Thermal conductivity Definition and 173 Threads

Is there a way to convert thermal conductivity to the diffusion coefficient? Or is there a way to use the thermal conductivity in Fick's Law?

Hi all, I remember reading somewhere that Cast iron in general has a uniform thermal conductivity k of approx. 47-55, and this remains the same for a wide range of temperatures, im not sure if this is correct, if anyone has any information on this subject, that would be great, if i could...

thermal conductivity chart. "K" can someone tell me where i can find the thermal conductivity chart, K it's in the format of J/s m C

I need Info...! Homework Statement I need information on the thermal conductivity of gas . thank you so much . Homework Equations The Attempt at a Solution

In a thermal conductivity table, what does the temperature column represent in respect to the given coefficient "K" ? E.G http://www.engineeringtoolbox.com/thermal-conductivity-metals-d_858.html does it represent the heat capacity of the material?

I think the answer is yes, but I just wanted to check. If you have several sheets of different material, is the total thermal conductivity the sum of the individual thermal conductivities?

Uhmm.. i faced some problem with my experiment of finding the thermal conductivity of glass..i hope that someone can help me. May i know the extimation of the thermal conductivity of a boiling tube?? isit the same as the thermal conductivity of pyrex glass?? when i want to find the radius...

For my advanced higher physics investigation I've been given the topic of thermal conductivity. Basically I am going to investigate the thermal conductivity of different metals and compare them to the electrical resistance of the metal as I believe that those with low electrical resistance...

Homework Statement Solid cylindrical copper rod 0.2m long has one end maintained at temperature 20K, other end blackened and exposed to thermal radiation from surrounding walls at 500K. As the rod is insulated, no energy is lost or gained except at the ends of the rod. When equilibrium is...

Does the k value have any relationship with the temperature of the wall (use of the word wall becuase that is what the k value is mostly used with).

Hello, Assume that we have a pipe flowing with air of around 80 degrees F surrounded by air of approximately 140 degrees F. The pipe can be made out of three materials: Aluminum, Mild-Steel, and Stainless Steel. What material would it be best to use for the pipe in order for the air flowing...

I had the following question on a Physics Quiz and I am wondering why the answer is D. When you walk barefoot in a room, the floor feels cooler walking on a tile floor as compared to a wooden floor because A) tile has a smaller specific heat than wood. B) tile has a larger specific...

Someone once told me that almost all alloys have poorer thermal properties then their component metals. Is this true? I want to have a little experiment but I don't want to do it if I know all the results will be crap.

Is there any direct relationship between these 2 properties of a matter?

A cylinder with a piston is filled with ideal gas. The gas temperature is held at 500K. The cylinder is heated by an oven through a square metal rod connected between the oven and the cylinder. The rod has sides 2.5cm and length 2m. (a) If the oven is held at 1300K, and the heat current...

Hello. I just wanted to know if a material in the LIQUID state has a higher thermal conductivity than the same material in the SOLID state. I am thinking specifically about the metals, but I suppose it should be the same for non-metals (or not?).

Hi there,...this isn't homework..its more to my practical...anyways...from the attachment given..that is the first page of my practical guide...the problem is...on the procedure part...it asked me to plot a graph of lg temp againts t ...if i do so...how do i get the thermal conductivity of glass...

Hello, This is a homework problem for my Introductory Physics(no calculus) class but it's relatively simple so I opted to put it under high school. First I'll state the problem then my thoughts. A copper rod (k = 390) has a length of 1.5 m and a cross-sectional area of 4.00*10^-4 m^2...

Hi, i would appreciate any help i could get on this, thanks. I'm stuck on part of a biomechanics assignment which is to work out the thermal conductivity of neoprene. I've done this part but am having difficulty on the following question; "Using the value that you have obtained for thermal...

I need a simple method of measuring thermal conductivity of liquids for a school project. I have access to the school's science labs, so I can get the basic equipments (hopefully). All I need is a method of measuring thermal conductivity.

Please Help! Thermal Conductivity :eek: Hi. I need help with the thermal conductivity units. I took the slope of a Natural log(temperature change) Vs. Time graph ( degrees Celsius/unit time) and I need a conversion to Watts per Meter Celsius. If anyone could help that would be great since I...

Hiya! The thermal conductivity al Al is twice that of brass. Two rods (1 Al and the other brass) are joined together end to end in excellent thermal contact. The rods are of equal lengths and radii. The free end of the brass rod is maintained at 0 degrees C and the Al free end is heated to...

Hi... there is a question i can't figure out. "A 400-g stainless steel tea kettle containing 500g of water is on top of the stove.The portion of the tea kettle that is in contact with the heating element has an area of 0.005m^2 and is 2.5mm thick. At a certain moment,the temperature of the...