Heat Conductivity with Aluminum Foil

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Discussion Overview

The discussion revolves around the heat conductivity of aluminum foil in relation to various materials, specifically pine, sheet rock, glass, and plexiglass. Participants explore the potential effects of aluminum foil on heat conduction and its role as a vapor barrier in construction.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions whether aluminum foil would enhance heat conductivity with glass and plexiglass compared to pine and sheet rock, and asks about the transition point between insulator and conductor for aluminum foil.
  • Another participant inquires if the original question is related to schoolwork, which is later clarified as stemming from general curiosity.
  • A participant suggests that aluminum foil might slow conduction with high conductivity materials and increase it with low conductivity materials, although they express uncertainty about this assumption.
  • There is a mention of aluminum foil's use in construction primarily as a vapor barrier and reflective insulation, prompting a question about its reflective properties with different materials.
  • A participant asks if aluminum foil would reflect heat more effectively with glass and plexiglass compared to pine and sheet rock.

Areas of Agreement / Disagreement

Participants express various hypotheses regarding the role of aluminum foil in heat conduction, but there is no consensus on its effectiveness or the conditions under which it operates. The discussion remains unresolved with multiple competing views.

Contextual Notes

Participants do not provide specific definitions or conditions under which aluminum foil transitions between being an insulator and a conductor, leaving some assumptions unaddressed.

Who May Find This Useful

Individuals interested in materials science, thermal conductivity, and construction applications may find this discussion relevant.

john325
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TL;DR
When does Aluminum foil help conductivity and prevent it.
If aluminum foil were used to help conduct heat with pine and sheet rock (0.14 W▪m/m2▪°C and 0.43 W▪m/m2▪°C respectively) would it also help conductivity for glass and plexiglass (0.86 W▪m/m2▪°C and 0.19 W▪m/m2▪°C respectively)? When does the transition of insulator and conductor happen for aluminum foil?
 
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Welcome, John! :smile:

How is the assembly of layers, and how is the flow of heat to reduce or increase for each case?
 
For all materials, there is a simple sheet of aluminum foil covering the top. I am thinking in the case of conduction. I am assuming that maybe aluminum foil would act to slow conduction with materials that have high conductivity and increase conduction with those with low conductivity. But I am not sure.
 
So would that mean that it would reflect heat more likely with glass and plexiglass versus the pine and sheet rock? With the pine and sheet rock is it more likely to conduct the heat?
 

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