The engineer’s reference desk
481–504 / 1,044 sources
Schneider Electric 2012
Store UPS losses as a three-coefficient model (no-load, proportional, square-law) or a 0/25/50/75/100% curve, and record whether quoted efficiency includes input filters or transformers.
Open Compute Project Foundation 2022
Store the Table 1 properties (flash, fire and auto-ignition point, dielectric strength, resistivity, viscosity curve, GWP) in immersion fluid catalogue entries.
Scientific Reports (Springer Science and Business Media LLC) 2025
In a building-integrated edge data centre, distribute workload to servers so outlet temperatures are as high as possible (within standard limits); recoverable heat rose by up to 17.1% over random distribution.
arXiv preprint (National Laboratory of the Rockies) 2026
Size AI data-centre facility power with measured profiles rather than the rated design: even with all servers utilised, facility power reached only 73-80% of rated design.
arXiv preprint (cs.SE); Skyworkz / Sustainable Digital Infrastructure Alliance (SDIA) 2023
Compute IT carbon as (Es + Eo) × I + M and allocate embodied carbon (M) for shared resources by time and resource share; define scope, idle-time and shared-resource attribution explicitly.
Consulting-Specifying Engineer 2023
Offer an MV distribution template (13.2 kV, main-tie-tie-main, separated rooms) for multistory halls and compute conduit and cable quantities against 480 V.
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Legrand 2025
In the cabinet catalogue record supported PDU mounting positions (count, inside/outside, 0U slots) and whether mounting is toolless.
Ramboll 2019
Use as a reference case for the heat-export module: default the lift to 70-75 C via ammonia heat pumps.
IEEE Transactions on Sustainable Computing (Institute of Electrical and Electronics Engineers (IEEE)) 2017
In data-centre comparisons, do not use PUE as a cross-facility metric; normalise for IT load, weather and location, or state the same conditions.
Consulting-Specifying Engineer 2013
Implement IEEE 1584 working distances per equipment class in the MV arc-flash module.
Schneider Electric 2011
In the availability model give each UPS and cooling unit a failure-domain attribute (racks lost on its failure) alongside MTBF, so users can compare one large UPS with distributed or modular N+1 options by blast radius, not just component count.
Schneider Electric 2011
Auto-place 3 inlet temperature sensors per rack front, 1 humidity sensor per cold aisle, and leak rope around every CRAC/CDU and raised-floor water path.
Motivair 2023
Add RDHx entries to the catalog with nominal kW at the stated water and room conditions, flow limit, fan power and rack size compatibility.
Open Compute Project Foundation 2026
Add a sidecar power-rack block (600/711 mm wide, about 1200 mm deep, 6000 lb) to AI row layouts with its own floor-load and clearance checks, and model +/-400 VDC distribution from it to IT racks.
Uptime Institute Journal 2017
Evaluate the Tier checker on topology, with paths and components removed one at a time, not on component counts.
Frontiers in Environmental Science (Frontiers Media SA) 2026
In AI data-centre investment assessment in hot, arid regions, weigh carbon, water, social and governance criteria together with explicit weights (0.40/0.25/0.20/0.15); indirect water (desalination energy) was about 0.68 times direct cooling water.
Uptime Institute Journal (Uptime Institute) 2021
Tie the humidity control setting to the contamination class: allow the 70% RH upper limit only when coupon test results are entered and within limits.
Mortenson 2024
In the phasing module, model staged handovers with live-side/build-side separation.
Huawei Digital Power 2022
Support CUE, WUE and a heat-reuse fraction next to PUE in reports.
NFPA 2025
In the generator module, capture the EPSS class (fuel run time), type (start time) and level on the generator object and size fuel storage to the class.
NFPA 2025
In the UPS module (US profile), when a UPS feeds emergency or standby loads, record its stored-energy class (runtime) and test regime.
NFPA 2025
In a suppression calculator, compute agent quantity from protected volume, design concentration and minimum room temperature.
NFPA 2026
When NEC is selected, check article numbers against the 2026 edition because the reorganization moved content (for example the rules above 1 000 V).
NFPA 2027
In the arc-flash module, after the IEEE 1584 incident-energy calculation, produce NFPA 70E-style equipment labels (incident energy, arc-flash boundary, working distance).
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