作者: melody20541 時間: 2012-3-2 20:59 標題: 請問有冇C兄 玩過油冷 (用油代替水 不是浸油)
有冇C兄可以分享下 搵左好多都係浸油
作者: samtch 時間: 2012-3-2 21:07
本帖最後由 samtch 於 2012-3-2 21:16 編輯
回復 1# melody20541
我意見是油太稠了,水阻很大, 流量會不夠,把泵壓加大其實零件會要唔住..
唔知岩唔岩...有錯可以插..
作者: melody20541 時間: 2012-3-2 21:12
如果用D好似水咁既油 雙D5 流量可以解決?? 咁有咩零件會頂唔住
作者: zaisa123 時間: 2012-3-2 21:17
基本上用油代水 會比 直接用水差左~
因為 油既比熱容 比起 水好似 低一倍
咁樣既話姐係代表 水吸熱 上升1度 果時 油就 升2度 咁樣做唔到 想要既控溫效果 0.0
作者: melody20541 時間: 2012-3-2 21:24
油唔係吸熱量大D架咩
水吸熱快散熱快 定油快?
作者: samtch 時間: 2012-3-2 21:39
回復 2# samtch
水好似係有HYDROGEN BOND...中六好似學過..
作者: melody20541 時間: 2012-3-2 21:51
原來呢到D C兄個個都係物理王...
岩岩睇左水比熱容4200 油2000
原因就係HYDROGEN BOND
C兄勁呀!!!
作者: ds9flo 時間: 2012-3-2 22:07
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作者: melody20541 時間: 2012-3-2 22:20
回復 8# ds9flo
比熱容 既關係水已經係可以講係最好 升溫慢但降溫都慢 油升得快降得快
所以用大水箱 係有幫助架
作者: patricktang 時間: 2012-3-30 06:35
油熱左既話好似水流得咁快嫁喎~~
平時煮飯果陣見到D油好似水咁~~幾多度先可以咁又唔係好清楚(不過至少唔係你開機果陣可以流咁快
不過用黎做油冷可能
作者: lauyincheung 時間: 2012-3-30 07:17
本帖最後由 lauyincheung 於 2012-3-30 07:22 編輯
回復 1# melody20541
There will be a problem with the viscosity of your heat transfer fluid. Additionally due to the viscosity, you may not be a ble to get a high enough Reynolds number within the pipe, this will consequently make the heat transfer rate to be very inefficient. You will need the fluid to be in the fully turbulent region for effective heat transfer. Furthermore the heat input to the fluid may means that you will need cooling systems on your pump. Additionally the Prantdl number for oil is very high, this means the thickness of the thermal boundary layer is much bigger than the velocity boundary layer for liquid metals. Also non-newtonian fluids are quite tricky to deal with in terms of designing your cooling system as well as pumping it through a pipe.

