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https://www.energystar.gov/products/low_carbon_it_campaign/12_ways_save_energy_data_center/water_side_economizer
Figure 15: Hours of ideal water-side economizer conditions in the United States. (Courtesy of DOE and The Green Grid) Unlike air-side economizers, water-side economizers can be economically retrofitted. Savings and Costs. During water-side economizer operation, ...
https://datacenters.lbl.gov/sites/all/files/2011EMEATechForum_TheEffectofDataCentreEnvironmentonITandEnergyConsumption.pdf
Copyright © 2011, The Green Grid Using The ASHRAE Classes Hours per year when dry bulb temperature less than or equal 27 O C The Green Grid has identified that much of Europe can benefit from air side economizers while remaining within ASHRAE Class 2 Recommended upper guideline of 27OC
https://www.energy.gov/sites/default/files/2013/12/f5/data_center_efficiency_and_reliabilit_at_wider_operating_ranges.pdf
The Green Grid Technical Committee . PAGE 2 Executive Summary ... economizers in general. With economizers, the greater the number of hours and days a year that they can be used, the less the mechanical chiller based cooling component of the infrastructure needs to operate.
https://www.thegreengrid.org/en/system/files/data-center-energy-efficiency_151-47%20white%20paper.pdf
8,765 hours). A 10 percent reduction in the IT load would create savings of $1.05 million, while a 30 percent improvement in cooling system efficiency would generate savings of approximately $580,000. 1. Proper Sealing of the Data Center Environment Cooling losses through floors, walls and ceilings, or the introduction of humidity from
https://betterbuildingssolutioncenter.energy.gov/sites/default/files/How%20Hot%20Can%20You%20Go_Raising%20Operating%20Temperatures%20in%20Data%20Centers.pdf
economizer hours when possible. My biggest bang is staying on my economizer as long as possible. With my water side economizer, it’s as far as I can go. Most later version data centers around me are using 100% outside air or probably half have gone to the Munters
https://controltrends.org/energy-monitoring-2/energy-saving-ideas/09/free-cooling-map-for-north-america-compliments-of/
Free Cooling Map for North America (Compliments of the DOE & The Green Grid) Energy Star: Air-Side Economizers bring outside air into a building and distributes it to the servers. Instead of being re-circulated and cooled, the exhaust air from the servers is simply directed outside. If the outside air is particularly cold, the economizer may ...
https://datacenters.lbl.gov/sites/all/files/WP46UpdatedAirsideFreeCoolingMapsTheImpactofASHRAE2011AllowableRanges.pdf
The total number of hours per year are then color-coded and blended to produce the maps. The psychrometric chart in Figure 2 provides a graphical representation of the original free air cooling algorithm. Figure 2 – Graphical representation of the hours summed for the 2009 Green Grid air‐side Free Cooling Map, based on ASHRAE Recommended ranges . The original maps show number of hours …
http://www.thegreengrid.org/
The Green Grid glossary provides definitions for hundreds of information and communications technology (ICT) and data center terms and acronyms. Download a simple way to enter, display, and store data for multiple facilities in accordance with the Performance Indicator metrics.
https://www.trane.com/content/dam/Trane/Commercial/global/products-systems/education-training/engineers-newsletters/airside-design/admapn020en-0406.pdf
Exceptions to Standard 90’s economizer requirement Section 6.5.1 requires economizers for all systems in all locations. But it also identifies the nine exceptions listed below. Note: Economizer systems may be used even if not required, provided that the economizer system conforms to the requirements in Sections 6.5.1.1 through 6.5.1.4.
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