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Project Stories
Daikin has been recently involved in the commissioning of a new air-cooled chiller at CERN.
The project required the installation of a unit at the BA6 building, one of the facilities at CERN housing equipment related to the functioning of one of the accelerators.
Products
1x EWAH-TZ
Total cooling capacity: 676 kW
About the project
The Building BA6 is a facility housing power converters, electrical switchboards, and cooling equipment used for the Super Proton Synchrotron (SPS) accelerator and the experiments being performed with it.
The SPS is a particle accelerator of the synchrotron type, which accelerates protons and heavy ions to provide beams for the Large Hadron Collider (LHC) and for experiments such as NA62 and COMPASS.
The chillers provided are used to cool down the power converters through air handling units, so the heat generated can be dissipated, ensuring the reliability and the correct functioning of the power supply system.
The main needs for this project, as usually happens for CERN’s labs, were:
- compliance with regulations,
- need for an energy efficient solution,
- and absolute reliability given the importance of the activities carries out at CERN’s laboratories.
About the solution provided by Daikin
For this project, all the aspects mentioned above were addressed using a chiller from the Daikin VZ range of units.
The VZ series perfectly met CERN’s needs, thanks to Daikin In-house designed Inverter Single Screw compressor technology, which can guarantee exceptionally high efficiency levels. That happens especially when the units are operating at partial loads. In fact, thanks to the inverter, directly integrated in the compressor, the chillers can perfectly match the cooling capacity demand from the facility, which might change based on the workload of the equipment that needs to be cooled down.
Read more here about Daikin Single Screw compressor with Inverter
Besides energy efficiency, the environmental impact aspect was addressed by using a unit with HFO refrigerant R-1234ze, which ensures a GWP value (Global Warming Potential) as low as 7.
The newly redesigned single screw compressor by Daikin stands out for providing outstanding performances despite the compact footprint. That is possible thanks to the new screw profile, which allows the compressor to be perfectly optimized for operations with R-1234ze refrigerant.
The single screw compressor also helped giving the HVAC system reliability.
Daikin has a history of leadership in the field of single screw compressor chillers, which have been installed all over the world for 20 years.
Daikin screw compressor, besides being well-knows for efficiency, differently from standard screw compressors, it uses one main screw meshing with twin star rotors to produce volume matching compression cycle. Due to the main rotor, balanced in both radial and axial direction, the compressor bearing has extremely high reliability. Therefore, its life span can be significantly longer than other screw compressors. Then, having only three moving parts, possibilities of failure are minimized and operation costs kept low.
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