Page 65

Technical System Catalogue Climate Control

CRAC system Rittal CRAC DX system The refrigerant-cooled CRAC DX system operates in conjunction with an external condenser unit that utilises external air for cooling. This combination is used prima- rily in small locations with a low cooling output. The CRAC DX system operates on the principle of direct evaporation, and is fitted as standard with the innovative Energy Save Control (ESC): At reduced external tem- peratures, the power consumption of the compressors is reduced while at the same time, their cooling output rises, so that redundant compressors may be switched off. Rittal CRAC CW system The water-cooled CRAC CW system may be used in conjunction with a Rittal IT chiller, so that the operating costs of the system may be reduced still further with optimum use of the external temperatures. The CRAC CW system is designed for IT rooms with a high thermal load, and may be combined with various mechanical cooling systems such as chillers or free coolers. Thanks to the underfloor fan arrangement, the enclosure is able to accommodate a filter and heat exchanger with increased surface areas. Energy saving through 3.3 kW at 44000 m3/h air volumeEnergy saving through redundancy operation: redundancy More space for larger heat exchangers and filters High cooling output with minimal space requirement and 2 fan units small footprint at full load, Low power consumption in year-round operation 1 fan unit standby: Very high energy-saving figures 2 x 3 kW = 6 kW Low maintenance costs 3 fan units at partial load: 3 x 0.9 kW = 2.7 kW Technical System Catalogue/Climate control 3 - 64


Technical System Catalogue Climate Control
To see the actual publication please follow the link above