散热行业待了几年,一个很尴尬的情况是,很多人都认为散热设计非常简单。社会上绝大多数产品的热设计,实际是热猜测,猜测它没问题,于是就那么做了。很多人期待花个半个小时和热设计大拿交流下,就可以进行散热设计了,而对于真正核心的知识(往往复杂枯燥),却嗤之以鼻。实际上,迅速具备解决问题的能力是所有人的期待,但散热设计,的确并不是参加个把研讨会,你就可以搞定了。
实际上,急功近利的心态,国内有,国外更甚。Clemens J.M. Lasance深知其因。链接中的文章中,读者应该可以感受到Clemens对这种认知的愤怒与恐慌。在此我只摘录他的结论。
http://www.electronics-cooling.c ... mance-calculations/
Conclusion
The starting point for this column was my experience with a heat sink webinar. I was not happy with the approach that it was presented, and the reasons why have been outlined in this column.
To all who want to transfer basic heat sink knowledge: tell facts, not fairytales. The fact is that reality is complex. Basic heat transfer about conduction, convection and radiation: OK, but tell the attendees also that in order to realize a competitive edge in eventual sales, much more knowledge is needed than some limited and outdated design rules. Compare it with electronic design: nobody believes that one is capable of designing a functional printed circuit board (PCB) after attending a webinar of half an hour. After this column one should understand why it is not simple to assess heat sink performance, which should be the bottom line.
我们在传播热设计知识时,我们应当告诉大家事实,而不是神话故事。事实就是, 现实的具体应用是复杂的。根本不可能说你知道了简单的几个公式,几条早已广为流传的设计建议,就说OK了。你可能完全还不知道怎么进行设计,这些公式和设计建议,在很多情况下甚至将你引入完全错误的方向。实际情况就是这么复杂。简单的定则是一个神话故事,而它只能是一个美好的梦想。
想真的把散热搞好,没那么简单。踏实干吧。
|