熱傳導

熱傳導(Conduction)是指界質本身具有溫度差異,熱能由高溫向低溫部分傳遞,透過分子傳遞振動能的現象。熱傳介質可能是固體或是穩定不動的流體,不同的介質的熱傳特性不同,一般來說固體>流體,固體之中又以金屬的熱傳性能最好。

熱傳導的規律如下式所表示,又稱為傅立葉定律。微觀來看,單位時間內,通過單位面積的熱量,與負的溫度梯度和材質熱傳導係數成正比,

Conduction-1

假設介質式穩定均勻的材料,兩端的溫度恆定,那一維的熱傳導公式可以整理為:

Conduction-2

 qx ,  Heat transfer rate in the positive x direction
Κ ,    Material’s thermal conductivity (W/m•K)
A ,    The cross-sectional area (m²)
∆Τ ,  The temperature difference (K)
∆X ,  The heat transfer length (m)

Conduction-3

Comments are closed.

  • ABOUT US

    Founded in August 2010,Cooling House is an established Asia-based design house for innovative thermal solutions and is headquartered in Taipei. Cooling House holds patents for several cooling technologies and product concepts.



    Read more.....

  • Newsletter Subscription

  • HQ Address

    Cooling House Co., Ltd.
    2F No.10, Wugong 5th Road, Wugu District, New Taipei City 24890, Taiwan (R.O.C.)

    冠昊有限公司
    24890 新北市五股區五工五路10號2樓

    Tel: +886 (0)2 2298 3872
    Fax: +886 (0)2 2298 3872

    General enquiries:
    Tel: +886 (0)2 2298 3872
    E-mail: sw@coolinghouse.com
  • Office Directions

Copyright © 2014 - 2019 Cooling House All rights reserved.