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Reference library

PUE calculation UPS runtime Coolant water quality TEDAŞ Tier / TS EN 50600

1–24 / 1,044 sources

Technical guidePDFEditor’s pick

Open Compute Project Foundation 2023

Guidelines for Using Water-Based Transfer Fluids in Single-Phase Cold Plate-Based Liquid-Cooled Racks

Write the Table 1 targets (TSS, TDS, conductivity, copper and iron, pH, hardness, turbidity, bacteria, azole inhibitor, chloride) into the fluid specification as acceptance criteria and request a certificate of analysis from the supplier.

pH 8.0-10.5; total hardness below 30 ppm (below 2 ppm for fresh fill); turbidity below 5 NTU.

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White paperFree to readEditor’s pick

Schneider Electric 2024

The Different Types of UPS Systems

Store the IEC class code (for example VFI-SS-111) and the topology type on every UPS model, and compare models through those fields.

Standby and line-interactive units need almost 10 ms to detect a failure and transfer.

UPS Electrical

White paperCitationEditor’s pick

The Green Grid 2008

WP#14 - The Green Grid Metrics: PUE/DCiE Detailed Analysis

In the PUE/DCiE calculator, cite this paper as historical provenance.

Registration required; related standard ISO/IEC 30134-2.

Performance metrics Energy

RegulationFree to readEditor’s pick

Türkiye Elektrik Dağıtım A.Ş. (TEDAŞ) 2017

TEDAŞ-MLZ/99-031.B Technical Specification for Cast-Resin Dry-Type MV/LV Distribution Power Transformers

Default indoor data center transformers to cast-resin dry type; no oil pit is needed under the fire regulation.

First issue April 1999, second update April 2017.

Electrical Energy Fire safety

StandardCitationEditor’s pick

Türk Standardları Enstitüsü (TSE) Year not stated

TSE adoption lookup for EN 50600-2-4 (unverified)

Keep the cabling class selector separate, and document the reason whenever it is chosen lower than the power class.

Scope: telecommunications cabling infrastructure (EN 50600-2-4).

Reliability Electrical Cooling

Research paperFree to readEditor’s pick

Journal of Science Policy & Governance (Journal of Science Policy and Governance, Inc.) 2026

Is Power Usage Effectiveness (PUE) Still Fit for Purpose? An Integrative Review of Data Center Metrics for Assessing the Environmental Impact of Modern AI Infrastructure

Give the sustainability panel at least four axes (PUE, CUE, WUE/WUEsource and a placeholder for IT productivity) and show them as a radar chart, so a low PUE never appears alone.

Water-energy tipping point: in a hot, dry climate a further 10% cut in water use can raise total energy use by 25%; in a cool, humid climate the cost is low.

Performance metrics Water Sustainability

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Once a month: new library sources, changes to Turkish regulations and upcoming data centre events.

Technical guideFree to read

Energy Efficient HPC Working Group / Lawrence Berkeley National Laboratory 2011

"Hot" for Warm Water Cooling (SC11 State of the Practice paper, LBNL-5128E)

Implement this stack-up as a design check: from the site's 99.6% design wet and dry bulb plus per-component approaches, compute the achievable chiller-less supply temperature.

About 90% or more of heat is typically removed by liquid in the solutions considered.

Liquid cooling Cooling Energy

Technical guideFree to read

TELKODER - Telekomünikasyon Operatörleri Derneği 2021

12. Ulaştırma ve Haberleşme Şûrası – Haberleşme Çalışma Grubu Sektör Öngörü Raporu: Veri Merkezleri (TELKODER Görüşleri)

In benchmarking views, use the quoted regional PUE (about 1.6) as a Turkish baseline.

Average PUE is quoted as 1.59 worldwide and 1.62 in Turkey's region (DCD 2020).

Network Site planning Energy

Technical guideFree to read

U.S. Environmental Protection Agency (ENERGY STAR) 2026

16 More Ways to Cut Energy Waste in the Data Center (ENERGY STAR)

Map each measure to an efficiency-check rule: missing containment, UPS in double-conversion only, no economizer, and so on.

High-efficiency PDUs are 2-3% more efficient than conventional units.

Energy Cooling Airflow

StandardFree to read

ASHRAE 2011

2011 Gaseous and Particulate Contamination Guidelines for Data Centers (ASHRAE TC 9.9 White Paper)

Take corrosion-coupon classification as a site air-quality input; it drives humidity limits and filtration recommendations.

It is listed in the bibliography of ASHRAE Handbook-HVAC Applications 2019, Chapter 20.

Cooling Site planning

StandardFree to read

ASHRAE (announcement via HPAC Engineering) 2011

2011 Thermal Guidelines for Liquid Cooled Data Processing Environments (ASHRAE TC 9.9 White Paper)

In liquid-cooling design, tag facility water loops by W-class, noting that later editions may rename or revise them.

Class W1 facility water supply is 2-17 C.

Liquid cooling Cooling

StandardCitation

ASHRAE 2015

2015 ASHRAE Handbook-HVAC Applications, Chapter 19: Data Centers and Telecommunication Facilities

Support both W/m2 and kW/rack modes in early-stage load entry.

The Datacom Series then comprised 11 books produced by TC 9.9.

Cooling Racks Airflow

Technical guidePDF

European Commission JRC 2017

2017 Best Practice Guidelines for the EU Code of Conduct on Data Centre Energy Efficiency - Version 8.1.0 (JRC104370, EUR 28426 EN)

Store the best practice edition and version against each design so the compliance checker evaluates practices from the edition in force at design date (8.1.0 for 2017 projects).

5.1.6: cabinet doors need at least 66% perforated area, with 80% considered ideal.

Energy Cooling Airflow

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Technical guidePDF

European Commission JRC 2018

2018 Best Practice Guidelines for the EU Code of Conduct on Data Centre Energy Efficiency - Version 9.1.0 (JRC110666, EUR 29103 EN)

Keep the 2018 edition practices as a selectable compliance baseline for projects designed in 2018.

5.4.1.8 (value 5): investigate free cooling in all new builds and retrofits.

Energy Cooling Airflow

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Technical guideCitation

Uptime Institute 2018

2018 Data Center Industry Survey Results (8th annual) - report landing page

Use as a historical data point for 2018 in a PUE and rack-density benchmark chart (PUE 1.58).

Average PUE was reported as 1.58 in 2018 (as cited in a later Uptime publication).

Operations Performance metrics Racks

StandardCitation

ASHRAE 2019

2019 ASHRAE Handbook-HVAC Applications, Chapter 20: Data Centers and Telecommunication Facilities

Cite cooling design rules in an edition-aware way, distinguishing the 2019 and 2023 Handbook editions.

This is the 2019 edition; the 2023 edition is a separate library entry.

Cooling Airflow Liquid cooling

StandardFree to read

ASHRAE 2021

2021 Equipment Thermal Guidelines for Data Processing Environments - ASHRAE TC 9.9 Reference Card

Store class limits (A1-A4, B, C, H1) as data, with altitude derating functions and the coupon-dependent rh upper limit, in the rule engine.

Allowable dry bulb: A1 15-32 C, A2 10-35 C, A3 5-40 C, A4 5-45 C.

Cooling Airflow

Technical guideFree to read

Data Center World / AFCOM 2026

2026 Data Center Trends: AI, Cooling & Power Insights (AFCOM State of the Data Center session, Bill Kleyman)

Use AFCOM density figures (16 kW average; 50-70 kW for AI) as reference bands in the rack-density selector.

80 percent of respondents report workloads moving from public cloud back on-premises.

Racks Liquid cooling Energy

Technical guideCitation

Cushman & Wakefield 2026

2026 Global Data Center Market Comparison

Add grid stability (T&D loss %) and power-delivery timeline fields to the site comparison matrix.

Evaluates 107 markets across 24 variables.

Site planning Electrical Regulatory

Technical guideFree to read

JLL 2026

2026 Global Data Center Market Outlook

In the cost module, use $/MW shell-and-core benchmarks (with year) as a sanity range for capex estimates, and show tenant fit-out separately.

Tenant technology fit-out can reach $25M per MW for AI infrastructure.

Site planning Energy Electrical

Technical guideFree to read

Lawrence Berkeley National Laboratory 2026

2026 Large Load Literature Review and Data Sources (November 2026 update)

Use as a curated pointer list when updating grid-interaction and tariff knowledge.

The November 2026 update catalogs 49 publications in 12 thematic categories.

Electrical Regulatory Site planning

White paperFree to read

Schneider Electric 2023

3 Steps to Calculate Total Enterprise IT Energy Consumption Using DCIM

Model each meter point as a power-tree node with an aggregate flag so roll-ups never sum a parent and its child.

Unmetered devices: 60% of manufacturer rating x assumed hours of use.

Energy Performance metrics Sustainability

Technical guideFree to read

Caterpillar 2022

3,000 ekW, 60 Hz Generator Set: Diesel & HVO Test

Store a fuel compatibility list (diesel, HVO/EN 15940) with an HVO derate percentage and an HVO-specific maximum block-load step in the catalog.

Both fuels reached 1800 rpm in under 7 s and met NFPA 110 Type 10.

Generators Sustainability Energy

Technical guidePDF

Open Compute Project Foundation 2024

30 C Coolant - A Durable Roadmap for the Future, Revision 1.0 (Oct 2024)

Default the liquid cooling design wizard to an S30 (30 C) TCS supply with a 6 C CDU approach (24 C FWS) and 1.5 LPM per kW.

Typical CDU flow design is cited as 1.5 LPM per kW; CDU approach temperature is typically 4-8 C.

Liquid cooling Cooling Energy

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