STULZ worldwide

CyberCool CMU

Coolant Distribution Unit for seamless heat transfer in liquid cooling solutions

As the heat density of server racks continues to increase at a rapid pace, liquid cooling systems have gained widespread acceptance as an effective method of heat dissipation. The STULZ Coolant Distribution Unit CyberCool CMU is a central component in both direct liquid-to-chip cooling and immersion cooling solutions to maximize heat exchange within a limited footprint. This unit completely isolates
the facility water system (FWS) and technology cooling system (TCS) sides of the liquid cooling system and accurately controls the supply temperature and flow rate of the coolant while consuming minimal power.

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Product Overview

At a glance Benefits Features Technical Data

Most important benefits

  • Supports Free Cooling throughout the year (ASHRAE W32 - W+ warm water cooling)
  • To enhance system compatibility, the unit offers a range of structural, electrical, and control options, including the flexibility to accommodate different liquids, power loads, and optional THDi filter

Most important features

  • Slightly oversized pipe diameter to increase watervolume and reduce pump power consumption
  • Variable-speed pumps ensure enhanced energy efficiency, especially under low loads, eliminating the need for liquid bypass
  • Optimized heat exchanger for the low temperature difference between the facility water system (FWS) and technology cooling system (TCS) circuits

Most important technical data

Rated heat exchange (kW): 345 – 1,380

  • Supports Free Cooling throughout the year (ASHRAE W32 - W+ warm water cooling)
  • To enhance system compatibility, the unit offers a range of structural, electrical, and control options, including the flexibility to accommodate different liquids, power loads, and optional THDi filter
  • Compact design with different sizes for easy integration into existing server rack structures
  • Integrated anti-condensation function
  • Optional leakage detection
  • Slightly oversized pipe diameter to increase watervolume and reduce pump power consumption
  • Variable-speed pumps ensure enhanced energy efficiency, especially under low loads, eliminating the need for liquid bypass
  • Optimized heat exchanger for the low temperature difference between the facility water system (FWS) and technology cooling system (TCS) circuits
  • High liquid quality is ensured by employing sanitary grade all-stainless steel pipes, while the built-in filter on the TCS side preserves a 50μm degree of water cleanliness.
  • Optional redundant configuration of key components such as controller, power supply and pumps
Rated heat exchange (kW) 345 – 1,380
Sizes 2
Rated water supply temperature
(facility water system)
32 °C
Rated liquid supply temperature
(technology cooling system)
36 °C
Dimensions

Height (mm): 2,000

Width (mm): 600/900

Depth (mm): 1,200 

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Engineered to precision

This unit houses essential components including water pumps, brazed plate heat exchangers, water valves, stainless steel pipes and controllers, providing a reliable and efficient liquid supply for your liquid cooling systems.

Optimized heat transfer

By isolating the FWS and TCS circuits, the risk of cross-contamination and leaks is significantly reduced, thereby enhancing the overall reliability of the cooling system. Furthermore, it allows for more precise control over each side of the cooling system, enabling better management of coolant flow rates, temperatures, and pressure, which in turn improves overall system efficiency.

Liquid Cooling

The increasing use of high-performance computers is presenting cooling infrastructure with new challenges. The efficient and reliable management of extremely high heat loads is of major importance. Consequently, the demand for innovative cooling solutions is on the rise, with liquid cooling (LC) emerging as a particularly promising option. STULZ stands as your global partner, offering cutting-edge solutions to tackle these challenges and ensure future-proof cooling infrastructure.

Learn more about Liquid Cooling

Precise control for greater reliability

Thanks to its flexible and precise control, CyberCool CMU ensures maximum reliability during continuous operation. In addition, to achieve the highest standards of reliability and usability, STULZ develops the controller in-house, ensuring that software, hardware and liquid cooling units are perfectly harmonized. The touch display provides clear menu navigation and intuitive operation of the controller.

Other advantages:

  • Regulation of pressure difference, flow rate, and temperature difference
  • Operation of coolant pumps in both cold standby and hot standby modes
  • Various control options including single machine control, group control, as well as local and remote control methods
  • RS485 serial port or RJ45 connections
  • Support for various protocols such as Modbus RTU, Modbus TCP/IP, BACnet IP, SNMP, HTTP, and others

Service and maintenance

  • All components can be accessed from the front or rear for maintenance purposes
  • Coolant pump, water valve, and other components feature shut-off valves at both front and rear for easy maintenance
  • Remote maintenance of FWS and TCS side filters
  • Remote automatic rehydration on the TCS side
  • Main components are connected with sanitary grade quick-release coupling for effortless disassembly

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Åland Afghanistan Albania Algeria American Samoa Andorra Angola Anguilla Antarctica Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bonaire, Sint Eustatius and Saba Bosnia and Herzegovina Botswana Bouvet Island Brazil British Indian Ocean Territory British Virgin Islands Brunei Bulgaria Burkina Faso Burundi Cambodia Cameroon Canada Cape Verde Cayman Islands Central African Republic Chad Chile China Christmas Island Cocos (Keeling) Islands Colombia Comoros Congo Congo-Brazzaville Cook Islands Costa Rica Croatia Cuba Curaçao Cyprus Czech Republic Côte d’Ivoire Denmark Djibouti Dominica Dominican Republic Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Eswatini Ethiopia Falkland Islands Faroes Fiji Finland France French Guiana French Polynesia French Southern Territories Gabon Gambia Georgia Germany Ghana Gibraltar Greece Greenland Grenada Guadeloupe Guam Guatemala Guernsey Guinea Guinea-Bissau Guyana Haiti Heard Island and McDonald Islands Honduras Hong Kong SAR of China Hungary Iceland India Indonesia Iran Iraq Ireland Isle of Man Israel Italy Jamaica Japan Jersey Jordan Kazakhstan Kenya Kiribati Kosovo Kuwait Kyrgyzstan Laos Latvia Lebanon Lesotho Liberia Libya Liechtenstein Lithuania Luxembourg Macao SAR of China Madagascar Malawi Malaysia Maldives Mali Malta Marshall Islands Martinique Mauritania Mauritius Mayotte Mexico Micronesia Moldova Monaco Mongolia Montenegro Montserrat Morocco Mozambique Myanmar Namibia Nauru Nepal Netherlands New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk Island Northern Marianas North Korea North Macedonia Norway Oman Pakistan Palau Palestine Panama Papua New Guinea Paraguay Peru Philippines Pitcairn Islands Poland Portugal Puerto Rico Qatar Reunion Romania Russia Rwanda Saint Barthélemy Saint Helena, Ascension and Tristan da Cunha Saint Kitts and Nevis Saint Lucia Saint Martin Saint Pierre and Miquelon Saint Vincent and the Grenadines Samoa San Marino Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Sint Maarten Slovakia Slovenia Solomon Islands Somalia South Africa South Georgia and the South Sandwich Islands South Korea South Sudan Spain Sri Lanka Sudan Suriname Svalbard Sweden Switzerland Syria São Tomé e Príncipe Taiwan Tajikistan Tanzania Thailand The Bahamas Timor-Leste Togo Tokelau Tonga Trinidad and Tobago Tunisia Turkey Turkmenistan Turks and Caicos Islands Tuvalu Uganda Ukraine United Arab Emirates United Kingdom United States United States Minor Outlying Islands Uruguay US Virgin Islands Uzbekistan Vanuatu Vatican City Venezuela Vietnam Wallis and Futuna Western Sahara Yemen Zambia Zimbabwe
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