1 / 10

PUMPKIN GUTS

PUMPKIN GUTS. ME 340 Heat & Mass Transfer FINAL PROJECT Authors: Jessica Bauer & Marina Samuels. Cooking Problems. Marina loves homemade chocolate chip cookies but every time she put them in the oven they always end up a little bit burned.

kipling
Télécharger la présentation

PUMPKIN GUTS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PUMPKIN GUTS ME 340 Heat & Mass Transfer FINAL PROJECT Authors: Jessica Bauer & Marina Samuels

  2. Cooking Problems • Marina loves homemade chocolate chip cookies but every time she put them in the oven they always end up a little bit burned. • When it came time for Thanksgiving, Marina wanted to make a pumpkin pie for her sister, who loves pumpkin pie. • Unfortunately, Marina didn’t know how to overcome her cooking problem. • Her good friend Jess had just the solution. ME 340 Heat & Mass Transfer

  3. The Model • Lumped Capacitance Model: • Assumption: The thin metal container, the pie crust, and the pumpkin pie filling are approximated as a short cylinder of one solid material that is spatially uniform • Reminder: The temperature is a function of time only ME 340 Heat & Mass Transfer

  4. Dimensions H D ME 340 Heat & Mass Transfer

  5. Finding Properties • We calculated a weighted average to find cp and densities ME 340 Heat & Mass Transfer

  6. Finding h • In order to find the exterior flow h, we modeled the cylinder as a horizontal flat plate of characteristic length L = As/P = D/4 ME 340 Heat & Mass Transfer

  7. Finding t • Back to the lumped capacitance model: We are looking for the exact amount of time t that Marina should bake the pumpkin pie in the oven ME 340 Heat & Mass Transfer

  8. Temperature vs Time ME 340 Heat & Mass Transfer

  9. Problem Solved • If the pie crust needs to reach 400K (260.6⁰F), the graph lists t = 4440 sec = 74 minutes, which is close to recipe instructions so we know our model is valid • Now Marina can cook perfect pumpkin pie for her sister ME 340 Heat & Mass Transfer

  10. Sources density of pumpkin - http://www.aqua-calc.com/page/density-table specific heat of pumpkin and flour - http://www.engineeringtoolbox.com/specific-heat-capacity-food-d_295.html density of crust - http://www.aqua-calc.com/page/density-table specific heat of oil, milk - http://www.engineeringtoolbox.com/specific-heat-fluids-d_151.html specific heat of salt - http://www.engineeringtoolbox.com/specific-heat-solids-d_154.html specific heat of cane sugar (close to sugar) - http://www.armstronginternational.com/files/common/allproductscatalog/cg-53.pdf ME 340 Heat & Mass Transfer

More Related