Data Centre Cooling Solutions

Primary Cooling Fluid DTX®

Advanced thermal fluid for data centre Primary, Facility and Technical Cooling Loops.

Cooling Fluid DTX® combines high-performance thermodynamic and hydrodynamic characteristics with low-toxicity credentials, providing an advanced alternative to conventional propylene glycol for data centre cooling infrastructure.

Available from DC Cooling Solutions, official partners and distributors of Castrol ON advanced thermal fluids.

Advanced thermal fluid for data centre cooling

Primary, Facility and Technical Cooling Loops can move significant volumes of fluid continuously through chillers, heat exchangers, CDUs, dry coolers and wider heat rejection infrastructure.

The properties of that fluid matter.

Higher viscosity increases the energy required to circulate coolant. Reduced thermal performance can increase the workload placed on cooling equipment. Poor fluid condition can also contribute to corrosion, contamination and declining system efficiency.

Primary Cooling Fluid DTX® is engineered to address these challenges.

DTX delivers thermodynamic and hydrodynamic performance characteristics associated with high-performance ethylene glycol cooling fluids while providing the low-toxicity credentials associated with propylene glycol.

The result is an advanced thermal fluid designed to improve the performance of data centre cooling loops without the traditional compromise between cooling performance and low toxicity.

Why DTX?

Lower viscosity. Better cooling performance.

Compared with conventional propylene glycol at equivalent freeze protection, DTX provides significantly lower viscosity together with enhanced thermal performance. This can:

  • Reduce hydraulic resistance
  • Reduce pumping demand
  • Improve heat transfer
  • Increase overall cooling efficiency
  • Reduce cooling energy consumption

For large data centre cooling loops operating continuously, improvements in fluid performance can translate directly into meaningful operational benefits.

Proven >10% COP improvement

Conversion from conventional propylene glycol to DTX has been proven to deliver Coefficient of Performance (COP) improvements of more than 10%, with comparable reductions in cooling energy consumption and associated carbon emissions.

Rather than replacing major cooling infrastructure, changing the thermal fluid can therefore provide a comparatively straightforward opportunity to unlock additional performance from equipment already installed.

Primary Cooling Fluid DTX® – Key Benefits

High-performance heat transfer

Advanced thermodynamic characteristics support efficient transfer of heat through the Primary, Facility or Technical Cooling Loop.

Lower viscosity

Reduced viscosity compared with conventional propylene glycol helps lower hydraulic resistance and the energy required to circulate fluid.

Low-toxicity credentials

DTX combines high-performance cooling characteristics with the low-toxicity credentials required for applications where conventional ethylene glycol may be undesirable.

Long-term corrosion protection

The formulation is designed to protect metals and materials commonly found within data centre cooling systems.

Fluid durability

DTX incorporates resistance to oxidation, thermal degradation and biological contamination, helping maintain fluid condition throughout its operating life.

Material compatibility

Compatible with metals, seals and other materials commonly used within data centre cooling infrastructure.

Long-term system performance

Reduced pumping demand, improved heat transfer and effective system protection can help improve both cooling efficiency and equipment longevity.

Where is DTX used?

Primary Cooling Fluid DTX® is designed for the facility-side cooling infrastructure within data centres. Applications can include:

  • Primary Cooling Loops
  • Facility Cooling Loops
  • Technical Cooling Loops
  • Chilled water systems
  • Chillers
  • Dry coolers
  • Heat rejection systems
  • Heat exchangers
  • Cooling distribution infrastructure
  • Facility-side connections to CDUs

Whether the infrastructure supports conventional air cooling, Direct-to-Chip cooling, immersion cooling or a hybrid cooling architecture, efficient heat rejection ultimately depends on the performance of the wider facility cooling system.

An advanced alternative to propylene glycol

Propylene glycol is widely used where low toxicity is required, but its comparatively high viscosity can impose an energy penalty, particularly as operating temperatures fall.

DTX provides another option.

Its lower viscosity and enhanced thermal characteristics enable operators to retain low-toxicity credentials while achieving significantly improved thermodynamic and hydrodynamic performance.

For existing propylene glycol systems, conversion to DTX can provide a practical route to improving cooling performance without wholesale replacement of the cooling infrastructure.

New cooling systems

The benefits of DTX can also be considered during the specification of new cooling infrastructure.

Higher fluid performance and lower hydraulic resistance can reduce the duty placed on pumps and cooling equipment, giving designers and operators greater flexibility when optimising cooling infrastructure for efficiency, capacity and long-term operating cost.

Fluid performance needs to be maintained

Selecting a high-performance thermal fluid is only the beginning. Concentration, contamination, corrosion protection and fluid condition can change over time and ultimately affect cooling performance.

DC Cooling Solutions provide specialist services throughout the DTX lifecycle, including:

  • Fluid selection and specification support
  • Pre-commissioning
  • System flushing and cleaning
  • Filling and commissioning
  • Fluid sampling and laboratory analysis
  • Lifetime fluid monitoring
  • Filtration
  • Fluid remediation
  • System optimisation
  • Fluid replacement and conversion

Combining the fluid with ongoing monitoring helps ensure its performance is maintained rather than simply assumed.

Castrol. Supplied and supported by DCCS.

DC Cooling Solutions are official partners and distributors of Castrol ON advanced thermal fluids.

DCCS combine access to Castrol ON Primary Cooling Fluid DTX® with specialist expertise in thermal fluids, fluid chemistry and hydronic cooling systems.

This means operators can access support not only with product selection and supply, but with the commissioning, monitoring and optimisation of the fluid once it is operating within the cooling system.

Product Downloads

Primary Cooling Fluid DTX®

Talk to our Cooling Fluids team

Using conventional glycol, specifying a new cooling loop or looking to improve the performance of existing data centre cooling infrastructure?

Talk to DC Cooling Solutions about Castrol ON Primary Cooling Fluid DTX®, fluid conversion and ongoing fluid management.

UK: 0800 888 6848

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