Closed-loop water specifications

Raw water

Treated water system

 

 

 

Molybdenum (Mo)

50–300 ppm

50–300 ppm

 

 

 

Tolytriazole

15–20 ppm

15–20 ppm

 

 

 

Suspended solid

< 1 ∝m

< 1 ∝m

 

 

 

Monitoring the quality of cooling solutions

Depending on the type of installation, it is advisable to put in place certain processes and procedures for monitoring the quality of the cooling solution and for performing preventative maintenance. The following table lists common types of contamination and techniques to eliminate them:

Type of impurity

Procedure

 

 

Mechanical

Filter the water using 1-micron filter (3.9e-5 in), sieving

contamination

filter, sand filter, cartridge filter, or pre-coated filter.

 

 

Hardness too high

Soften the water through ion exchange.

 

 

Moderate content of

Add stabilizers, dispersing agents, or both to the water.

mechanical impurities

Use Azole treatment for copper corrosion.

and hardness agents

 

 

 

Moderate content of

Use Anodic inhibitors: Nitrite based treatment

chemical impurities

Use Cathodic inhibitors: Molybdate based treatment

 

 

Inoculate the water with passivators, inhibitors, or both.

 

 

Biological impurities,

Inoculate the water with biocides.

microbacteria, and

 

algae

 

 

 

To ensure ongoing safe reliable operation of the closed-loop cooling system, see "Acceptable water quality range (on page 64)."

Frost damage

To avoid frost damage, the water temperature must not be allowed to fall below the minimum permissible temperature of +4 ºC (+39.2 ºF) at any point in the water cycle.

Before storage or transportation at sub-zero temperatures, the water cycle must be drained completely using compressed air. Avoid setting the target temperature lower than is necessary because the danger of falling below the dew point increases as water temperature decreases (condensation buildup). Ensure that the enclosure is sealed on all sides, and in particular at the cable inlet (condensation formation).

Leveling requirements

Adjust the MCS leveling feet so that the unit is level.

For more information about seismic area considerations, refer to the HP Modular Cooling System Site Preparation Guide on the HP website (http://www.hp.com).

Water quality and leveling requirements, and condensation management 66

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HP Modular Cooling System manual Leveling requirements, Monitoring the quality of cooling solutions, Frost damage
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Modular Cooling System specifications

The HP Modular Cooling System (MCS) is a state-of-the-art solution designed to efficiently manage the heat generated by high-density IT environments. As data centers face the ever-increasing demand for processing power, traditional cooling methods often fall short, leading to inefficiencies and raised energy costs. The HP MCS addresses this issue with a scalable, flexible design that optimizes cooling performance while minimizing energy consumption.

One of the main features of the HP Modular Cooling System is its modular architecture, which allows for easy expansion and customization based on the specific needs of a data center. This scalability means that as a facility grows or changes, the cooling system can be modified without the need for extensive renovations or replacements. The MCS can be installed in various configurations, further enhancing its versatility.

The technology behind the HP MCS includes advanced cooling methods such as direct evaporative cooling and chilled water cooling. Direct evaporative cooling utilizes the principles of evaporative heat exchange to cool air without excessive energy consumption, making it an eco-friendly choice. In contrast, chilled water cooling uses a network of pipes filled with chilled water to remove heat from the server environment efficiently. This combination allows the MCS to adapt to various heat loads and ambient conditions.

Another notable characteristic of the HP Modular Cooling System is its intelligent controls and sensors. These components continually monitor temperature and humidity levels within the data center, automatically adjusting cooling output to maintain optimal conditions. This proactive approach helps to prevent overheating, reduces energy usage, and ensures the longevity of IT equipment.

Energy efficiency is further enhanced through the MCS's integration with HP's monitoring and management software. This software analyzes cooling performance trends, providing actionable insights for facility managers, enabling them to make informed decisions regarding cooling strategies. Additionally, the system is designed with environmentally sustainable practices in mind, aligning with global initiatives to reduce carbon footprints and promote green technology.

The HP Modular Cooling System stands out for its combination of innovative technologies, flexibility, and a commitment to energy efficiency. As data centers continue to evolve, the MCS remains a crucial asset in the pursuit of optimized performance and sustainability, providing a reliable solution to meet the demanding cooling needs of modern IT infrastructure.
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