Effect of Solutes on Solution Solubility: Acetone Evaporator

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Discussion Overview

The discussion centers on the effect of solutes on the solubility of other solutes in a solution, particularly in the context of designing an acetone evaporator for thermal management. Participants explore how factors like humidity may influence the effectiveness of the cooling system.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant questions whether the amount of one solute affects the maximum quantity of another solute that can be dissolved or the rate of dissolution.
  • Another participant agrees that the amount of one solute does affect the other but notes a lack of comprehensive models beyond simple cases like the common ion effect, suggesting that existing models may depend heavily on experimental parameters.
  • A later reply expresses skepticism about predicting the effectiveness of the acetone heat rejector, indicating a preference for an experimental approach to engineering solutions.
  • One participant inquires about the configuration of the acetone evaporator, specifically whether the air contacts the acetone directly or if a heat exchanger is used.

Areas of Agreement / Disagreement

Participants generally agree that the presence of one solute can influence the solubility of another, but there is no consensus on the availability or reliability of models to predict this behavior in complex solutions. The discussion remains unresolved regarding the specific implications for the acetone evaporator design.

Contextual Notes

The discussion highlights limitations in existing models for non-ideal mixtures and the reliance on experimental data, which may affect predictions about solubility and dissolution rates.

Praestrigiator
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Does the amount of one solute in a solution effect the maximum quantity of another solute that can be dissolved ino that solution, or the rate of dissolution?
To provide context: I'm thinking of making an acetone evaporator for thermal management purposes. I'm wondering if the humidity of the intake air would be relevant in the effectiveness of the cooler, especially since I would mostly be using it in the summer, when the air is remarkably humid here.
 
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Short answer: yes, it does.

But apart from relatively simple cases (common ion effect) I am not aware of any model describing the behavior of such solutions, and intuition tells me even if they exist (highly probable) they are heavily relying on experimental parameters (as most models dealing with non-ideal mixtures do).

Hopefully I am wrong.
 
Borek said:
Short answer: yes, it does.

But apart from relatively simple cases (common ion effect) I am not aware of any model describing the behavior of such solutions, and intuition tells me even if they exist (highly probable) they are heavily relying on experimental parameters (as most models dealing with non-ideal mixtures do).

Hopefully I am wrong.
Hmm, so I'm SoL when it comes to predicting the effectiveness of my acetone heat rejector? I love the 'build it and hope for the best' method of engineering. It's my favorite.
 
Does the air contact the acetone directly, or is there a heat exchanger with with acetone evaporating on one side of a wall and air cooling on the other side?
 

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