Closed loop/Air Circuit Cooling System

Are your critical IT devices cooled correctly?

without cooling, up to a few minutes of heat can cause faults or stops. Offline is going to be expensive.

Close loop/Air Circuit Cooling System is the ideal solutions for terminating the unit Over dimensioning, Hot spot, higher energy consumption of your Data Center.

A data center today represents the heart of the IT installations in practically all companies. It is here that all important data and information are collected and stored. The demands for computing power are rising constantly in line with trends such as virtualization, big data and services for mobile devices. Despite the many efforts to reduce IT energy requirements through a diversity of technical and planning measures, the power consumption of the individual devices continues to rise due to the increasing packaging densities and miniaturization. As a consequence, there are at the same time ever greater heat losses to be dissipated from the installed equipment.

Energy efficiency is the declared aim of all data center manufacturers and operators.

The traditional approach “Room climate control with circulating air”:

Data centers with power losses of less than 5 kW per rack are traditionally cooled by way of CRAC systems. Even in modern or recently upgraded data centers, this form of cooling is still widespread. Cooling with CRAC systems becomes a challenge where IT racks with power losses in excess of 5 kW are to be cooled, or where individual racks with high power losses (hot spots) stand between racks with lower thermal loads. The difficulty here is to ensure that the appropriate volume of cooling air is routed to each rack via the raised floor. The space of the raised floor should also not be “abused” as a cable duct, as cables, cable fittings and other installation materials can massively impair the distribution of the cold air.

Another Problem:

which can nevertheless be solved – is mixing of the hot air with the freshly introduced cold air. This reduces the maximum possible difference between the intake and outlet temperatures (delta T), which in turn reduces the cooling output.

Whereas,

In terms of high-density heat load with hot spots the Closed loop/Air Circuit Cooling System should be deployed:

The Closed loop/Air Circuit Cooling System provides cooling for a complete rack suite. In contrast to a CRAC system, the cooling unit is not installed separately, but instead incorporated into the row of racks.
The equipment can be scaled up to the maximum cooling output required, and is thus also prepared for future increases in cooling requirements.
The Closed loop/Air Circuit Cooling System are able to function so efficiently because they take up and remove the heat directly at the source. That is what distinguishes the Closed loop/Air Circuit Cooling System from a classic room cooling system, which extracts the whole air of the data center under the ceiling, and then – after cooling – blows it back in front of the IT racks via a perforated raised floor.
It is mounted to the side of a rack. The combination of IT rack and Closed loop/Air Circuit Cooling System Unit constitutes a closed air circuit for cooling of the installed equipment. The hot air from the rear of the servers is drawn to the side by the fans of the Closed loop/Air Circuit Cooling System.
The Unit cools this air by way of an air/water heat ex-changer and blows the cold air back out in front of the servers.

close loop cooling

The cooling of the servers is independent of the ambient air in the data center and can thus be tailored flexibly to the power losses of an individual rack.
Modular expansion is similarly possible. Up to six fan modules can be fitted in a Closed loop/Air Circuit Cooling System Unit, enabling the cooling output to be matched to the actual demand.
Over- dimensioning, and the associated higher energy consumption, are avoided effectively.

Power Management Solution

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