引用:
作者chaotommy
The reason the drives are filled with helium is to reduce turbulence inside the hard drive associated with normal air. The helium used inside the drive is 1/7 of the density of normal room air allowing for lower power consumption and lower operating temperature inside the drive.
http://www.dailytech.com/HGST+Unvei...rticle33677.htm
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比起空氣來說, 擾流可以少一點, 工作溫度可以低一點
從流體力學的觀點來看是這樣沒錯, 但實際效益如何就不知了?