"Motivair：每 kW 1.5 L/min，"行业目标" Water temperature and flow水温与流量 source来源
  • Carrier 65LL: approach as low as 2 °C开利 65LL：接近温差低至 2 °C Water temperature and flow水温与流量 source来源
  • NVIDIA: 41 °C facility water to CDUs, 45 °C coolant to racksNVIDIA：41 °C 设施水进 CDU，45 °C 冷却液进机柜 Water temperature and flow水温与流量 source来源
  • Delta shows a 2,400 kW CDU with native 800 VDC (GTC 2026)台达展示原生 800 VDC 的 2,400 kW CDU（GTC 2026） 800 VDC power800 VDC 供电 source来源
  • GigaModular commercially available, up to 14 MWGigaModular 商用，最高 14 MW Modular systems模块化系统 source来源
  • LiquidStack CDU 2.X pre-orders: facility inlet up to 45 °C, 3,750 L/min at 3.5 barLiquidStack CDU 2.X 预订：设施侧进水最高 45 °C，3.5 bar 下 3,750 L/min Water temperature and flow水温与流量 source来源

A date marks an event that happened; the plans are shown above with their windows. The full six-year roadmap is in the next rows.有日期的是已发生的事件；计划及其时间窗口见上文。完整六年路线图在下面。

Company news: acquisitions, factories and funding公司动态：收购、工厂和融资7
  • Vertiv acquires CoolTera维谛收购 CoolTera Ownership and open specifications收购与开放规范 source来源
  • preliminary初步 Schneider Electric completes 75% of Motivair施耐德完成收购 Motivair 75% 股权 Ownership and open specifications收购与开放规范 source来源
  • Daikin Applied acquires Chilldyne大金应用收购 Chilldyne Ownership and open specifications收购与开放规范 source来源
  • Trane completes the LiquidStack acquisition特灵完成收购 LiquidStack Ownership and open specifications收购与开放规范 source来源
  • Eaton completes the Boyd Thermal acquisition伊顿完成收购 Boyd 热管理业务 Ownership and open specifications收购与开放规范 source来源
  • Ecolab completes CoolIT艺康完成收购 CoolIT Ownership and open specifications收购与开放规范 source来源
  • Planned计划 preliminary初步 Schneider expects to buy the remaining 25% of Motivair (2028)施耐德预计 2028 年收购 Motivair 剩余 25% announced 2025-022025-02 公布 Ownership and open specifications收购与开放规范 source来源
Full roadmap, makers and owners, and the method完整路线图、厂商与所有者、方法29 events29 个事件

Roadmap, 2023 Q4 – 2029 Q3路线图，2023 年第四季度至 2029 年第三季度

Dated events from official sources. Planned events show the window the source states; passing the window does not prove shipment. No future model is inferred. 2029 has no sourced event.来自官方来源的有日期事件。计划事件显示来源给出的时间窗口；窗口过去并不代表已经出货。不推测未来型号。2029 年没有有来源的事件。

Rack load (NVIDIA)机柜负荷（NVIDIA）

Today's Blackwell racks: GB200 NVL72 120 kW and GB300 NVL72 135 kW (NVIDIA management budgets; the page gives no release date).当前 Blackwell 机柜：GB200 NVL72 120 kW，GB300 NVL72 135 kW（NVIDIA 管理预算；该页面未给出发布日期）。

  1. Target 2026 H2目标 2026 年下半年 Vera Rubin NVL72: 330 kW facility design TDP, 45 °C design point; ships in 2026 H2Vera Rubin NVL72：设施设计 TDP 330 kW，45 °C 设计点；2026 年下半年出货 [2] announced Mar 20262026 年 3 月公布 planned计划
  2. Target 2027 H2目标 2027 年下半年 Rubin Ultra NVL576 (2027 H2). The March 2025 target of 600 kW per Kyber rack is supersededRubin Ultra NVL576（2027 年下半年）。2025 年 3 月的 Kyber 单柜 600 kW 目标已被取代 announced Mar 20252025 年 3 月公布 planned计划 superseded已被取代
  3. Target 2028目标 2028 年 Feynman (2028); no rack power or water temperature publishedFeynman（2028 年）；未公布机柜功率和水温 [2] announced Mar 20252025 年 3 月公布 planned计划

Modular systems模块化系统

  1. Jun 20252025 年 6 月 LiquidStack GigaModular unveiled: 2.5–10 MWLiquidStack GigaModular 发布：2.5–10 MW
  2. Sep 20252025 年 9 月 JCI Silent-Aire CDU platform: 500 kW to more than 10 MW江森自控 Silent-Aire CDU 平台：500 kW 到 10 MW 以上
  3. Oct 20252025 年 10 月 Airedale skid CDU: 400 kW to 2 MW and beyond at 4 KAiredale 撬装 CDU：4 K 下 400 kW 到 2 MW 以上
  4. Jan 20262026 年 1 月 Six MCDU-70 give 10 MW with 4 + 2 redundancy6 台 MCDU-70 组成 10 MW，4 + 2 冗余
  5. May 20262026 年 5 月 GigaModular commercially available, up to 14 MWGigaModular 商用，最高 14 MW
  6. Target Oct 2026目标 2026 年 10 月 Schneider WCDU first shipments in selected regions; up to 20 units in group mode施耐德 WCDU 在部分地区首批发货；最多 20 台群控 announced Sep 20262026 年 9 月公布 planned计划
  7. Target early 2027目标 2027 年初 WCDU US pre-orders (early 2027)WCDU 美国预订（2027 年初） announced Sep 20262026 年 9 月公布 planned计划

Water temperature and flow水温与流量

  1. May 20242024 年 5 月 STULZ CyberCool CMU supports ASHRAE W32 to W+STULZ CyberCool CMU 支持 ASHRAE W32 到 W+
  2. Mar 20252025 年 3 月 CoolIT CHx1500: up to 1.2 L/min per kW at 5 °C approachCoolIT CHx1500：5 °C 接近温差下每 kW 最高 1.2 L/min
  3. Oct 20252025 年 10 月 Envicool lists a Deschutes CDU on OCP: 2 MW at 3 °C approach英维克在 OCP 上架 Deschutes CDU：3 °C 接近温差下 2 MW month from OCP search index月份取自 OCP 检索索引
  4. Nov 20252025 年 11 月 STULZ lists a Deschutes CDU on OCP: 2 MW at 3 °C approachSTULZ 在 OCP 上架 Deschutes CDU：3 °C 接近温差下 2 MW month from OCP search index月份取自 OCP 检索索引
  5. Jan 20262026 年 1 月 Motivair: 1.5 L/min per kW, "the industry target"Motivair：每 kW 1.5 L/min，"行业目标"
  6. Jan 20262026 年 1 月 Carrier 65LL: approach as low as 2 °C开利 65LL：接近温差低至 2 °C
  7. Mar 20262026 年 3 月 NVIDIA: 41 °C facility water to CDUs, 45 °C coolant to racksNVIDIA：41 °C 设施水进 CDU，45 °C 冷却液进机柜
  8. Sep 20262026 年 9 月 LiquidStack CDU 2.X pre-orders: facility inlet up to 45 °C, 3,750 L/min at 3.5 barLiquidStack CDU 2.X 预订：设施侧进水最高 45 °C，3.5 bar 下 3,750 L/min
  9. Target Q2 2027目标 2027 年第二季度 LiquidStack CDU 2.X shipments (Q2 2027)LiquidStack CDU 2.X 出货（2027 年第二季度） announced Sep 20262026 年 9 月公布 planned计划

800 VDC power800 VDC 供电

  1. Mar 20262026 年 3 月 Delta shows a 2,400 kW CDU with native 800 VDC (GTC 2026)台达展示原生 800 VDC 的 2,400 kW CDU（GTC 2026）
  2. Target 2027目标 2027 年 NVIDIA 800 VDC architecture for 1 MW racks and beyond (2027)NVIDIA 800 VDC 架构，面向 1 MW 及以上机柜（2027 年） announced May 20252025 年 5 月公布 planned计划

Ownership and open specifications收购与开放规范

  1. Dec 20232023 年 12 月 Vertiv acquires CoolTera维谛收购 CoolTera
  2. Feb 20252025 年 2 月 Schneider Electric completes 75% of Motivair施耐德完成收购 Motivair 75% 股权 preliminary初步
  3. Oct 20252025 年 10 月 Google presents the Project Deschutes CDU specification at OCP谷歌在 OCP 发布 Project Deschutes CDU 规范
  4. Nov 20252025 年 11 月 Daikin Applied acquires Chilldyne大金应用收购 Chilldyne
  5. Mar 20262026 年 3 月 Trane completes the LiquidStack acquisition特灵完成收购 LiquidStack
  6. Mar 20262026 年 3 月 Eaton completes the Boyd Thermal acquisition伊顿完成收购 Boyd 热管理业务
  7. Jul 20262026 年 7 月 Ecolab completes CoolIT艺康完成收购 CoolIT
  8. Target 2028目标 2028 年 Schneider expects to buy the remaining 25% of Motivair (2028)施耐德预计 2028 年收购 Motivair 剩余 25% announced Feb 20252025 年 2 月公布 planned计划 preliminary初步

No dated official source found for: Vertiv CoolChip CDU 600 / 1350 / 70; nVent RackChiller CDU40; Envicool XCRow series; Shenling CDU range; Daikin DDU ("set to be launched soon", 2026-06-24).以下产品没有找到有日期的官方来源：Vertiv CoolChip CDU 600 / 1350 / 70；nVent RackChiller CDU40；Envicool XCRow series；Shenling CDU range；Daikin DDU ("set to be launched soon", 2026-06-24)。

Makers and owners厂商与所有者

Listed companies behind the products on this page: 本页产品背后的上市公司：CarrierCarrier, DaikinDaikin, Delta Electronics台达电子, Envicool英维克, Johnson ControlsJohnson Controls, ModineModine, nVentnVent, Schneider ElectricSchneider Electric, Shenling申菱环境, Trane TechnologiesTrane Technologies, VertivVertiv. Other makers: 其他厂商：STULZ (private非上市); CoolIT Systems (owned by Ecolab since 2026-072026 年 7 月起归属艺康); Boyd Thermal (owned by Eaton since 2026-032026 年 3 月起归属伊顿). See the value-chain map查看产业链地图

Method方法

Specifications come from each vendor’s datasheet, brochure or product page, extracted twice by independent models and ruled against the source. Events come from vendor, NVIDIA and OCP pages; each was checked by script on the page and by an independent model. Evidence cut-off 2026-10-12. Personal research, not investment advice.规格来自各厂商的数据表、样本或产品页，由两个独立模型分别提取并对照原文裁定。事件来自厂商、NVIDIA 和 OCP 的页面，每条都经脚本在原页面核对并由独立模型复核。证据截止 2026-10-12。个人研究，不构成投资建议。

Database view: the full matrix, in-row and room-level数据库视图：完整矩阵，列间型与房间级18 rows18 行
Showing显示 18

A CDU rated 2,300 kW or less is normally in-row: it can stand in line with the racks. Second check: a footprint close to a standard rack (about 600 mm wide, or a multiple, and about 1,200 mm deep). Above 2,300 kW the unit is room-level (machine room, gallery or skid). Vendors state 85 of 162 displayed cells (a family range counts as a stated capacity; “unclear” does not count). A value appears only in the column its duty point matches; capacities at different duty points are not ranked. Rows are sorted by rated capacity for reading only. ○ = not stated by the vendor (explained once here, not repeated in words in each cell).额定 2,300 kW 及以下的 CDU 通常是列间型，可以和机柜排成一列。第二个判断：占地接近标准机柜（宽约 600 mm 或其倍数，深约 1,200 mm）。超过 2,300 kW 的属于房间级（机房、设备廊道或撬装）。表中 162 个单元格里，厂商披露了 85 个（系列容量范围算作已披露，“不明确”不计）。数值只放在工况相符的列；不同工况下的容量不做排名。行按额定容量排序，仅为方便阅读。○ = 厂商未标称（只在此说明一次，不在每格重复文字）。

In-row (14 units)列间型（14 款）

Company and line公司与产品Rated kW额定 kWFacility supply °C设施侧供水 °CTCS supply °C二次侧供液 °CApproach K接近温差 KTCS flow L/min二次侧流量 L/minExternal pressure kPa外部可用压头 kPaInput kW输入功率 kWRedundancy (vendor wording)冗余（厂商原文）Footprint W × D mm占地 宽 × 深 mmPlacement basis布置依据
Vertiv
CoolChip CDU 2300		2,300not stated未披露not stated未披露4not stated未披露not stated未披露47.8Redundant pumps, sensors, component / unit failover protocols1,200 × 1,200≤ 2,300 kW; rack-like footprint (two racks wide). Vendor: "in-row or perimeter".≤ 2,300 kW；接近机柜的占地（两个机柜宽）。厂商：可列间或机房周边布置。
Daikin
Daikin Distribution Unit — CDU/DDU		2,000not stated未披露not stated未披露down to 2低至 2not stated未披露not stated未披露not stated未披露pump redundancynot stated未披露≤ 2,300 kW; footprint not stated. Vendor: "in-row, end-of-aisle or technical corridor".≤ 2,300 kW；未写占地。厂商：可列间、通道端或技术走廊布置。
Approach "down to" 2 K; the source does not tie it to the 2,000 kW size.接近温差"低至" 2 K；来源没有说明它对应 2,000 kW 规格。
Envicool
Coolinside in-row CDU, XCRow series (largest: XCRow2000)		2,0003540not stated未披露3,000not stated未披露not stated未披露not stated未披露1,200 × 2,000≤ 2,300 kW. Vendor: "In-row CDU". Footprint 1,200 × 2,000 mm: two racks wide but deeper than a standard rack.≤ 2,300 kW。厂商：列间 CDU。占地 1,200 × 2,000 mm：两个机柜宽，但比标准机柜深。
Largest model of the XCRow in-row series.XCRow 列间系列中最大的型号。
CoolIT Systems
CHx2000		2,000not stated未披露not stated未披露5not stated未披露not stated未披露12.24not stated未披露not stated未披露≤ 2,300 kW; footprint not stated on this page. Vendor: "Row-Based CDU".≤ 2,300 kW；此页未写占地。厂商：列级 CDU。
"2125 LPM at 35 psi for thermal headroom" is a hydraulic capability, not the 2,000 kW duty point, so neither value is shown."2125 LPM at 35 psi"（热余量）是水力能力，不是 2,000 kW 的额定工况，因此两个数都不列出。
Shenling
Liquid-cooling CDU		family 200–1,800系列 200–1,800not stated未披露not stated未披露not stated未披露not stated未披露not stated未披露not stated未披露not stated未披露not stated未披露Family 200–1,800 kW ≤ 2,300 kW; placement and footprint not stated.系列 200–1,800 kW，≤ 2,300 kW；未写布置方式和占地。
Delta Electronics
GoCool-1500 liquid-to-liquid CDU		1,50017not stated未披露61,500not stated未披露not stated未披露3+1(N+1) or 4 (N mode)1,200 × 1,200≤ 2,300 kW; rack-like footprint (two racks wide). Placement not stated.≤ 2,300 kW；接近机柜的占地（两个机柜宽）。厂商未写布置方式。
Vendor table: 1,500 kW at 6 K, 1,250 kW at 5 K, 1,016 kW at 4 K. The 331 kPa external pressure drop belongs to the nominal hydraulic spec (1,524 L/min at 4 K), so it is not shown at this rating.厂商表格：6 K 时 1,500 kW，5 K 时 1,250 kW，4 K 时 1,016 kW。331 kPa 外部压降属于额定水力参数（4 K 下 1,524 L/min），因此不放在此额定点。
Johnson Controls / Silent-Aire
Silent-Aire CDU — 1 MW North America configuration		1,400not stated未披露not stated未披露3.51,590not stated未披露not stated未披露not stated未披露889 × 1,219 (35 × 48 in)≤ 2,300 kW; rack-like footprint. Vendor: "In Row Deployment 500–1,050 kW" (this 1,400 kW water design is above that range).≤ 2,300 kW；接近机柜的占地。厂商：列间部署 500–1,050 kW（此 1,400 kW 水系统配置高于该范围）。
Secondary "32 psi supply" is a supply pressure, not available external head, so it is not shown.二次侧 "32 psi supply" 是供液压力，不是外部可用压头，因此不列出。
STULZ
CyberCool CMU / CyberCool CDU		1,3803236not stated未披露not stated未披露not stated未披露not stated未披露not stated未披露600/900 × 1,200≤ 2,300 kW; rack-like footprint (one or 1.5 racks wide).≤ 2,300 kW；接近机柜的占地（1 或 1.5 个机柜宽）。
Modine / Airedale
In-row CDU — CDU10/CDU12 (global, ASHRAE W2, water)		1,000273141,488350not stated未披露N+1 pumps, drives and filters978 × 1,200 (CDU10) / 1,200 × 1,200 (CDU12)≤ 2,300 kW; rack-like footprint (one or two racks wide). Vendor: "In-row CDU".≤ 2,300 kW；接近机柜的占地（1 到 2 个机柜宽）。厂商：列间 CDU。
Vendor table, global ASHRAE W2 water column. The 2,100–2,160 kW figures belong to the CDU15 skid (separate row).厂商表格中全球 ASHRAE W2 水系统一列。2,100–2,160 kW 属于 CDU15 撬装机组（另列一行）。
nVent / Hoffman
RackChiller CDU800		800not stated未披露not stated未披露6not stated未披露not stated未披露22.2Redundant high-performance, leak-free pump systemnot stated未披露≤ 2,300 kW; footprint not stated. Vendor: row-based RackChiller.≤ 2,300 kW；未写占地。厂商：列级 RackChiller。
Delta Electronics
4U 140 kW liquid-to-liquid in-rack CDU		140not stated未披露not stated未披露not stated未披露150138not stated未披露2+1 pumps445 × 805 (17.5 × 31.7 in, 4U)In-rack unit (4U).机柜内机组（4U）。
Vertiv
CoolChip CDU 70		108not stated未披露4525100not stated未披露1.7redundant pumps600 × 1,200≤ 2,300 kW; one rack footprint. Vendor: "row-based". Liquid-to-air unit.≤ 2,300 kW；一个机柜占地。厂商：列级。液-气型。
Liquid-to-air: the approach is to room air, not facility water.液-气型：接近温差相对机房空气，不是设施水。
Envicool
Coolinside in-rack liquid-to-liquid CDU — XCRow040/XCRow080		8035unclear不明确not stated未披露unclear不明确not stated未披露not stated未披露Dual pumps535 × 850In-rack unit (4U).机柜内机组（4U）。
Two-model table; secondary temperature and flow cannot be assigned reliably. Footprint is the XCRow080 column (535 × 850 × 165 mm).两型号表格，二次侧温度和流量无法可靠对应。占地取 XCRow080 一列（535 × 850 × 165 mm）。
nVent / Hoffman
RackChiller CDU40		40not stated未披露not stated未披露1060500.673 pumps for N+1 redundancynot stated未披露In-rack unit.机柜内机组。

Room-level (4 units)房间级（4 款）

Company and line公司与产品Rated kW额定 kWFacility supply °C设施侧供水 °CTCS supply °C二次侧供液 °CApproach K接近温差 KTCS flow L/min二次侧流量 L/minExternal pressure kPa外部可用压头 kPaInput kW输入功率 kWRedundancy (vendor wording)冗余（厂商原文）Footprint W × D mm占地 宽 × 深 mmPlacement basis布置依据
Trane / LiquidStack
GigaModular CDU		14,000not stated未披露not stated未披露not stated未披露15,000not stated未披露not stated未披露N+1 / N+2not stated未披露> 2,300 kW; modular system. Vendor: "white space and gray space … centralized".> 2,300 kW；模块化系统。厂商：可放在机房或辅助区，集中布置。
System capacity of a modular platform, not one machine.这是模块化平台的系统容量，不是单台机器。
Schneider Electric / Motivair
MCDU-70		5,04032.245not stated未披露3,751262not stated未披露redundant dual pumps1,600 × 1,222 (63 × 48.13 in)> 2,300 kW; 1.6 m wide floor unit.> 2,300 kW；1.6 米宽的落地机组。
Same unit, second rating: 2,500 kW at 41 °C facility water.同一台机组的第二个额定点：设施水 41 °C 时 2,500 kW。
Carrier
65LL CDU — QuantumLeap portfolio		2,600not stated未披露not stated未披露as low as 2低至 2not stated未披露not stated未披露not stated未披露Hot-swappable and redundant componentsnot stated未披露> 2,300 kW. Vendor: "monobloc and skid designs".> 2,300 kW。厂商：整体式和撬装设计。
Carrier's wider CDU family spans 1.3–5 MW (unit sizes not itemised).开利更大的 CDU 系列覆盖 1.3–5 MW（未逐一列出单机规格）。
Modine / Airedale
Skid CDU — CDU15 (global, ASHRAE W2, water)		2,100273143,126350not stated未披露not stated未披露4,200 × 2,200Skid unit: ≤ 2,300 kW, but the 4,200 × 2,200 mm footprint is not rack-like. Vendor: "suitable for both plant rooms and service corridors".撬装机组：≤ 2,300 kW，但 4,200 × 2,200 mm 的占地不接近机柜。厂商：适用于机房和设备走廊。
Same vendor table as the in-row CDU10/CDU12 (2,160 kW in the North American column).与列间 CDU10/CDU12 同一份厂商表格（北美列为 2,160 kW）。