All Questions
Tagged with materials heat-transfer
22
questions
0
votes
0
answers
13
views
Plane strain delamination on bilayer material (conversion from material stress state to residual force and moment)
I have been reading the book The Mechanics and Reliability of Films, Multilayers and Coatings (https://doi.org/10.1017/9781316443606) on chapter 4.2 and got stuck in chapter 4.2 and 4.3.
Suppose that ...
0
votes
1
answer
36
views
Dissimilar Metals In A High Heat Environment
Summary:
Have two pieces of metal (7075 Aluminum & 4140 Steel) that appear to have fused together.
Details:
Machined a Flash Hider for a rifle. Purpose was to direct all escaping gas forward, ...
1
vote
0
answers
224
views
Can pyrolytic graphite sheets effectively be used as a thermal gap-fill interface?
Pyrolytic graphite sheets are used as a high-performance thermal interface in applications with high power density because they can have a very high conductivity of 1000+ W/mK, but only in the ...
- 11
2
votes
3
answers
181
views
What happens to insulation?
What exactly happens when an insulating material comes in contact with heat through any mode (conduction, convection, or radiation). Something like aluminized mylar will reflect the heat back. How ...
- 39
1
vote
0
answers
211
views
Electric heating element inside refractory concrete
I'm thinking of making an electric pizza oven in my free time. My thinking at the moment is to have one kilowatt electric heating elements in the bottom as well as the top of pizza oven. I would like ...
- 11
0
votes
2
answers
875
views
Aluminum or Copper, which one is better to control and maintain the temperature?
Friends, I am an EE/SW/Controls eng. Please, pardon me of perhaps incorrect terminologies.
I am working on a R&D project: A chemical lab equipment has a 2" long metal pipe enclosed in ...
- 105
3
votes
2
answers
222
views
Do all thermoelectric generators (TEG) require two distinct metals?
Most thermocouples that I've seen being sold online consist of two separate metal wires connected at junctions. Many smaller thermoelectric generators consist of a combination of iron and copper or ...
- 105
1
vote
3
answers
83
views
Material selection of heating element
I am interested in heating coils which are heated using Ohmic/Joule/resistive heating - specifically, how the material for the heating coil is selected.
When I read about heating coil materials - ...
- 121
1
vote
1
answer
8k
views
Safe temperature thresholds for #2 HDPE and #5 PP plastic
It would be convenient to use a temperature adjustable heat plate (element)/mug warmer for the massive amount of blender bottles accumulated over the years.
What are safe thresholds to safely warm the ...
- 111
0
votes
3
answers
40
views
Thermal Non-Insulators?
I need a clear material that will allow sun in but won't insulate heat. Sun sun rays get in but doesn't trap heat. Any ideas?
- 1
0
votes
0
answers
61
views
Will a video projector submerged in mineral oil still work?
I’ve seen folks submerge computers in mineral oil to cool them- but would doing the same to a video projector profoundly throw off its internal optical aspects? I’m considering one of those small “...
- 1
0
votes
1
answer
796
views
Which is more important XY plane thermal conductivity or z direction thermal conductivity?
Im seeking an alternative to thermal grease/ pastes. I was researching graphite pads when I stumbled across the soft PGS line from Panasonic.
I need to choose a suitable thermal interface material ...
- 1
1
vote
1
answer
22
views
Heats affect on material permeation?
I know that heat affects material permeation (increasing it); but I have not been able to find much in the way of data other than biologically, on how it effects materials such as plastics.
Does ...
- 143
4
votes
2
answers
333
views
Winding a wire heating element after a few uses
I bought recently 10 meters of Kanthal A1 AWG18 wire, which is a type of heating element (FeCrAl alloy). I intend to make a coil out of it, but it's no use doing that right now, I need more of it for ...
- 53
1
vote
2
answers
158
views
Governing emissivity
I am trying to design a heat source for use with testing the functionality of an infrared thermometer. I am happy with my circuit, I have a surface heated to a nice, constant 50°C (as constantly ...
- 111