Liquid Cooling and AI Data Center Daily | 2026-09-11
A daily English mirror of liquid cooling, AI data center efficiency, research papers, products, policy, financing, and supply-chain signals.
1. Executive brief
This English edition mirrors the same public-source dataset used by the Chinese daily report for 2026-09-11.
- Collection window: 2026-09-10 08:00 北京时间 - 2026-09-11 08:00 北京时间.
- Coverage snapshot: 0 industry items; 0 technology items; 8 paper or white-paper items; 8 video signals.
- Current hot topics: 电力并网与能源约束, PUE/WUE 与能效优化, AI 芯片供给与交付.
- The heat score is 6/10 and should be read as a source-density signal, not as an investment indicator.
All claims should be verified against the original source links listed at the end of this report.
Academic and Industry Briefs
Papers, videos, industry updates, policy, financing, and projects are compressed into scannable tags with a title, summary, and source link.
Academic
Research papers, methods, research-oriented videos, and academic signals.
Towards Terabit/$λ$/s Multidimensional Silicon Photonic Engine
Increasing artificial intelligence (AI) workloads drive co-packaged optics (CPO), which integrates optical engines with electronic …
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Towards Terabit/$λ$/s Multidimensional Silicon Photonic Engine
- Published
- 2026-08-12
- Authors
- Hao Chen, Zengqi Chen, Wu Zhou, Kaihang Lu, Mingyuan Zhang, Yuxiang Yin, Yiou Cui, Chaoran Huang
- Theme
- 芯片与算力
Abstract
Increasing artificial intelligence (AI) workloads drive co-packaged optics (CPO), which integrates optical engines with electronic components. Optical interconnects can extend transmission distances and reduce latency, allowing distributed clusters in AI factories to operate as a unified computational unit. However, escalating data throughput necessitates greater parallelization of light within ultracompact form factors while maintaining stringent energy efficiency and latency constraints. Here, we present a multidimensional silicon photonic engine that achieves a communication capacity exceeding 1.8 terabit/s/lambda/s. By monolithically integrating transceivers, spatial and polarization (de)multiplexers, and optical signal processors on a single chip, we eliminate bulky discrete (de)multiplexers and power-hungry digital signal processing (DSP). In experiments, the photonic engine can be self-configured to identify two, four, or six concurrent spatial and polarization channels per fiber while mitigating dynamic channel crosstalk. Compared with the state-of-art DSP, our approach achieves >5,000-fold reductions in both power consumption and processing latency at a MIMO processing order of six. Furthermore, we demonstrate full-duplex, modulation-format-transparent inter-chip communication over 300-meter fiber. These results represent a paradigm shift for optical engines in future high-performance computing and AI-driven data centers.
Chinese interpretation
背景：AI 数据中心负载、功率密度和能源约束同步上升，芯片、服务器和高密度算力部署正在成为智算中心设计的关键变量。问题：论文聚焦现有方案在效率、可靠性或工程协同上的瓶颈。方法：摘要显示作者采用框架构建和频域/系统级分析，把运行负载、冷却/能源系统和基础设施约束放在同一分析框架中。结果：研究重点指向能效评价口径、运营指标和优化目标的系统化梳理。意义：对日报读者而言，它可用于判断芯片路线和服务器密度变化如何传导到机房设计。仍需结合全文实验条件、样本范围和成本假设核验。
Reference
Hao Chen, Zengqi Chen, Wu Zhou, 等. Towards Terabit/$λ$/s Multidimensional Silicon Photonic Engine[J/OL]. (2026-08-12)[2026-09-11]. http://arxiv.org/abs/2608.11639v1.
Real-Time Control of Sustainable Data Centers: A Two-Layer Model Predicti…
This paper proposes a two-layer model predictive control (MPC) framework for the real-time operation of data centers integrated wit…
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Real-Time Control of Sustainable Data Centers: A Two-Layer Model Predictive Control Framework with Workload Flexibility and Heat Recovery
- Published
- 2026-08-17
- Authors
- Wenyu Liu, Enea Figini, Mario Paolone
- Theme
- 余热回收
Abstract
This paper proposes a two-layer model predictive control (MPC) framework for the real-time operation of data centers integrated with on-site photovoltaic generation, battery energy storage, waste heat recovery, and district heating. The upper layer employs scenario-based stochastic optimization to jointly optimize intraday market participation, workload scheduling, and energy management under uncertainty. The lower layer adopts an adaptive tube-based MPC strategy that compensates short-term disturbances while tracking the dispatch references given by the upper layer. The framework further integrates multi-horizon forecasting to support real-time decision making. Microservice-based simulation studies under representative clear-sky and overcast operating conditions demonstrate that the proposed framework accurately tracks dispatch plans despite fast photovoltaic and workload fluctuations. Compared with single-layer control strategies, the adaptive lower-layer controller substantially reduces real-time dispatch deviations and the associated imbalance costs. In addition, the proposed framework naturally adapts to seasonal operating conditions and responds to carbon-aware operating signals, offering a practical approach for economically efficient, sustainable, and grid-supportive operation of future data centers.
Chinese interpretation
背景：AI 数据中心负载、功率密度和能源约束同步上升，余热回收、热泵耦合和二次能源利用正在成为智算中心设计的关键变量。问题：论文聚焦现有方案在效率、可靠性或工程协同上的瓶颈。方法：摘要显示作者采用建模优化、调度分析或算法评估，把运行负载、冷却/能源系统和基础设施约束放在同一分析框架中。结果：研究重点指向AI 负载波动对电网设备寿命和调频边界的影响。意义：对日报读者而言，它可用于判断数据中心余热能否从成本项转化为能源资产。仍需结合全文实验条件、样本范围和成本假设核验。
Reference
Wenyu Liu, Enea Figini, Mario Paolone. Real-Time Control of Sustainable Data Centers: A Two-Layer Model Predictive Control Framework with Workload Flexibility and Heat Recovery[J/OL]. (2026-08-17)[2026-09-11]. http://arxiv.org/abs/2608.16432v1.
Quantifying AI data center nitrogen oxide (NO$_x$) emissions from space
AI data center power demand is spurring rapid deployment of on- and near-site natural gas turbines. Nitrogen oxide (NO$_x$) polluti…
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Quantifying AI data center nitrogen oxide (NO$_x$) emissions from space
- Published
- 2026-08-23
- Authors
- Kevin D. Gauld, Daniel J. Varon, Nicholas Balasus, Daniel H. Cusworth
- Theme
- AI 运维优化
Abstract
AI data center power demand is spurring rapid deployment of on- and near-site natural gas turbines. Nitrogen oxide (NO$_x$) pollution from this equipment is a growing concern but has not previously been quantified with atmospheric observations. Here we demonstrate space-based detection and quantification of NO$_x$ emissions from the SpaceXAI Colossus 2 power plant in Southaven, Mississippi. Using observations from the geostationary TEMPO satellite instrument, we detect a strong increase in local mean NO$_2$ column concentrations after the plant began operations in late 2025. We then use TEMPO to estimate two-week-average NO$_x$ source rates from August 2025 to mid-August 2026, calibrating against continuous emission monitoring system (CEMS) data from US power plants. TEMPO first detected NO$_x$ emissions in December 2025 at 460$\pm$180 kg h$^{-1}$. We find that emissions increased through August 2026, averaging 730$\pm$185 kg h$^{-1}$ after February 2026, roughly 16 times higher than expected from the facility's March 2026 permit for 41 turbines operating under best available control technology (BACT) requirements ($\sim$47 kg h$^{-1}$). Emissions at the expected level would be undetectable by our TEMPO analysis.
Chinese interpretation
背景：AI 数据中心负载、功率密度和能源约束同步上升，AI 运维、负载预测和设施调优正在成为智算中心设计的关键变量。问题：论文聚焦现有方案在效率、可靠性或工程协同上的瓶颈。方法：摘要显示作者采用仿真建模和情景分析，把运行负载、冷却/能源系统和基础设施约束放在同一分析框架中。结果：研究重点指向AI 负载波动对电网设备寿命和调频边界的影响。意义：对日报读者而言，它可用于判断AI 工具是否能降低运维复杂度并提升可用性。仍需结合全文实验条件、样本范围和成本假设核验。
Reference
Kevin D. Gauld, Daniel J. Varon, Nicholas Balasus, 等. Quantifying AI data center nitrogen oxide (NO$_x$) emissions from space[J/OL]. (2026-08-23)[2026-09-11]. http://arxiv.org/abs/2608.22153v1.
Environmental and Economic Implications of Artificial Intelligence Data C…
In this study, we use electricity demand growth, cooling requirements, and backup system operation to evaluate the environmental an…
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Environmental and Economic Implications of Artificial Intelligence Data Centers in the United States
- Published
- 2026-08-11
- Authors
- Johanna Bolaños-Zuñiga, Alberto J. Lamadrid
- Theme
- 算电协同
Abstract
In this study, we use electricity demand growth, cooling requirements, and backup system operation to evaluate the environmental and economic implications of artificial intelligence data centers in the United States. Our results indicate that impacts are not determined solely by facility design, but by the broader electricity, water, and land-use systems in which these facilities operate. Emissions are primarily driven by electricity consumption and therefore depend on marginal generation mixes, transmission constraints, and the spatial and temporal distribution of demand. Analysis further shows that local effects include pressures on water resources, increased noise exposure, and land-use changes, with outcomes varying across regions and infrastructure conditions. The assessment of technological and operational measures shows that improvements in energy efficiency, cooling configurations, and operational strategies can reduce these impacts, although their effectiveness depends on system-level conditions. Evaluation of regulatory and market structures suggests that existing frameworks may not fully account for location- and time-specific externalities. These findings support the need for integrated policy approaches that align data center deployment and operation with electricity system characteristics, water availability, and land-use planning to improve overall environmental and economic performance.
Chinese interpretation
背景：AI 数据中心负载、功率密度和能源约束同步上升，算力负载与电网侧资源的协同调度正在成为智算中心设计的关键变量。问题：论文聚焦现有方案在效率、可靠性或工程协同上的瓶颈。方法：摘要显示作者采用框架构建和频域/系统级分析，把运行负载、冷却/能源系统和基础设施约束放在同一分析框架中。结果：研究重点指向能效评价口径、运营指标和优化目标的系统化梳理。意义：对日报读者而言，它可用于判断智算中心建设是否受电网容量、负载波动和调度机制约束。仍需结合全文实验条件、样本范围和成本假设核验。
Reference
Johanna Bolaños-Zuñiga, Alberto J. Lamadrid. Environmental and Economic Implications of Artificial Intelligence Data Centers in the United States[J/OL]. (2026-08-11)[2026-09-11]. http://arxiv.org/abs/2608.09882v1.
Generalizing Thermal Transport in High-Contrast Metamaterials through Int…
The rapid growth of generative AI has intensified the need for efficient heat dissipation in large-scale data centers. To control h…
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Generalizing Thermal Transport in High-Contrast Metamaterials through Interfacial Fresnel Reflection
- Published
- 2026-08-26
- Authors
- Seung Hyeon Ham, Yu Min Kim, In Hyeok Choi, Jeong Woo Han
- Theme
- 热管理与液冷
Abstract
The rapid growth of generative AI has intensified the need for efficient heat dissipation in large-scale data centers. To control heat flow, thermal metamaterials with layered structures have been widely used, which impart the anisotropic properties of thermal conductivities. However, the conventional effective medium approximation (EMA) often fails to provide accurate predictions in systems with a high thermal conductivity contrast between adjacent layers embedded in a background medium. Here, we generalize the EMA by introducing two corrective coefficients that extend its validity to regimes where the conventional EMA was previously inapplicable, i.e., high-contrast thermal metamaterials with the background medium. Notably, one of these coefficients that we proposed has the same mathematical form as the Fresnel reflection coefficient in optics. This allows us to interpret the "reflection-like" behavior of heat flow as it penetrates adjacent layers with high thermal contrast. Our findings suggest that heat diffusion, traditionally viewed as a purely dissipative process, can be understood intuitively through the framework of ray optics.
Chinese interpretation
背景：AI 数据中心负载、功率密度和能源约束同步上升，液冷、热管理和数据中心能效正在成为智算中心设计的关键变量。问题：论文聚焦现有方案在效率、可靠性或工程协同上的瓶颈。方法：摘要显示作者采用框架构建和频域/系统级分析，把运行负载、冷却/能源系统和基础设施约束放在同一分析框架中。结果：研究重点指向冷却效率、能源利用或运维策略的改进方向。意义：对日报读者而言，它可用于判断液冷方案、热管理路线和高密度部署节奏。仍需结合全文实验条件、样本范围和成本假设核验。
Reference
Seung Hyeon Ham, Yu Min Kim, In Hyeok Choi, 等. Generalizing Thermal Transport in High-Contrast Metamaterials through Interfacial Fresnel Reflection[J/OL]. (2026-08-26)[2026-09-11]. http://arxiv.org/abs/2608.25499v1.
Minimizing Grid Interconnection Capacity Requirements for AI Data Centers…
Securing grid interconnection capacity has become a bottleneck for AI data center projects and can take longer than constructing th…
Expand
Minimizing Grid Interconnection Capacity Requirements for AI Data Centers: A Developer-Side Planning Framework with Onsite Resources and Workload Flexibility
- Published
- 2026-08-30
- Authors
- Hassan Zahid Butt, Rida Fatima, Xingpeng Li
- Theme
- 算电协同
Abstract
Securing grid interconnection capacity has become a bottleneck for AI data center projects and can take longer than constructing the facilities themselves. This mismatch can delay deployment for years, making early interconnection planning essential. This paper develops ICP-AI, an interconnection capacity planning framework from a data center developer's perspective. The framework minimizes grid import capacity under a prescribed onsite investment budget while jointly sizing photovoltaic (PV) and battery energy storage system (BESS) resources and scheduling deadline constrained workload flexibility. A secondary refinement fixes the minimum grid capacity and selects the minimum-investment PV-BESS portfolio among solutions that achieve that capacity. The framework is evaluated using monthly composite stress profiles across varying temporal assumptions, load shapes, flexible load fractions, and deferral windows. Results show that interconnection capacity reduction depends strongly on the planning environment: at a $100M budget, it is about 6% for the high load factor baseline, exceeds 10% under monthly average solar availability, and reaches 13.3% for a more diurnal load. At a $10M budget, 5% flexible load with a 1 h workload deferral window reduces BESS capacity from 15.30 to 4.87 MWh while increasing capacity reduction from 4.43% to 4.84%. To test sensitivity to temporal compression, the model is also solved over the full 8,760 h chronology, which preserves the main capacity and flexibility trends. Overall, ICP-AI quantifies the interconnection capacity and infrastructure substitution value of workload flexibility, providing an investment-interconnection frontier to support capital allocation and early project planning in constrained grid environments.
Chinese interpretation
背景：AI 数据中心负载、功率密度和能源约束同步上升，算力负载与电网侧资源的协同调度正在成为智算中心设计的关键变量。问题：论文聚焦现有方案在效率、可靠性或工程协同上的瓶颈。方法：摘要显示作者采用建模优化、调度分析或算法评估，把运行负载、冷却/能源系统和基础设施约束放在同一分析框架中。结果：研究重点指向AI 负载波动对电网设备寿命和调频边界的影响。意义：对日报读者而言，它可用于判断智算中心建设是否受电网容量、负载波动和调度机制约束。仍需结合全文实验条件、样本范围和成本假设核验。
Reference
Hassan Zahid Butt, Rida Fatima, Xingpeng Li. Minimizing Grid Interconnection Capacity Requirements for AI Data Centers: A Developer-Side Planning Framework with Onsite Resources and Workload Flexibility[J/OL]. (2026-08-30)[2026-09-11]. http://arxiv.org/abs/2608.29359v1.
AIDC Microgrid Vulnerability Assessment Under Computing-Power Coordinated…
The rapid growth of large language model (LLM) services is expanding AI data centers (AIDCs), increasing electricity demand and ass…
Expand
AIDC Microgrid Vulnerability Assessment Under Computing-Power Coordinated Attacks
- Published
- 2026-08-11
- Authors
- Ze Yu, Hongwei Zhen, Chao Shen, Mingyang Sun
- Theme
- 算电协同
Abstract
The rapid growth of large language model (LLM) services is expanding AI data centers (AIDCs), increasing electricity demand and associated carbon emissions. Renewable energy integration can mitigate these impacts but also strengthens the coupling between AIDC loads and inverter-interfaced generation, creating cross-domain cyber-physical vulnerabilities. Specifically, adversarial AI requests alter AIDC power demand, whereas inverter control tampering modifies source-side dynamics, and their combined impact on system stability varies with generation forecast and demand response uncertainties. To this end, we propose an uncertainty-aware AIDC microgrid vulnerability assessment framework under computing-power coordinated attacks. First, the framework maps adversarial AI requests to AIDC power variations and represents uncertainties in attack-induced demand responses and photovoltaic (PV) forecasts through confidence-weighted realizations. Then, impedance based stability analysis combines these realizations with bounded inverter parameter tampering to construct attack reachable domains and identify critical attack time windows. Furthermore, a separate criterion identifies fixed coordinated attack vectors that retain destabilizing capability throughout each selected window. Case studies demonstrate that, unlike either attack component applied alone, coordinated attacks within identified critical windows induce sustained inverter frequency oscillations with peak absolute deviations exceeding 20% of nominal frequency, whereas the evaluated out-of-window response remains bounded. The proposed method further identifies critical attack windows and the associated coordinated attack vectors.
Chinese interpretation
背景：AI 数据中心负载、功率密度和能源约束同步上升，算力负载与电网侧资源的协同调度正在成为智算中心设计的关键变量。问题：论文聚焦现有方案在效率、可靠性或工程协同上的瓶颈。方法：摘要显示作者采用框架构建和频域/系统级分析，把运行负载、冷却/能源系统和基础设施约束放在同一分析框架中。结果：研究重点指向AI 负载波动对电网设备寿命和调频边界的影响。意义：对日报读者而言，它可用于判断智算中心建设是否受电网容量、负载波动和调度机制约束。仍需结合全文实验条件、样本范围和成本假设核验。
Reference
Ze Yu, Hongwei Zhen, Chao Shen, 等. AIDC Microgrid Vulnerability Assessment Under Computing-Power Coordinated Attacks[J/OL]. (2026-08-11)[2026-09-11]. http://arxiv.org/abs/2608.10645v2.
Beyond the Grid: Cost, Carbon, and Capital Requirements of On-Site Power …
Interconnection queues, not electricity prices, now govern where data centers can be built, and the standard levelized-cost compari…
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Beyond the Grid: Cost, Carbon, and Capital Requirements of On-Site Power Technologies for AI Data Centers
- Published
- 2026-08-08
- Authors
- Eliseo Curcio
- Theme
- 算电协同
Abstract
Interconnection queues, not electricity prices, now govern where data centers can be built, and the standard levelized-cost comparison answers a question no developer faces: it assumes a load profile, freezes the grid price while modeling the demand that moves it, and quotes busbar costs a facility cannot buy. This paper evaluates nine on-site supply technologies against a delivered grid whose price is endogenous to projected data-center demand, on a complete-site basis that retains standby charges, with measured GPU training load, delivered fuel prices, production-pathway carbon, and statutory 45V and 48E incentive mechanics. Nothing beats the wire: gas combined cycle produces at 47 USD/MWh but costs about 114 USD per megawatt-hour of complete site energy against a 92 USD grid; four-hour storage is physically capped near 18 percent of annual energy and, charged at the margin, dirtier than the grid; hydrogen from grid-priced power fails on cost and carbon together. An investment inversion converts these findings into capital terms: conversion-hardware learning buys nothing, because free hardware still exceeds the grid for every low-carbon arm, while global electrolyser deployment on sited sub-20 USD/MWh power brings PEM hydrogen power to about 2.2 times the grid at 300 billion USD and 1.9 times at 1 trillion USD (2.7 and 2.3 for the hydrogen engine), with a carbon reduction of roughly 85 percent (6.8-fold) against grid-power production. Grid parity is not purchasable at any budget. On-site supply is an access and depth product; most current investment targets the wrong term.
Chinese interpretation
背景：AI 数据中心负载、功率密度和能源约束同步上升，算力负载与电网侧资源的协同调度正在成为智算中心设计的关键变量。问题：论文聚焦现有方案在效率、可靠性或工程协同上的瓶颈。方法：摘要显示作者采用仿真建模和情景分析，把运行负载、冷却/能源系统和基础设施约束放在同一分析框架中。结果：研究重点指向AI 负载波动对电网设备寿命和调频边界的影响。意义：对日报读者而言，它可用于判断智算中心建设是否受电网容量、负载波动和调度机制约束。仍需结合全文实验条件、样本范围和成本假设核验。
Reference
Eliseo Curcio. Beyond the Grid: Cost, Carbon, and Capital Requirements of On-Site Power Technologies for AI Data Centers[J/OL]. (2026-08-08)[2026-09-11]. http://arxiv.org/abs/2608.08170v1.
The TRUTH about AI Data Centers (Energy Edition)
The Wall Street Skinny · Query: ACM SIGEnergy data center energy talk。Useful as technical or research context.
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WeCan'22: The Software- and AI-Driven Future of Renewables - Shivkumar Ka…
Noman Bashir · Query: ACM SIGEnergy data center energy talk。Useful as technical or research context.
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Why AMD's Data Center Business is Winning
Johnny $SMCI · Query: ACM SIGEnergy data center energy talk。Useful as technical or research context.
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电力并网与能源约束
Same-source item from the Chinese report. Verify details against the original linked source: 电力并网与能源约束
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PUE/WUE 与能效优化
Same-source item from the Chinese report. Verify details against the original linked source: PUE/WUE 与能效优化
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AI 芯片供给与交付
Same-source item from the Chinese report. Verify details against the original linked source: AI 芯片供给与交付
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Industry
Industry news, products, policy, financing, projects, and market-oriented videos.
Webinar Recording: Next Generations – Data Center Cooling Technologies
ASHRAE Pyramids Chapter · Query: ASHRAE data center cooling webinar。Useful for product, market, or deployment context.
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What does the biggest two-phase cooling CDU for data centers looks like?
Accelsius · Query: OCP data center cooling workshop。Useful for product, market, or deployment context.
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AI Data Centers and Water Use: Officials Clash Over What the Industry Nee…
BJN · Query: AI infrastructure datacenter panel discussion。Useful for product, market, or deployment context.
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AI Data Centers Aren’t Just Servers. Here’s What You’re Missing
Capital Decoded · Query: AI infrastructure datacenter panel discussion。Useful for product, market, or deployment context.
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AI Data Centers in 2026: NVIDIA Isn't the Real Delay
Future Tech - SaaS - AI Daily · Query: AI infrastructure datacenter panel discussion。Useful for product, market, or deployment cont…
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产业热度指数 6/10
Same-source item from the Chinese report. Verify details against the original linked source: 产业热度指数 6/10
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NVIDIA Blackwell/GB200/GB300
Same-source item from the Chinese report. Verify details against the original linked source: NVIDIA Blackwell/GB200/GB300
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AI 芯片供给与交付
Same-source item from the Chinese report. Verify details against the original linked source: AI 芯片供给与交付
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智算中心 CapEx/扩建
Same-source item from the Chinese report. Verify details against the original linked source: 智算中心 CapEx/扩建
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4. Video signals
The TRUTH about AI Data Centers (Energy Edition)
学术讲座 · The Wall Street Skinny · Query: ACM SIGEnergy data center energy talk
Open on YouTubeWebinar Recording: Next Generations – Data Center Cooling Technologies
标准组织讲座 · ASHRAE Pyramids Chapter · Query: ASHRAE data center cooling webinar
Open on YouTubeWeCan'22: The Software- and AI-Driven Future of Renewables - Shivkumar Kalyanaraman
学术讲座 · Noman Bashir · Query: ACM SIGEnergy data center energy talk
Open on YouTubeWhat does the biggest two-phase cooling CDU for data centers looks like?
行业论坛 · Accelsius · Query: OCP data center cooling workshop
Open on YouTubeWhy AMD's Data Center Business is Winning
学术讲座 · Johnny $SMCI · Query: ACM SIGEnergy data center energy talk
Open on YouTubeAI Data Centers and Water Use: Officials Clash Over What the Industry Needs
专家圆桌 · BJN · Query: AI infrastructure datacenter panel discussion
Open on YouTubeAI Data Centers Aren’t Just Servers. Here’s What You’re Missing
专家圆桌 · Capital Decoded · Query: AI infrastructure datacenter panel discussion
Open on YouTubeAI Data Centers in 2026: NVIDIA Isn't the Real Delay
专家圆桌 · Future Tech - SaaS - AI Daily · Query: AI infrastructure datacenter panel discussion
Open on YouTubeSources
Collection notes
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