Liquid cooling guidelines for datacom equipment centers by American Society of Heating Refrigerating and

By American Society of Heating Refrigerating and Air-Conditioning Engineers

Discusses cooling ideas structures specifications. Describes liquid loops for info heart, chilled, and condenser water structures. I-P units.

ASHRAE, based in 1894, is a world association of a few 50,000 people. ASHRAE fulfills its undertaking of advancing heating, air flow, air con, and refrigeration to serve humanity and advertise a sustainable global via study, criteria writing, publishing, and carrying on with schooling.

The ASHRAE Handbooks are the layout typical for regulate of outfitted environments with volumes on platforms and kit, HVAC functions, Refrigeration and basics. each one is up to date each 4 years. as well as publishing layout assistance for engineers, architects, and facility managers, we additionally submit a sequence of texts for lecture room use.

the various components we put up in include:
-Energy Modeling and Auditing
-High functionality development Design
-Indoor Air caliber and Environmental Quality
-Data middle strength Efficiency
-Noise & Vibration Control
-Humidity Control
-HVAC for Healthcare amenities

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These independent plants could even be in geographically different locations within the same facility. Advantages 1. 2. 3. High reliability. Redundant piping routes to load and a second cooling supply and return mains from the plant. Redundant cooling supply and return piping from a second central plant. 7 Double-ended loop with common cross branches. 4. 5. Individual pipe sections and future equipment installations are serviceable without system shutdown. Self-balancing. Disadvantages 1. 2. Increased installation costs.

Velocity Considerations. The velocity of the water in the CHWS loop piping must be controlled to ensure mechanical integrity is maintained over the life of the system. Velocities that are too high can lead to erosion, sound/vibration, water hammer, and air entrainment. Particulate free water will have less water velocity damage to the tubes and associated hardware. 1 provides guidance on maximum chilled-water piping velocities for systems that operate over 8,000 hours per year. 5 m/s). 4. Liquid Quality/Composition.

5 m/s). 4. Liquid Quality/Composition. 2 identifies the water quality requirements that are necessary to operate the liquid-cooled system. The reader is encouraged to reference Chapter 48 of the 2003 ASHRAE Handbook—HVAC Applications. This chapter, titled “Water Treatment,” provides a more in-depth discussion about the mechanisms and chemistries involved. 1 Water Quality Problems. The most common problems in cooling systems are the result of one or more of the following causes: • Corrosion: the dissolution of metals by water.

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