Acceptable water quality specifications

available, the provided system pressure difference must be slightly higher than the maximum pressure loss with a fully opened control valve.

Closed-loop water must not contain any lime scale deposits or loose debris. The water must have a low level of hardness, particularly a low level of carbon hardness. Filters must be used to remove free floating particulates and regularly maintained. The water must not be so soft that it corrodes the materials that it comes into contact. You must periodically add new fresh water, and remove some of the enriched water. HP recommends a #30 mesh filter for filtering water fed to the MCS-200/100 and a 1 µm filter for prolonged performance.

The following values are water quality ranges required for continuous quality of performance.

Parameter	Range

pH	7-9
Specific conductance at 25ºC (77ºF)	<2500 µmhos
Sulfur (SO4), total	<100 ppm
Chloride (Cl)	<50 ppm
Sulfide (S)	<10 ppm
Hardness (CaCO3), total	<200 ppm
Iron (Fe), total	<3.0 ppm
Manganese (Mn), total	<0.1 ppm
Bacteria	<1000 CFUs/ml
Residue on evaporation	<500 ppm

Turbidity	20
Corrosion inhibitor	Recommended

CAUTION: Contaminated water might cause decreased cooling capacity or disruption in service. The water flowing into the MCS-200/100 unit must meet the guidelines stated in the HP Modular Cooling System 200/100 Site Preparation Guide. Damage caused by contaminated water is not covered by the MCS unit warranty.

If your water is out of range, consult a water quality expert.

HP recommends using particulate filtration on the dedicated water supply system connected to the MCS-200/100 unit.

Additional water precautions

The following actions should be taken during the installation of the MCS-200/100:

•Be sure all foreign matter and particulates are flushed from the system prior to installing the water kits for the MCS-200/100.

•Evaluate the short- and long-term system requirements against available water capacity.

•Be sure your facility water loop is properly designed for liquid cooling systems and separate from the sanitary water systems within your building—for example, bathroom, sink, or drinking water.

Facility planning for implementation 78

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.