如題..點解好的heat sink的heat capacity係越低越好的?
我好唔明丫><咩唔係應該要有high heat capacity先好架咩?
但點解會係low heat capacity先好架?!
有無人可以解答我丫?
thx!!!!!!!!!!!!!!!!
點解好的heat sink的heat capacity係越低越好的?thx!!!!!!!!
2007-09-21 3:29 am
回答 (2)
2007-09-21 4:27 pm
✔ 最佳答案
因為 heatsink 只是中「中間人」，他不是「cooling agent」， 用 heatsink 的目的只是幫助系統更有效接觸到系統的「cooling agent」，真正的「cooling agent」是 high heat capacity 的空氣（甚至是水）。如果 heatsink 是 high heat capacity，反而會降低空氣的冷卻效果，令到大部份能量仍然累積在 heatsink 中，不能有效從系統的排出。
2007-09-23 8:33 am
A good heat sink shall have high thermal conductivity rather than high heat capacity.
The mechanism of a heat sink is to conduct away radpidly the heat generated from the source, and for which its conduction property is more important than its heat absorption property.
The mechanism of a heat sink is to conduct away radpidly the heat generated from the source, and for which its conduction property is more important than its heat absorption property.
收錄日期: 2021-04-13 13:33:54
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