Quote:
Originally posted by Gulp35
This statement changed my mind about this issue.
Originally, when a low flow block was mentioned i thought of some thing like the maze 4 ( confusing low flow and low resistance), so in a block like this there isn't as much turbulent flow as laminar and convective heat transfer. Therefore raising the flow would not cause such a great change in performance ( steeper (sp?) initial d(c/w)/d(flow) ).
But in a block like the cascade or WW performance is better with higher velocity,sacrificing of higher possible flow. So If you used something like the Cascade Peltier sized to warm the cold plate wouldn't that work better?
So in the end isn't this just another Flowrate disscussion ( note: that argument was ended saying more flow is always better ( as mentioned earlier)).
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This is a different situation altogether. In a straight waterblock loop, the stored energy in the bp at equalibrium will determine die temp. Higher flow lowers this stored energy at equalibrium, effecting die temp accordingly.
Here we are arguing the flowrate for best chiller performance. The reverse is true in this situation. You want higher stored thermal energy in the cold plate at equalibrium for the detaT differential Cathar pointed out to raise efficiency of the tec. Lower flowrate does this.
How this effects the whole system loop is another discussion. To me it seems clear that this approach will enable extremely low flows with the use of a tec to equal or better the use of a high flow pump without a tec. BillA's showing was of a unit that has dual tecs and dual coldplates and has shown data that looks promising (below ambient die temps).