Kaltra is set to launch its Lambda DX precision air conditioning system employing pumped refrigerant economizer. Lambda DX combines direct expansion operation during warmer ambient temperatures and refrigerant economizer mode during cooler temperatures, resulting in a reduction in annual power consumption for the system.
Why rack-level cooling?
Heat densities and, consequently, cooling costs rise a lot for modern data centers, making cooling efficiency the stirring topic for data center professionals. The reason for growing heat densities is advance in IT technologies like cloud computing, big data, artificial intelligence, and growth in mobile data volumes.
Lambda DX/FGB, the latest addition to Kaltra’s IT cooling portfolio, offers flash gas bypass technology for these precision air conditioners, improving the system’s energy efficiency. With more cooling for less space, Lambda DX/FGB delivers accurate temperature and humidity control, whilst contributing to lower energy use.
Kaltra is now offering its Lambda II-M range of modular precision air conditioning units with two cooling circuits as an option to standard units, to further increase overall system redundancy to meet the highest demands for critical IT cooling applications, including colocation and hyperscale data centers.
Over time, increasing power density and growing number of installed servers had increased the heat load on Telecity data center cooling system which operates on a 24/7 basis 365 days on the year. Existing fixed-speed chillers installed during the building’s construction could not meet the cooling demand and provide the necessary redundancy Telecity required. As a result, the cooling system needed to be upgraded to keep pace with the data center’s growth.
For decades, data centers have used raised floor systems to deliver cooled air to the server racks. Cooled air discharged by a computer room air conditioner (CRAC – a split air conditioning system or system with fluid coolers) or air handler (CRAH – a chilled water cooling system connected to air-cooled or water-cooled chillers) creates high pressure in the underfloor space. Read more
Among other innovations, Kaltra launches the second generation of its high-capacity in-row cooling solution designed for high power density data centers. With the cooling capacity of 141kW, Lambda In-Row is able to replace up to 4 typical in-row cooling units, saving expensive data center space for server racks.
Lambda In-Row has a new microchannel evaporator combined in V-form with a 41m² total heat transfer surface. With these evaporators, the cooling capacity of the new units increases from 90 kW to 141kW (for water temperatures of 15/21°C and inlet air temperature of 40°C). A special type of manifolds for microchannel heat exchangers provide a uniform water distribution, and at the same time keeps low waterside pressure drop.
Kaltra Innovativtechnik, a Germany-based provider of innovative thermal management technologies and advanced cooling equipment, today released the Lambda DX/DXU family of feature-rich, high-end direct expansion (DX) precision air conditioners with innovative microchannel evaporators and dual refrigerant circuit amongst many of its features.
Kaltra Innovativtechnik, a Germany-based cooling specialist, has launched its chilled water rack-based cooling solution intended for use in high-density data center applications. The development of the In-Rack solution is in response to growing demand for high-density cooling solutions from the data center sector for energy savings and reduction in carbon emissions.
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