Cooling water composition guidelines

Water quality and leveling requirements, and condensation management

In this section
Water quality requirements and specifications	64
Leveling requirements	66
Condensation management	67

Water quality requirements and specifications

Tap water might be sufficient for some closed-loop systems. Water quality in a closed-loop system encounters problems with scaling, blockage, leaks, and corrosion that are typically found in tap water containing many chemicals and minerals. Determining the acceptable water quality range is the most essential element of the system requirements. For more information, see the HP Modular Cooling System Site Preparation Guide on the HP website (http://www.hp.com).

•The closed-loop water must not contain any lime scale deposits or loose debris.

•The water should have a low level of hardness, particularly a low level of carbon hardness. However, the water should not be so soft that it attacks the materials with which it comes into contact.

•A 1-micron filter should be used to remove free floating particulates and regularly maintained.

•Salt content should be monitored because it rises over time as a result of evaporation in the systems, causing the water to become more corrosive. (Electrical conductivity increases as the concentration of dissolved substances rises.)

•Periodically some of the enriched water should be removed and new fresh water should be added to avoid the formation of Gypsiferous water, which is unsuitable for cooling purposes. Gypsiferous water has a tendency to form boiler scale, which is particularly difficult to remove.

•Cooling water should be free from iron and manganese because these minerals tend to settle in the pipes and cause blockage.

•The presence of organic impurities with algaecides and other inhibitors should be minimized to reduce the creation of sludge deposits and microbiological contamination.

Acceptable water quality range

The following are water quality ranges required for continuous quality of performance for the MCS unit:

Hydrological data		Acceptable range

pH value		7–8.5

Carbonic acid		> 3 < 8 ºdH

	Water quality and leveling requirements, and condensation management 64

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.