Every since the Internet began to permeate our lives in the early 1990s, telecom companies have developed at a breath-taking pace. New nodes and server farms are still being built all over the world. All of these facilities require lots of cooling capacity. In areas of moderated ambient temperatures, server farms are suitable for free cooling.
Whenever the ambient temperature is lower than the return temperature from the equipment, the cooling medium is routed through the dry cooler and cooled by the ambient air. This relieves the refrigerating machine and decreases its workload. Below a defined ambient temperature, the dry cooler assumes the complete cooling capacity and the refrigerating machine switches off. This kind of system can cover a large part of the annual operating hours with free cooling, resulting in significant energy savings.
In our many years of experience we have successfully solved many problems. We can be particularly helpful in three areas:
- Cost philosophy
The project's owner should know from the start which cost philosophy he wants to pursue. Does he want to minimise his investment costs or his operating costs? As part of this decision, he should also determine the planned life cycle of the system and any future expansion plans.
- Architecture and surroundings
Other important criteria for selecting the right condensers and dry coolers are: the available space, visual screening, type of construction, noise requirements, and the aggressiveness of the ambient air, which can cause problems near the ocean or in industrial areas.
Thermodynamics are affected by the ambient temperature and the fluid being used, as well as the installation's load profile, fluid temperatures, pressure drop, and location. For example, it makes a huge difference whether the system is installed in Moscow, Madrid, or on the top of Mont Blanc.