White paperFree to read
Schneider Electric 2013
Power and Cooling Guidelines for Deploying IT in Colocation Data Centers
Warn when rack branch-circuit load exceeds 80% of breaker rating.
- More than 50% air leakage is routinely observed.
Topic guide
Airflow
Browse references on airflow management, aisle arrangements and rack inlet conditions. Investigate cooling distribution and air mixing alongside the measurement methods and modelling assumptions reported by each source.
- Sources
- 118
- Downloadable PDFs
- 37
- Years
- 2008–2026
All sources
73–96 / 118
Research paperPDF
Applied Sciences (MDPI AG) 2022
Predicting the Fire Source Location by Using the Pipe Hole Network in Aspirating Smoke Detection System
In ASD pipe network design, account for dilution of obscuration by hole count and distance from the detector; for long, many-hole pipes, verify time to alarm threshold and sensitivity by calculation.
- Test pipe: 20 m long with ten 5 mm sampling holes at 2 m spacing; a 20-hole variant was also studied.
Research paperPDF
Applied System Innovation (MDPI AG) 2026
Proactive Cooling Control Algorithm for Data Centers Based on LSTM-Driven Predictive Thermal Analysis
For predictive cooling control, plan at least one inlet and one outlet temperature sensor per rack; below that, prediction error rose by about 22%.
- The LSTM uses a 60 min input window and a 30 min prediction horizon, with a reported RMSE of 0.25 and R² of 0.985.
Research paperCitation
Energy and Buildings (Elsevier) 2021
Prototype energy models for data centers
Use the prototype densities and the approach-temperature concept to calibrate the tool's hourly cooling model and containment effectiveness.
- The models follow ASHRAE 90.1 minimum requirements across vintages.
White paperFree to read
Schneider Electric 2014
Raised Floors vs Hard Floors for Data Center Applications
Give each data hall a floor-system parameter: raised air plenum, raised piping only, or hard floor.
- A piping-only raised floor needs a depth of 0.4 m or less.
Research paperPDF
Sustainability (MDPI AG) 2026
Retrofit Optimization of Raised-Floor Plenum Thermal Performance for Energy-Efficient and Sustainable Operation of Non-Standard Campus Data Centers
For plenum imbalance, consider a 50%-perforated transverse baffle about 0.3 m from the unit outlet; 50% open gave a smaller resistance increase than 30% (8.5% against 18.7%).
- For S4, SHI fell from 0.42 to 0.35, maximum rack inlet temperature fell from 27.2 °C to 26.7 °C, and all racks met the 27 °C ASHRAE recommended limit.
White paperFree to read
Schneider Electric 2017
Specifying Data Center IT Pod Architectures
Make the pod a first-class object between room and rack, with feed power, input voltage, feeder breaker, feed redundancy, UPS location and rack count.
- Typical maximum continuous row length is 20-25 racks.
Research paperFree to read
Swiss Federal Office of Energy SFOE (Energy Research and Cleantech); preprint on arXiv 2025
Temperature Optimisation in Data Centres (TODC) - Final report
Add an IT-side penalty of about 0.3-0.6% of IT power per C of inlet rise above about 23 C (a configurable default) to the setpoint optimiser and energy calculator, and model fan power with the cube of speed.
- Reported hyperscale inlet temperatures: Google 26.6 C, Microsoft 27 C, Meta 29.4 C.
White paperFree to read
Schneider Electric 2015
Ten Cooling Solutions to Support High-density Servers
Set density warnings by air-distribution type: uncontained flooded return above 3 kW/rack average, uncontained raised floor above 3-6 kW/rack, fan-assisted retrofit ceiling 8 kW/rack, HACS/RACS pods up to 60 kW/rack.
- Fan-assisted devices raise rack cooling to 3-8 kW and should be UPS-powered.
White paperFree to read
Schneider Electric 2020
The Different Types of Air Distribution for IT Environments
Model each white-space zone with supplyMode and returnMode enums (flooded, targeted, contained).
- Flooded supply/flooded return cools up to 3 kW per rack and suits small LAN rooms under 40 kW.
White paperFree to read
Schneider Electric 2017
The Use of Ceiling-Ducted Air Containment in Data Centers
Add passive and active ducted racks and ducted HACS to the containment selector, with density limits tied to a ceiling plenum vacuum input (default 0.03 inH2O / 7.5 Pa, warning above 0.06 inH2O / 15 Pa).
- Cooling-to-IT airflow ratio: 1 for HACS, 1.2 or higher for ducted racks.
Research paperPDF
Buildings (MDPI AG) 2026
Thermal Environment Assessment for Energy-Efficient Cooling in Air-Cooled Data Centers: Measurement, CFD, and Predictive Models
In a design tool, set CFD accuracy expectations from this review's ranges (0.1-4 °C absolute, relative mostly below 20%) and do not limit validation scope to temperature; ask for velocity and pressure too.
- Of the 58 CFD studies, Fluent was used in 24 (41.4%) and 6SigmaDC in 12; standard k-epsilon in 41 (about 70.7%).
StandardCitation
ASHRAE 2021
Thermal Guidelines for Data Processing Environments, 5th ed. (ASHRAE Datacom Series Book 1)
Primary reference for the thermal-class data used by the rule engine; record the edition (5th) per project.
- New high-density server class H1 added.
Research paperPDF
Energies (MDPI AG) 2019
Thermal Performance Evaluation of a Data Center Cooling System under Fault Conditions
Calculate the permissible time for a cooling outage with a pipe-volume energy balance and set the backup-cooling start time accordingly (here 300 s); high-temperature, contained designs give less time.
- From 18 °C chilled water and 25 °C supply air, coil capacity fell below the load and inlet temperatures rose rapidly.
Technical guidePDF
U.S. Environmental Protection Agency (ENERGY STAR) 2023
Top Energy-Saving Tips for Setting up your Co-Location Data Center (ENERGY STAR flyer, 2023)
Make a blanking-panel and gap-filler check a required step in colocation cage and rack layouts, and flag unused rack units.
- Avoiding an unneeded server can save over $8,500.
Research paperPDF
arXiv preprint (Nanyang Technological University / NVIDIA AI Technology Center) 2025
Transforming Future Data Center Operations and Management via Physical AI
For fast what-if analysis consider a CFD-trained surrogate (inference about 0.01 s), but state that the surrogate is only as accurate as the CFD it was trained on and is not validated against measurements.
- The CapEx of building a data centre with 100k B200 GPUs is 4.5 to 5 billion US dollars and annual electricity OpEx can reach 400 million.
Technical guideFree to read
Data Center Frontier 2022
Understanding the Physics of Airflow in High Density Environments (Julius Neudorfer)
Implement the CFM = kW x 3412 / (1.08 x delta-T) check per rack and per tile.
- Doubling static pressure from 0.04 to 0.08 in. H2O increases tile airflow only about 130-145% (Table 4).
Research paperPDF
Energies (MDPI AG) 2018
Ventilation System Influence on Hydrogen Explosion Hazards in Industrial Lead-Acid Battery Rooms
Calculate battery room ventilation from hydrogen emission per BS EN 62485 (here 42.3 m³/h or 0.12 m² for a 20 m³ room) and separately show the time to reach LEL if ventilation fails.
- Battery rooms must keep hydrogen below its 4% vol LEL; hydrogen is flammable in air from 4% to 74% by volume.
Technical guideFree to read
TMMOB Makina Mühendisleri Odası (MMO) 2025
Testing-adjusting-balancing of data centres
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).
- The reported outcome is a 10-25% energy efficiency improvement.
White paperFree to read
Rittal 2013
White Paper - Data center climate control: An air-to-water exchange provides cooling efficiencies
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.
- Close-coupled units keep all 42U of a 2000 mm enclosure free for IT.
White paperFree to read
Rittal 2012
White Paper - Row-based cooling with the LCP Passive
Catalogue rear-door coolers with a passive/active flag, kW capacity and air-side pressure drop.
- The door opens 120 degrees and replaces a standard rear door, so it suits retrofit.
White paperFree to read
Rittal 2015
Whitepaper - The Cooling Technology of the RiMatrix S Data Centre
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.
- Battery life benefits from about 20 C storage temperature.
White paperFree to read
Rittal 2017
Whitepaper Rittal Liquid Cooling Packages
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.
- Hybrid doors come in 10 kW and 20 kW versions and open 130 degrees.
White paperCitation
The Green Grid 2009
WP#11 - Seven Strategies to Improve Data Center Cooling Efficiency
In the cooling advisor, tag each recommended measure (containment, set-point raise, economisation and so on) with its effect on the cooling component of PUE.
- The white paper is dated 28 September 2009.
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