The engineer’s reference desk
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KPMG Türkiye 2025
For racks above about 70 kW, warn that air cooling is insufficient and require a liquid-cooling path.
Türk Tesisat Mühendisleri Derneği (TTMD) - TTMD Dergisi 2021
In the site-selection tool, surface free-cooling hours by province for Turkish sites.
Türk Tesisat Mühendisleri Derneği (TTMD) - TTMD Dergisi 2021
Offer a W-class selector for liquid-cooled systems that sets supply-temperature ranges and links to whether chillers, dry coolers or towers are needed.
TMMOB Makina Mühendisleri Odası (MMO) 2025
In the commissioning module, include a TAB task list per cooling unit and hydronic circuit (design versus measured airflow, water flow, differential pressure, set points).
Kişisel Verileri Koruma Kurumu (KVKK) 2017
For customers who self-host SoSo CAD, generate a VERBİS-ready inventory (purposes, data categories, recipients, foreign transfers, security measures) from the product's data-processing configuration.
Panduit (Ning Liu), hosted by Cisco Year not stated
Use ER, MDA, HDA and EDA as physical planning roles and distinguish backbone from horizontal cabling.
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Schneider Electric 2015
Model PUE as a load-dependent curve of fixed plus proportional losses and show it at day-1, partial and full IT load rather than as one number.
Open Compute Project Foundation 2022
Default liquid-cooled designs to warm facility water (W40/W45) in chiller-free or dry-cooler-only plant options, citing this paper as supporting evidence.
Uptime Institute Journal 2025
Model annual water use from heat rejection type, set points and hourly climate rather than a fixed WUE.
Caterpillar 2021
Warn when planned monthly exercise or normal running load is under 30% of rating, and recommend load-bank testing or a reduced set count.
Consulting-Specifying Engineer 2023
Flag hot-climate risks in site design checks: ambient above 115 F, and recirculation between chillers and generator exhaust; suggest CFD.
Upsite Technologies blog 2019
Server catalogue entries should store the manufacturer's min/max inlet temperature and derive the ASHRAE class from it.
Eaton 2018
Add arc-flash attributes per switchboard (available fault current, clearing time, maintenance-mode/ZSI availability, working distance) and compute incident energy per IEEE 1584 for line and load side.
Rittal 2013
Model cooler redundancy explicitly: 2N may come from two units or one unit with dual independent power and water feeds, so catalogue entries need an 'internal redundancy' field.
Rittal 2012
Catalogue rear-door coolers with a passive/active flag, kW capacity and air-side pressure drop.
Huawei Digital Power 2023
Show WUE alongside PUE in the metrics panel, with region-specific targets as policy presets.
Open Compute Project Foundation 2022
Offer an 'OCP Ready' compliance profile that checks the delivery path (dock, ramps, door heights), floor load classes (uniform, concentrated, rolling), 3-phase IEC/NEMA rack circuits, hot/cold-aisle containment and generator load-acceptance time relative to BBU autonomy.
Open Compute Project Foundation 2026
Use as background for the 800 VDC and sidecar topology option.
Open Compute Project Foundation 2024
The energy model should report PUE with its category (1/2/3), load point and sampling period.
Rittal 2015
In the free-cooling estimator compute economiser hours from hourly climate data against the required water supply temperature and report the percentage of the year.
Rittal 2017
Catalogue close-coupled coolers by type (inline row, closed-loop rack, rear door, DX rack), rated kW, width, footprint, maximum air delta-T and water/refrigerant inlet temperatures.
Rittal 2014
Keep PDU catalogue fields for phases, input A, max kW, outlet types, ambient rating, metering accuracy, relay type and management protocol (SNMPv3).
Uptime Institute Journal (Uptime Institute) 2020
Add a vestibule or airlock option to the edge enclosure template.
Schneider Electric 2021
In a portfolio/edge module let users model multiple sites with availability (or tier), headcount served and severity (1-5), compute series availability for dependent sites and rank sites by downtime x severity.
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