Requirements
for data centres

Data centres are expected to process more and more data in less and less time, while also increasing energy efficiency as far as possible with an eye towards sustainability. A large portion of energy consumption is due to the need for cooling. Therefore, a well-designed cooling system – one which is adapted to the climatic conditions at the site and is as safe as possible thanks to sufficient redundancy – is an important prerequisite for smooth operation of a data centre.

An efficient cooling system is able to significantly increase the energy efficiency, or power usage effectiveness (PUE), of a data centre, ensuring that operating costs are minimised.

 

Cooling systems
in data centres

There are many ways to design a cooling system, from entirely direct or indirect free cooling and adiabatic cooling to direct water cooling of a number of components. In virtually all of these cases, water is used as a heat transfer medium in at least a portion of the cooling circuits.

Our water treatment units are designed to meet the needs of data centres. They are characterised by reliable operation with low maintenance frequency. We place great importance on resource efficiency, which can be seen in the consistently low energy and water consumption and the long service life of our units.

References
Water treatment plants Made in Germany

A blue world map highlights global references for Herco's industrial water treatment systems.

Reverse Osmosis Unit UO-S7 4000 AS/FU/SO
Cooling water in the data center of a car manufacturer in Germany

Reverse Osmosis Unit UO-D 30000 AS/FU/SO
Cooling water in the data center of a software company in Germany

Questions and answers on the topic of ultrapure water in data centres

Why is ultrapure water important in the data centre?

Data centres operate with a high computer density and generate a great deal of heat, which must be dissipated reliably. Water is used as a heat transfer medium for many cooling systems. Ultrapure water in the data centre prevents corrosion and deposits, ensures constant heat transfer, reduces maintenance costs and contributes to increasing the operational reliability and service life of the installations.

What role does cooling play in the data centre and how is it related to water treatment?

A large proportion of a data centre's energy consumption is used for cooling. Efficient cooling systems - e.g. direct or indirect free cooling, adiabatic cooling or water cooling circuits - are crucial for optimising power usage effectiveness (PUE). High-quality water treatment is necessary for these systems to function optimally and permanently.

What technologies and processes does Herco typically use?

Herco utilises proven processes such as reverse osmosis (RO), appropriate pre-treatment, filtration and, if necessary, redundant solutions. The systems are dimensioned to meet high requirements - both in terms of performance and reliability.

How does water treatment contribute to energy and cost efficiency?

Optimised cooling systems with high-quality water allow the cooling system (data centre) to work more efficiently, which reduces overall energy consumption. At the same time, good treatment reduces the use of chemicals and cuts maintenance and servicing costs. Together, these effects improve efficiency and reduce operating costs over the service life of the system.

Downloads
Product catalogue

Product overview 2025

Herco general catalogue 2025

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