Reliable and energy-efficient solutions for CRAC /close control units
New energy and performance standards and low PUE targets in data centers, server rooms, and communication networks require Computer Room Air Conditioners (CRAC) with precise control to achieve high reliability, better humidity, and temperature settings as well as part-load efficiency. Ensure the cooling of your data server room will enable your business to perform at peak even with higher evaporating temperatures.
Precision air conditioning in data centers
Such cooling units need to operate reliably and provide cooling in both compressor and free cooling modes. The maintenance of stable temperatures and humidity is a key design challenge in these applications since they are used in environments where ambient temperatures often vary significantly during the day.
Danfoss microchannel heat exchangers (MCHE), scrolls with IDVs and inverter compressors, sensors, controllers, and electronic stepper motor valves let you adjust to temperature and load fluctuations to create cooling systems that safeguard these sensitive technologies while potentially reducing refrigerant charges. Our solutions include options for lower-GWP refrigerants. All of these backed up by Danfoss’s excellent technical support from our expert teams.
Features and benefits
All you need in one place, delivered by highly experienced air conditioning experts
Precise temperature control to safeguard sensitive equipment
Compact, space-saving units
Low energy consumption
Optimized for environmentally friendly, low GWP refrigerants
Reduced applied costs, short payback times and easy service
Dedicated customer service around the world
Key for application diagram:
- Pressure switch
- Ball valve
- Check valve
- Solenoid valve
- Filter drier
- Sight glass
- Expansion device
- Pressure sensor
NRV refrigeration check valves
NRV and NRVH can be used in liquid, suction and hot gas lines in refrigeration and air conditioning plants with fluorinated refrigerants. NRV and NRVH can be supplied with flare and solder connections. They are also available with oversize solder connections providing flexibility in the use of check valves.
ETS electric expansion valves
ETS is a series of electric expansion valves for precise liquid injection in evaporators for air conditioning and refrigeration applications. The valve piston and linear positioning design is fully balanced, providing bi-flow feature as well as solenoid tight shut-off function in both flow directions. ETS valves are compatible with electronic control solutions from Danfoss and other manufacturers.
Low PUE in data center cooling saves energy and costs
A British manufacturer have recently installed a scalable data center together with one of their customers which has achieved the impressive Power Usage Effectiveness rating (PUE) of 1.21.
For security reasons we cannot reveal the name and the location of the data center since the information managed by the servers is in many cases very sensitive.
Danfoss revamps medium and large programmable controls and introduces variable-speed VZH compressor management23 September 2020
Danfoss has upgraded its MCX15B and MCX20B controllers with the introduction of the MCX15B2 and MCX20B2 controllers. Both models combine best-in-class connectivity, security, and performance with improved compressor control logic for VZH inverter scroll compressors.
Third-generation VZH scrolls bring further seasonal efficiency gains27 May 2019
Danfoss has boosted the part load performance and the operating map of its leading VZH variable speed scroll compressor range. The third-generation of commercial inverter scrolls VZH retain the strengths of the previous version, with the addition of the Intermediate Discharge Valve (IDV) technology for enhanced seasonal efficiency, and a wider operating map.