Daikin has provided chillers for one of the biggest private hospitals in Qatar. The hospital has world-renowned International affiliations, and the mission to provide optimal patience care utilizing unparalleled and advanced services. For this reason, they needed reliable and advanced technology that could perfectly meet the needs of the 224 beds facility, which also includes 11 IPU (Integrated Procedures Unit), 15 NICU (Neonatal Intensive Care Unit), 8 CCU (Coronary Care Unit), 17 Pediatric and 12 Intensive Care Units, all in 101,000 sqm.
Cooling capacity: 11,000 kW
For this project the main need was chillers low power input. They needed chillers with a very good efficiency and a limited power, because they could not bring more than the power already assigned to the building by the government. That is a reason why consultants for this project went for the premium efficiency version of these chillers. They needed that to meet the load needs of the hospital while keeping the power input of the chillers low, which was very important, as other manufacturers, to provide the same cooling capacity, require higher power inputs.
Another reason for choosing Daikin, was reliability. These chillers will be installed on the rooftop of a facility near to the sea and hit directly by the sunlight. All that, clearly creates conditions that might be hard to stand for chillers, but since the consultants have had very good experience with Daikin in similar projects, they decided to confirm their trust in the brand. Besides that, customers decided to have units tested at Daikin Applied Europe’s factory, where operating conditions were recreated in a dedicated climatic chamber. The units were tested at temperatures between 46° and 52° C, not only to make sure that it could correctly function, but also to prove that could perform as expected.
The reliability aspect was very important also because the chillers will provide cooling for equipment in MRI rooms or CT scan rooms, for instance. So, having a reliable solution was fundamental to ensure both the comfort and the process needs of the hospital were met.
Daikin was able to meet the specifications offering 8 air-cooled screw compressors, which managed to beat the competitions thanks to the very low power input.
The screw compressor designed and manufactured by Daikin, differently from a screw compressor, 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 longer than other screw compressors. The single screw compressor, then, has only three moving parts. As a result of that, it reduces the possibility of failure and keeps operation costs low.
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