fins design project. problem does adding fins to the heating coil of a conventional oven...
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![Page 1: Fins Design Project. Problem Does adding fins to the heating coil of a conventional oven significantly reduce the time required to heat the oven? Objectives](https://reader036.vdocuments.site/reader036/viewer/2022062407/56649d545503460f94a3133b/html5/thumbnails/1.jpg)
Fins Design Project
![Page 2: Fins Design Project. Problem Does adding fins to the heating coil of a conventional oven significantly reduce the time required to heat the oven? Objectives](https://reader036.vdocuments.site/reader036/viewer/2022062407/56649d545503460f94a3133b/html5/thumbnails/2.jpg)
ProblemDoes adding fins to the heating coil of a
conventional oven significantly reduce the time required to heat the oven?
Objectives• Analytically – Set up the problem
• Experimentally – Run an experiment to see how accurate our analytical approach is
![Page 3: Fins Design Project. Problem Does adding fins to the heating coil of a conventional oven significantly reduce the time required to heat the oven? Objectives](https://reader036.vdocuments.site/reader036/viewer/2022062407/56649d545503460f94a3133b/html5/thumbnails/3.jpg)
Fins
![Page 4: Fins Design Project. Problem Does adding fins to the heating coil of a conventional oven significantly reduce the time required to heat the oven? Objectives](https://reader036.vdocuments.site/reader036/viewer/2022062407/56649d545503460f94a3133b/html5/thumbnails/4.jpg)
Analytical Solution
ower
TTVct
Vc
owertTT
owerVt
Tc
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poa
ap
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![Page 5: Fins Design Project. Problem Does adding fins to the heating coil of a conventional oven significantly reduce the time required to heat the oven? Objectives](https://reader036.vdocuments.site/reader036/viewer/2022062407/56649d545503460f94a3133b/html5/thumbnails/5.jpg)
Analytical Assumptions
• Our model lumps all 3 heat transfer modes
• Assume no energy loss
• Assume constant air density
• Assume constant specific heat
![Page 6: Fins Design Project. Problem Does adding fins to the heating coil of a conventional oven significantly reduce the time required to heat the oven? Objectives](https://reader036.vdocuments.site/reader036/viewer/2022062407/56649d545503460f94a3133b/html5/thumbnails/6.jpg)
1st Experiment: conventional oven
Equipment:
• Conventional Oven
• Thermocouple
• Stopwatch
![Page 7: Fins Design Project. Problem Does adding fins to the heating coil of a conventional oven significantly reduce the time required to heat the oven? Objectives](https://reader036.vdocuments.site/reader036/viewer/2022062407/56649d545503460f94a3133b/html5/thumbnails/7.jpg)
2nd experiment: conventional oven with fins
Equipment:•Conventional Oven•Thermocouple•Stopwatch•46 Fins
![Page 8: Fins Design Project. Problem Does adding fins to the heating coil of a conventional oven significantly reduce the time required to heat the oven? Objectives](https://reader036.vdocuments.site/reader036/viewer/2022062407/56649d545503460f94a3133b/html5/thumbnails/8.jpg)
Experimental Results
TSteady State 71° F
TWhen Buzzer Sounds 456° F
tto reach 350° F6:08.75
tto buzzer3:55.08
With Fins Without Fins
TSteady State 71°
TWhen Buzzer Sounds 442°
tto reach 350° F6:53.03
tto buzzer4:47.92
![Page 9: Fins Design Project. Problem Does adding fins to the heating coil of a conventional oven significantly reduce the time required to heat the oven? Objectives](https://reader036.vdocuments.site/reader036/viewer/2022062407/56649d545503460f94a3133b/html5/thumbnails/9.jpg)
ConclusionPlacing fins on the heating coil decreased
the amount of time needed to heat the oven
Recommendations• Find a better way to measure the
temperature of the heating coil