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COOLING
" When you ’ re designing a system you have many considerations , and an important one is peak demand . It ’ s all very well talking about the efficiency of adiabatic vs the efficiency of a chiller , but from a systems design , you must understand what the peak requirements are "
Benefits of evaporative For us as a data centre , it does several things . It gives us automatic inbuilt efficient humidity control during the winter season , which is where you get the real ESD ( electrostatic discharge ) issues . During summer you ’ ll be reasonably humid ; very rarely will you have days where you look at the temperature charts and it ’ ll duck below 30 %. Most of the time in the UK we sit in the 40-60 % band and above during summer . Whereas in winter , you can get cold dry days where it ’ ll plummet to well under 20 % once the air has been heated up from zero to the 21 ° C supply required within the data floors .
The big thing is efficiency . Where you ’ re choosing to use alternatives like fresh air for cooling ( compared to DX ), obviously it ’ s ambient dependent . So for example , if it ’ s 27 ° C outside then that ’ s the temperature you ’ re going to provide internally . Plus , you ’ re going to pick up a degree
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