PDF 原檔：報告_OCP2026_nVent_Helios背門熱交換_20261015_original.pdf
講者公開簡報（OCP 官方 Recorded Content 頁提供下載）。文字以 PyMuPDF 逐頁抽取，
### p<n>為頁碼；圖表內容見原檔。
圖片清單（已驗證 2026-10-19）
| 檔名 | 頁 | 分類 | 親眼所見內容 |
|---|---|---|---|
報告_OCP2026_nVent_Helios背門熱交換_20261015_p3.png |
p3 | 真資料圖 | RDHX 資料中心拓撲：冷卻塔→冷水機→外部 CDU→機櫃加 RDHX（技術冷卻系統 TCS），機房側 FWS/CWS 三迴路；註記「僅在可管理露點時供水到門」 |
報告_OCP2026_nVent_Helios背門熱交換_20261015_p4.png |
p4 | 真資料圖 | nVent 標準 RDHX 實物（機櫃後門含兩欄軸流風扇＋獨立兩柱框架）與規格：深度 252mm、最大 68kW（14C 水）、最大風量 5,885 CFM |
報告_OCP2026_nVent_Helios背門熱交換_20261015_p6.png |
p6 | 真資料圖 | AMD Helios RDHX 規格與 nVent 設計對照：雙開法式門、上或下接管、48VDC、可排 25-45kW；底部文字「Helios 機櫃功率 246kW，液氣 89/11% 分配」 |
報告_OCP2026_nVent_Helios背門熱交換_20261015_p7.png |
p7 | 真資料圖 | Helios 雙門 RDHX 實物照與標註：兩門軟管併一組控制閥/感測套件、控制器連動、風扇由壓差感測控制、AC 電源改專用 DC 並共用一個匯流排夾；右為軟管套件與接線圖 |
原始內容
p1
Sam Dore Product Manager – Liquid Cooling nVent Data Center Solutions nVent RDHX cooling for AMD Helios COOLING ENVIRONMENTS MARKET IMPACT & ADOPTION ] AI CLUSTERS
p2
• Air cooled rack densities are increasing beyond 20-40kW exceeding traditional air- cooling room limits of ~10-15kW per rack and 20-40kW per rack when using HAC solutions • New AI offerings are now exceeding 250kW per rack driving direct to chip HDLC solutions. • Direct to chip solutions are capturing ~60-90% of the heat direct to water, leaving significant amount of heat being dissipated to air • In the case of Helios, with a rack power of ~250kW per rack and an expected 89% heat capture to liquid, we expect to see ~27.5kW heat rejected to air • Cooling as close to the heat source as possible drives a more efficient solution – i.e. drive a room neutral solution by capturing the heat at the rack versus recirculating at room level Industry Progression and why RDHX
p3
Air to Liquid - RDHX – Data Center Topology Data Center ITE Space Data Center Mechanical Space Chiller External CDU Cooling Tower ITE Rack + RDHX ITE Rack + RDHX ITE ITE ITE External CDU Technology Cooling System (TCS) Facility Water System (FWS)* Condenser Water System (CWS) ITE ITE ITE * To doors only if dew point control can be managed
p4
• Smallest depth profile RDHX on the market – only 252mm • Stand alone option available with two post frame decoupled from rack • 42, 47, 48U, 52U heights and 600, 750, 800mm widths available • Greater than 90-degree door opening for easy access to servers for maintenance • Up to 5,885 CFM (10,000 m3/hr for 750 & 800 mm wide door) • Maximum capacity 68kW at 14deg C water • New valve & sensor kits cut labour time onsite • Pre-assembled and pressure tested to guarantee installation quality • Tri-clamp fittings for ease of installation and uniformity across regions Standard nVent RDHX Quick Facts
p5
TCO – Serviceability • Critical components hot-swappable • No shut-down for service & repair • No need to open door for swap of critical components • Minimizes need for skilled or external personnel • Power, fan, network redundancy • Cooling even if controller fails • Control mode fallback @ sensor failure • Reduces down-time RDHX PRO Simplifies
p6
Helios rack power = 246kW with 89/11% liquid air split Product Brief Highlights AMD Helios RDHX Architecture Specification French door design with 2 hinged doors Top or bottom plumbing connections 48VDC nominal power Capable of rejecting 25- 45 kW of heat nVent design Slimmest RDHX on the market Custom hose kits designed for Helios RDHX nVent designed 2:1 DC power Designed to meet and exceed heat rejection requirements Working in Partnership
p7
Specifics for the Helios Dual RDHX Controllers are ganged to ensure no confliction between internal sensors Hoses from the coil on each door, tee together and go to 1 control valve / sensor kit Fans are controlled by differential pressure sensors to ensure IT fans are never overworked Regular power supplies for 195 – 250 VAC are changed for dedicated DC power. The individual door supplies connect together for a single busbar clip
p8
Size • nVent utilise axial fans to reduce depth of the overall product as well as a slimmer water coil • With Helios being a double wide solution, the more depth that can be saved ensures maximum space is available in data halls Mechanical Connections • Using a 2:1 hose solution, nVent ensure only 1 connection to the facility manifold is required • Utilising 2” Danfoss FD83 connections ensures fast connection and ease of ongoing maintenance Redundancy by design • Providing N+1 fans on each door • Control algorithms that ensure constant operation Hose kit design • Ability to use the same hose kit for top or bottom feed deployments Connectivity • Modbus RTU/TCP, Redfish, SNMP, BACnet all available as standard • RDHX can be monitored at the unit via the HMI, via a connected laptop and remotely via web GUI Why the nVent Solution
p9
• Busbar Connections for DC powered RDHx • Standardization for Hose kit designs Single and Dual – connection type to FWS • Extension frame design for RDHx on OCP Racks Call to Action
p10
Thank You!