Thermal conductivity-ceramics-refractory , Mechanical Engineering

Thermal Conductivity

The amount of heat passing throughout unit cross-section of a solid material in unit time for unit thermal gradient is termed as thermal conductivity. The units of thermal conductivity are as: JH/m/s/K or else W/m/K. The heat conduction arises from higher temperature to lower temperature such is opposite to direction of thermal gradient.

The thermal conductivity in solid material is because of:

i.  Elastic vibration of atoms or molecules whereby energy is transmitted in from of kinetic energy of vibrating units, and

ii. Movement of electrons.

Given figure shows the variation of thermal conductivity throughout temperature for metallic materials.

                                                         450_Thermal Conductivity.png

                                   Figure: Thermal Conductivity of Metals varying with Temperature

Posted Date: 2/27/2013 1:39:30 AM | Location : United States







Related Discussions:- Thermal conductivity-ceramics-refractory , Assignment Help, Ask Question on Thermal conductivity-ceramics-refractory , Get Answer, Expert's Help, Thermal conductivity-ceramics-refractory Discussions

Write discussion on Thermal conductivity-ceramics-refractory
Your posts are moderated
Related Questions

Explain Gear Milling Milling is a form-cutting process limited to making single gears for prototype or very small batches of gears as it is a very slow and uneconomical method


Find out the safe power transmitted by pulley: A belt drives pulley of 200mm diameter such that ratio of tensions in tight side and slack side is 1.2. If maximum tension in b

explain surfacechemistry and electrochemistry of membranes?

Use the graphics and the equation to define the term principal stress and principal planes.

Copper Alloys Some alloys of copper are employed in industry for varying causes. Copper forms alloys along with zinc or the brasses, tin or the bronzes, along with tin and pho

Stitch welding Here, a series of overlapping spot welds are made with the spot welding machine using the conventional electrode tip. Both water tight and gas tight joints can b

Evaluate mechanical work in different steady flow process: Work done by steady flow process   and work done in non flow process,   1. Constant Volume Process; W 1-2 = V

Die Press Assembly Drawing The objective of this assignment is to demonstrate the following concepts of design. • Extrude • Revolve • Fillet • Dimensioning • Tolerance • Bas