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Data Center Chilled Water System

ClassificationNouvelles de l'industrie 46 0

Data Center Chilled Water System

 

Driven by developments in artificial intelligence, edge computing and the Internet of Things, modular data centers have become a critical component of successful operations for many businesses. The increasing reliance on computing makes the limitations of traditional modular data centers even more apparent. These disadvantages include a lack of flexibility, inefficiencies due to scale, and high costs associated with local transaction work.

Demands for more critical power, flexible cooling options and just-in-time IT capacity are also changing. Today, traditional data centers with 60-100kW and 10-12 racks may no longer be sufficient, highlighting the importance and relevance of modular data centers that can meet the dynamic needs of today’s enterprises. Amid these challenges, businesses may consider prefabricated modular solutions (PFM) and chilled water systems as more suitable options.

Use chilled water systems to accommodate high-density computing

Thermal management is an important pillar of successful data center operations. Effective thermal management not only ensures equipment reliability but also addresses issues such as cost control, operational savings and environmental sustainability.

In the past, thermal management in data centers has been dominated by direct expansion (DX) cooling units, also known as computer room air conditioners or CRAC units. These devices remove heat from the air through a vapor compression cycle. However, the market is now looking for alternative solutions that improve operational efficiency and energy efficiency, such as chilled water systems.

Chilled water systems use water instead of air for cooling. These solutions are also based on vapor compression, but often include free cooling capabilities and achieve greater overall efficiency through a wider range of centralized components outside of the white space.

In chilled water systems, refrigerant is stored in refrigeration units with pretested circuits to prevent leaks. Monitoring systems can detect leaks during operation and help prevent refrigerant loss. Chilled water systems can use other refrigerants with less impact on the atmosphere, including hydrofluoroolefins (HFO) and HFO blends.

 

Data Center Chilled Water System

 

Advantages of Chilled Water Systems

Chilled water systems offer several combined benefits, and this solution will become the dominant global cooling technology for data centers for the foreseeable future. These advantages include its inherent large-scale efficiency, the ability to take advantage of lower ambient air temperatures for free cooling, and reduced environmental impact through environmentally friendly refrigerants. These features enhance operational capabilities and align with global sustainability goals, making chilled water systems a strategic choice for future-proof data center operations.

1. Reduce carbon emissions

Chilled water systems can use low global warming potential (GWP) refrigerant types such as HFO to reduce direct emissions. To illustrate the environmental benefits of these refrigerants, let’s look at their impact on two common chillers:

Small and medium-sized data center chillers have traditionally used R410A (GWP1924), and alternatives such as natural refrigerants such as R454B (GWP466), R32 (GWP677) or R290 are now available.

Medium and large data centers have historically used chillers with screw, or centrifugal compressors to cool their equipment, using R134a coolant with a GWP of 1300. Now, they are switching to coolants such as R513A, which has a GWP of 573, or R1234ze, which has a GWP of less than 1, to reduce their environmental impact.

Chilled water systems therefore offer a more efficient alternative to traditional cooling methods and reduce direct emissions without requiring significant investments or changes to existing data center layouts.

Chilled water systems can also reduce indirect emissions by improving energy efficiency, potentially supporting partial power usage effectiveness (pPUE) below 1.1. With growing concerns about global warming and environmental sustainability, some regions are now mandating such thermal solutions.

2. Enhance data center security and flexibility

In addition to sustainability, the design of the system also deserves attention, especially given concerns about the flammability of modern refrigerants. Chilled water systems have the advantage of placing the cooling units outside the data center, mitigating any type of risk associated with the facility’s flammable refrigerants.

Additionally, chilled water systems offer inherent flexibility in outdoor cooling unit placement. Chilled water systems have no fixed configuration requirements and physical limitations and can be adapted to a variety of operational needs.

3. Improve continuity

What’s more, the chilled water system provides a strong continuity measure, utilizing auxiliary cold water storage tanks to enhance thermal reserves during power outages, ensuring uninterrupted cooling to maintain optimal operating conditions. With these multiple benefits, chilled water systems are a reliable and effective solution to meet the ever-changing demands of contemporary data center environments.

Chilled water systems are also available in non-raised floor designs, providing the flexibility to add liquid cooling to existing data centers. This is an emerging requirement for high-density computing needs that is gaining more and more attention over time.

4. The preferred solution for high-density support

Due to its reliability, scalability and enhanced thermal capacity, chilled water is used in a wide range of applications including telecommunications, government, energy/utilities, security, manufacturing and science. Chilled water is becoming the cooling method of choice for large-scale and high-performance computing applications.

 

Model One: 15 ~ 150kW

ModèleZLFQ-15ZLFQ-25ZLFQ-50ZLFQ-75ZLFQ-100ZLFQ-150
Plage de température +5℃~35℃+5℃~35℃+5℃~35℃+5℃~35℃+5℃~35℃+5℃~35℃
Eau de refroidissement5℃~30℃ Adopte une vanne de régulation Siemens/Honeywell pour contrôler le débit de l'eau de refroidissement.
Précision du contrôle de la température±0.2℃±0.5℃±0.5℃±0.5℃±0.5℃±0.5℃
contrôle du débit10~25L/min25~50L/min40~110L/min70~150L/min150~250L/min200~400L/min
Le contrôle du débit est ajusté par un convertisseur de fréquence, la précision est de ±0,3L/min.
Capacité de refroidissement (MAX)15kW25kW50kW75kW100kW150kW
Volume de stockage15L30L60L100L150L200L
BrinEau, huile de silicone, liquide fluoré, solution aqueuse d'éthylène glycol, etc.
contrôleurPLC, algorithme de contrôle PID flou, avec algorithme de contrôle en cascade
contrôle de la températureMode de contrôle de la température de sortie du fluide caloporteur, avec algorithme de contrôle en cascade
lettre d'accordInterface Ethernet Protocole TCP/IP
Interface RS485 protocole modbus RTU
Retour de température interne de l'appareilTempérature de sortie du fluide caloporteur de l'équipement, température d'entrée du fluide, température de l'eau de refroidissement
niveau du réservoirDétection des capteurs de pression pour l'importation et l'exportation, détection de la pression de l'eau de refroidissement
Pipeline moyenSUS304SUS304SUS304SUS304SUS304SUS304
Échangeur de chaleurÉchangeur de chaleur à plaques, attention particulière : il faut utiliser de l'eau d'usine propre.
panneau de commandeÉcran tactile couleur de 7 pouces personnalisé par Wuxi Guanya, affichage de la courbe de température, exportation des données EXCEL
SécuritéAvec fonction d'autodiagnostic ; protecteur de séquence de phase et de défaillance de phase ; protection contre la pression, relais de surcharge, dispositif de protection thermique et autres fonctions de protection de la sécurité.
Taille des interfaces d'entrée et de sortieG3/4G1G1DN32DN40DN50
Interface avec l'eau de refroidissementG3/4G1DN40DN50DN50DN65
méthode de refroidissementRefroidissement par eau, la température de l'eau à l'usine est inférieure de plus de 3°C à la température minimale fournie par l'équipement, et la fluctuation de la température de l'eau est ≤3°C.
Débit d'eau de refroidissement 7~20℃2,5m³/h4m³/h8m³/h13m³/h17m³/h25m³/h
alimentation électrique
380V 50HZ 1kW1,5 kW3kW4kW5kW6kW
coquilleTôle laminée à froid spray RAL7035

 

Model Two: 200 ~ 500kW

ModèleZLFQ-200ZLFQ-250ZLFQ-300ZLFQ-400ZLFQ-500
Plage de température +5℃~35℃
Précision de la température±0.5℃
Contrôle du débit15~30m³/h20~35m³/h25~40m³/h30~60m³/h40~70m³/h
Flow control is adjusted by frequency converter
Capacité de refroidissement(MAX) 200kW250kW300kW400kW500kW
Volume de stockage250L300L600L1000L1200L
Cooling SystemThe plant service water exchanges heat with the brine, and the brine provides cooling capacity for the heating equipment
MoyenEau, huile de silicone, liquide fluoré, solution aqueuse d'éthylène glycol, etc.
contrôleurPLC, algorithme de contrôle PID flou, avec algorithme de contrôle en cascade
contrôle de la températureHeat transfer medium outlet temperature control mode式
lettre d'accordInterface Ethernet Protocole TCP/IP
Interface RS485 protocole modbus RTU
Retour de température interne de l'appareilTempérature de sortie du fluide caloporteur de l'équipement, température d'entrée du fluide, température de l'eau de refroidissement
niveau du réservoirPressure sensor real-time monitoring
Pipeline moyenSUS304
System pressureUsing the pressure sensor to detect and display on the touch screen
Échangeur de chaleurÉchangeur de chaleur à plaques, attention particulière : il faut utiliser de l'eau d'usine propre.
panneau de commandeÉcran tactile couleur de 7 pouces personnalisé par Wuxi Guanya, affichage de la courbe de température, exportation des données EXCEL
SécuritéAvec fonction d'autodiagnostic ; protecteur de séquence de phase et de défaillance de phase ; protection contre la pression, relais de surcharge, dispositif de protection thermique et autres fonctions de protection de la sécurité.
Taille des interfaces d'entrée et de sortieDN65DN65DN65DN80DN80
Interface avec l'eau de refroidissementDN80DN80DN100DN100DN125
méthode de refroidissementRefroidissement par eau, la température de l'eau à l'usine est inférieure de plus de 3°C à la température minimale fournie par l'équipement, et la fluctuation de la température de l'eau est ≤3°C.
Débit d'eau de refroidissement 7~20℃34m³/h43m³/h51m³/h69m³/h86m³/h
Alimentation 380V 50HZ7kW7kW8kW9kW13kW
coquilleTôle laminée à froid spray RAL7035

 

unité de distribution de froid

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