Ecological cooling systems
Matthias Borremans is LCL’s Facilities Project Manager.
He joined the company nearly a year ago. What exactly does his job entail? And which projects does he oversee?
Matthias tells all in this guest blog.
“As the Facilities Project Manager, I am responsible for overseeing various projects at LCL. One part of my work involves advising management when technologies or topologies need to be selected.
As a data center, we have to take a great many matters into consideration, and it is impossible to study everything, or design every element, without bringing in outside assistance. I therefore work with a number of engineering consulting firms that focus on different aspects of the data center.
One of the major projects on which I am currently working concerns the preparations for the construction of a new data center in Aalst. LCL already has a branch in Aalst, and it is building a second, 1200 m² data room behind its existing site. A data center cannot simply be thrown together. A study needs to be performed first, which can take up to 18 months. I check the study and monitor the implementation and delivery of the project. I always seek out the best technology and like to think outside the box. And as data centers are extremely energy-intensive, I like to come up with new ideas to help us be as environmentally friendly as possible.
For example, I considered the various cooling options for the new data center. One way to keep cooling generators cool is to spray water on them, in a process referred to as adiabatic cooling. This uses drinking water, however, which evaporates once it has been sprayed. We discussed the ethics of this within LCL, and asked ourselves whether it is acceptable to use drinking water for cooling and simply allow it to evaporate. A system of this kind does not consume a great deal of energy, is compact and can be fully redundant, but we decided it was not an environmentally responsible choice, and so we looked for an alternative solution. In the end, we opted for a system that can collect rainwater to cool down the dry coolers in hot weather.
In addition, the temperature range of the cooling water in the data center in Aalst will not be as low as in traditional systems. The cooling water will be cooled by the air outside when the outdoor temperature is lower than the temperature indoors (this is the case most of the year in Belgium), which means there will be no need to use cooling equipment. To ensure we can use this free cooling for as long as possible, we have selected the largest possible dry coolers, which will make it easier to remove heat. Using free cooling will allow us to achieve substantial energy savings.
The cooling system in the new data center in Aalst will be dual redundant (2N redundancy). This means there will be two backup cooling systems. As we want to maximize the space in the new data room, the cooling generators have been placed on the roof. To assist us with this, we called on the services of a stability engineer.
The construction project in Aalst is scheduled for completion at the end of 2018.”
Matthias Borremans, Facilities Project Manager at LCL