I am curious about the effects of oscillation in a heat transfer system. For example consider a simple system consisting of a heat source, a heat sink, and some generic material through which we will flow heat.
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If we stack them all together, without thermal grease or other treatments, then they should transfer heat by [itex]\frac{Q}{t}=\frac{\kappa A(T_{hot}-T_{cold})}{d}[/itex]
where Q= heat transferred, t=time, [itex]\kappa[/itex] = thermal conductivity of barrier, A = area, T= temp, and d=thickness of barrier. Right?
What would be the effect if I were to vibrate the cold side? Instinctively I thought it would interrupt heat flow decreasing Q/t, but I am reading (unless I misunderstand) that sometimes heat transfer is improved by oscillation.
Any thought?
If we stack them all together, without thermal grease or other treatments, then they should transfer heat by [itex]\frac{Q}{t}=\frac{\kappa A(T_{hot}-T_{cold})}{d}[/itex]
where Q= heat transferred, t=time, [itex]\kappa[/itex] = thermal conductivity of barrier, A = area, T= temp, and d=thickness of barrier. Right?
What would be the effect if I were to vibrate the cold side? Instinctively I thought it would interrupt heat flow decreasing Q/t, but I am reading (unless I misunderstand) that sometimes heat transfer is improved by oscillation.
Any thought?