Knürr DCD


Knürr DCD is an air-water heat exchanger that is integrated into the rear door of a server cabinet. The heat exchanger serves to absorb heat loads from server racks of up to 50 kW. Knürr DCD is configurable with Knürr DCM cabinets or can be mounted to other vendor cabinets. The design of the heat exchanger permits an increase in the chilled water temperature.


Cooling is effected when the server exhaust air flows through the heat exchanger in the rear door of the server cabinet. Thereby, the cooling air is moved through the heat exchanger by the server fans. Thus, Knürr DCD supports the cold room concept in which the warm exhaust air from servers is always led to a recooling device where it reduced to the temperature level of the server supply air. The supply air for cooling flows freely through the installation area. By omitting the otherwise necessary fans for room cooling, the cooling principle of Knürr     DCD is particularly energy-efficient.


Furthermore, the design of the air-water heat exchanger permits in increase in the chilled water supply temperature, which also adds to an improved energy balance and large shares of free or adiabatic cooling. All this yields a significantly improved PUE (Power Usage Effectiveness).


Due to low hydraulic pressure loss on the air side, the system suggests itself to suit a wide range of server types. Prior to using Knürr DCD, the system and servers must be checked whether they match hydraulically. In particular, it must be made sure that the pressure increase of the server fans is sufficient for the flow resistance of Knürr DCD. The low pressure loss on the water side minimizes the energy consumed by the pumps in the chill-water net.


Knürr DCD is designed exclusively for sensible cooling, any dehumidification of the room by means of Knürr DCD should be avoided. The inclusive condensed water collection pan with a condensate drain is designed for short-time dewing only. Knürr DCD is especially suited for use in Knürr DCM server cabinets. This guarantees an optimal mechanical interface and appearance of the system in the Knürr design. The swivel joint allow particularly simple operation and safe assembly. The door can be opened up to an angle of 160°. Adaptor for 3rd party cabinets can also be selected to fit existing datacenter infrastructure.


Best Suited For:

Banking, Financial and Insurance - Data Center/Colocation/Hosting - Education -Government - Healthcare -Telecom



Liebert DCL - Modular Rack Cooling up to 35 kW


The Liebert DCL is the Thermal Management unit for lateral attachment to server cabinets offering a wide range of features designed specifically for data center applications. The unit is available in two different architectures, closed or hybrid loop, and in multiple combinations of up to four server racks to match any customer needs.



Best Suited For:

Banking, Financial and Insurance - Broadcast and Entertainment -Data Center/Colocation/Hosting


Coolblast Fan Unit


Fan unit CoolBlast is a compact unit equipped with 3 or 6 axial/diagonal fans for installation in 19” (482,6mm) enclosures. By using CoolBlast air circulation inside the cabinet can be improved and thereby better cooling for electronic components. Fan tray delivered in 3 equipment variations: Non-regulated version, Thermostat-controlled version (AC power only), Speed-controlled version


Fan tray delivered in 3 equipment variations:Non-regulated version, Thermostat-controlled version (AC power only), Speed-controlled version.


Fan unit CoolBlast is a compact unit equipped with 3 or 6 axial/diagonal fans for installation in 19” (482,6mm) enclosures or     as roof fan unit.



Best Suited For:

Banking, Financial and Insurance Broadcast and Entertainment - Education - Government - Healthcare - Fire/Alarm/Security - Power/Gas - Transmission and Distribution Professional Services Retail and Wholesale - Telecom - Transportation - Water Supply/Sewage Disposal



Liebert HPD - Dry Cooler


HPD Dry Cooler systems are outdoor units that dissipate the heat coming from water-cooled (water or glycol mixture up to a 40% concentration) direct expansion indoor units.


Liebert HPD dissipates heat coming from water-cooled direct expansion indoor units. Specifically designed for High Performance Air Conditioning (HPAC) applications, Liebert HPD outdoor units can operate with water or glycol mixture up to a 40% concentration. If connected to Liebert indoor freecooling units, they can take advantage of low external ambient temperatures to cool the room thus minimizing the use of compressors. The resulting energy savings can be up to 30% per year.



Best Suited For:

Telecom Data Center/Colocation/Hosting