The number of fins on the plate has a direct correlation with Nfin and Qfin as

The number of fins on the plate has a direct

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The number of fins on the plate has a direct correlation with Nfin and Qfin as well. Increased number of fins leads to an increased Qfin for each fin. While an increase in the number of fins decreases the fin efficiency, or Nfin.
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Kevin Lohr Div 17 10/2/2015 For all plates the Hplate value was substantially greater than Hfin. The addition of fins increased both the Hfin and Hplate values. Hfin for the single fin plate was about 38% of Hplate, while Hfn for the double finned plate was about 45% of Hplate. Conversely the Rtotal and Rcontact values decreased with the addition of fins. While the Rtotal value was a product of the difference between plate surface temperature and ambient temperature, the Rcontact value was a product of the difference between the plate surface temperature and the temperature of the fin base. In both cases the addition fins lead to a decrease in steady state temperature which led to lower resistance values. For both the single fin plate and the double finned plate the Rcontact value was about 80% of the Rtotal value. Conclusion In conclusion it is evident that the addition of fins is very effective in increasing convective heat transfer for a surface of device. This is because of the increased exposed surface area created by the fins. Appendix 1 – Fluke Thermography Images
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Kevin Lohr Div 17 10/2/2015
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Kevin Lohr Div 17 10/2/2015
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  • Spring '12
  • Cane
  • Heat, Heat Transfer, fin, steady state temperature, Kevin Lohr

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