Topic guide
Explore technical publications on data centre cooling systems, thermal loads and operating conditions. Review air and liquid approaches, energy use and operational requirements within each source’s scope.
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NREL 2018
Check whether the warm return water from liquid cooling (here 84 °F after energy recovery) leaves enough temperature difference to ambient for a dry or hybrid stage, and size it against local dry-bulb hours.
Uptime Institute 2018
For Tier III/IV targets, accept only generator ratings flagged 'continuous' or unlimited-hours in the sizing module
Headquarters, Department of the Army (U.S. Army Corps of Engineers) 2007
When writing an availability target into a data centre specification, state the measurement interval as well; the same downtime gives 95.83 or 99.86 percent depending on the interval.
Headquarters, Department of the Army (U.S. Army Corps of Engineers PREP) 2006
When modelling the power and cooling chain use these values as starting failure rates and MTBF/MTTR inputs and convert them into availability with the method of TM 5-698-1.
Türk Standardları Enstitüsü (TSE) Year not stated
Express the reliability target as separate class selectors for power, cooling and cabling instead of one label.
Türk Standardları Enstitüsü (TSE) Year not stated
You may cite the designation 'TS EN 50600-3-1', but do not add an edition year until it is confirmed in the TSE catalogue.
Türk Standardları Enstitüsü (TSE) Year not stated
Keep 2-10 and 2-6 as separate entries in rule or checklist citations.
Türk Standardları Enstitüsü (TSE) Year not stated
In early building and construction design, do not treat this record as a source of requirements; just note which part of the standard is relevant.
Türk Standardları Enstitüsü (TSE) Year not stated
Keep the power distribution class selector independent of cabling and cooling, and document path count and redundancy against the class chosen.
Türk Standardları Enstitüsü (TSE) Year not stated
Define the cooling class selector apart from power and cabling, and show the target class per domain in the project documents.
Türk Standardları Enstitüsü (TSE) Year not stated
Before writing 'TS EN 50600-2-5' in a deliverable, confirm the number and edition in the TSE catalogue; this record cannot do that.
Türk Standardları Enstitüsü (TSE) Year not stated
If a reference list cites '2-6', check which published part is actually meant and compare it against 3-1.
U.S. DoD (UFC) 2020
Set battery room scope by NFPA 1 (all stationary batteries of 48 VDC and above), put different chemistries in separate rooms, and avoid unrelated services and direct access; do not use the room for storage.
Vertiv 2021
Rule: rack kW > 20 suggests containment plus in-row cooling or rear-door heat exchangers; rack kW > 30-40 recommends liquid.
Uptime Institute 2026
Model 'reliability.target' as an enum {TierI..TierIV} driving topology defaults: Tier I single path N; Tier II N+1 capacity components, single path; Tier III N+1 components AND two distribution paths (one may be passive), concurrently maintainable; Tier IV 2N or 2(N+1), two active physically compartmentalized paths and continuous cooling with UPS-backed pumps/fans.
U.S. DOE FEMP / NREL 2019
Arrange the heat-rejection hierarchy as in the scheme: heat reuse first, then dry cooling, evaporative towers last; write the control logic in that order.
Vertiv 2025
Seed an AI-hall wizard template with: compute rack 73 kW, support rack 14 kW, liquid fraction 0.78, power 4N/3, cooling N+1, mechanical UPS 2N.
Vertiv 2024
Provide a "2N AI hall" preset to compare with the 4N/3 preset: 2N makes installed UPS 200% of load against 133% for 4N/3; show the capex and efficiency deltas.
Vertiv 2025
Make the capacity block a first-class object: block = UPS group + PDUs + CDUs + chillers sized for N pods, so no power is stranded.
Vertiv 2025
Implement mechanical UPS sizing explicitly: mechUpsKw = sum of CDU pump kW + CRAH fan kW for every unit that must ride through; default about 20 kW per 1.35 MW CDU (roughly 1.5% of liquid load) and about 17 kW per CRAH.
Vertiv 2025
In the campus planner define the 2,496 kW pod as a repeatable block; when the user picks N blocks, multiply UPS, CDU and chiller counts by the block count.
Vertiv 2024
In the layout engine add 200 mm to rack depth for liquid-cooled AI racks; manifolds and hoses do not fit standard depth.
Schneider Electric 2026
Compute and display WUE (L/kWh IT) next to PUE for every cooling design.
ASHRAE TC 9.9 2019
Enforce TCS supplyTemp >= roomDewPoint + 2 degC.
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