Heat Transfer in Layered Walls: Will Ice Melt?

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Discussion Overview

The discussion revolves around the heat transfer in layered walls with varying thermal conductivities, specifically addressing whether ice will melt at the last layer maintained at freezing point while the first layer is at room temperature. The context includes theoretical considerations and practical applications related to building insulation and temperature maintenance.

Discussion Character

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

Main Points Raised

  • One participant suggests that since heat transfers from hot to cold, the ice should melt due to the heat from the room temperature layer, assuming a heat source exists.
  • Another participant posits that if the system maintaining the inner layer's temperature can effectively remove heat as it enters, the ice will not melt.
  • A clarification is sought regarding the nature of the system, specifically whether it is a sealed container maintaining freezing temperatures.
  • Participants discuss the implications of insulation, noting that better insulation would reduce heat transfer and thus require less energy from the heat pump to maintain temperatures.

Areas of Agreement / Disagreement

Participants express differing views on whether the ice will melt, with some arguing it will due to heat transfer and others contending it will not if the temperature maintenance system is effective. The discussion remains unresolved with multiple competing perspectives.

Contextual Notes

Assumptions about the efficiency of the temperature maintenance system and the specifics of the layered wall construction are not fully defined, leaving some uncertainty in the discussion.

eden
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hi I am new here

a query about heat transfer-
there are layered walls with different conduction coefficient.
the last layer is maintained at freezing point while the first is at room temperature
my question is will the ice not melt at the last layer considering that its temperature is maintained?

thanks
 
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Since heat is trasferred from hot to rather cold material and room temperature and outer-layer wall's temperature is constant, Ice should melt.

There must be some "heat source" inside the room. (I recognized that room temperature is higher than freezing point.)

Then Ice covering outer wall get exactly same amount of heat that heat source is making inside the room.
 
Last edited:
If whatever is maintaining the temperature of the inner layer is able to pump the heat out as fast as it can come in then no, the ice will not melt.
Edit: What exactly are you describing? Is this like a sealed container with the inside at freezing temperature, or something else?
 
Drakkith said:
If whatever is maintaining the temperature of the inner layer is able to pump the heat out as fast as it can come in then no, the ice will not melt.
Edit: What exactly are you describing? Is this like a sealed container with the inside at freezing temperature, or something else?

yes a closed environment with a hyothetical system maintaining the temeratures at the ends. the layers of the confinements of a house is its most practical application.
 
Last edited:
eden said:
yes a closed enviroment. the layers of the confinements of a house is its most practical application.

Then yeah, if your heat pump can keep up with the rate of heat absorption into the inside, then the temperature will stay the same. Better insulation results in having to do less work as there will be less heat transfer per unit of time.
 

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