Can an egg be cooked inside a car

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Can an egg be cooked inside a car
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Heat

• What is heat?
• Thermal energy in transit from one body of a
  higher temp. to another of a lower temp.
• How is heat transferred?
• Conduction
• Convection
• Radiation

Wikipedia, Heat, viewed 18th September 2006,
http//en.wikipedia.org/wiki/ImageHot_metalwork.j
pg
3
Conduction, Convection Radiation
Conduction, convection and radiation 2006, Brock
University, Canada, viewed 30th September 2006,
lthttp//www.physics.brocku.ca/courses/1p23/images/
FG11_16.gifgt
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Temperature

• What is Temperature?
• The measure of the tendency of a substance to
  give off energy
• How does heat relate to temperature?
• Heat transferred is proportional to the
  temperature change of the body

SF Environment, Mercury in the Environment,
viewed 18th August 2006, www.sfenvironment.com/ima
ges/thermometer.jpg
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Vehicle Heating DynamicsWhy and how the interior
of a car heats up

• Cars act like greenhouses
• Heat radiates through windows and heats interior
  objects
• These objects then radiate this heat but is
  reflected by the windows
• The heated objects also warm the adjacent air
  through conduction and convection

• Department of Geoscience, San Francisco State
  University 2006 Hyperthermia Deaths of Children
  in Vehicles, viewed 12th September 2006

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Possible Ways of Increasing the Interior
Temperature of a Car
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Factors that impact on car temperature

• Larger cars can heat up just as fast as small
  cars
• Metals are much better conductors but because
  naturally shiny, they don't absorb a lot of light
  unless they are painted.
• Dark colours absorb more energy that lighter
  colours.

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The perfect situation to create a hot interior

• A large car will heat up faster than small cars.
• Larger than normal windows allow light to pass
  through.
• No tinting on any windows.
• No covering on steering wheel, dash or windows.
• Dark upholstery.
• Black leather seats.
• Darkly painted or chrome metal steering wheel and
  gear stick.

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Factors to allow for when filming.

• The recommended car is a 1992 Mazda 626 Hatchback

Cars guide 2006, Mazda 626 1992 Hatch, Viewed
15th September 2006, http//www.carsguide.com.au
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Temperature Conditions

• A temperature during the day of at least 30
  degrees
• A clear day with little or no clouds in the sky
• A low wind-chill factor
• Start the experimentby 10am

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Testing Requirements

• Car parked in direct sunlight facing the sun
• Metal tray and Metal bowl
• 3 eggs
• Three thermometers, one must be waterproof
• A Stopwatch

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What is the likely outcome?

• For egg to cook
• Egg white must reach a temp. of 60C
• Egg yolk must reach a temp. of 65C
• From data collected from 11 cars
• Only two cars had interior temps greater then
  60C
• Only one car had interior temps greater then 65C

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Will the egg cook?

• Will an interior temp of 65C cook an egg?
• How long will it take cook an egg at 65C?
• Is the temp. sustained within the car long enough?

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Conclusions

• What will happen?

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RecommendationsThe Car

• No tinting on any windows.
• No covers on steering wheel, dash, or windows.
• The interior should be fabricated and painted
  black.
• The seats should be replaced with black leather
  seats.
• The exterior of the car should be painted Black.
• The steering wheel and gear sticks should
  replaced with be metal or chrome components.

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Parking

• The car should be parked in
• direct sunlight,
• between the hours of 10am and 4pm as the test
  should be conducted over a minimum 6 hour time
  period,
• a westerly facing direction,
• an area protected by the wind to maximise
  potential result.
• the best time of year would be in the summer when
  temperatures are typically high.

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RecommendationsOther

• The test should be conducted over a minimum 6
  hour time period.
• Three thermometers are vital to maximise
  measuring accuracy.

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Bibliography

• Brock University, 2006, Canada Conduction,
  convection and radiation, viewed 30th September
  2006, http//www.physics.brocku.ca/courses/1p23/im
  ages/FG11_16.gif Gosline, Anna 2005, Cars develop
  killer heat, even on cooler days,
  NewScientist.com news service, viewed 12th
  September 2006, http//www.newscientist.com/articl
  e.ns?iddn7631
• Komsomolskaya Pravda, 2006, How To Cook an Egg
  with Mobile Phones, Viewed 26th September 2006,
  http//www.crorepixels.com/egg.htm
• Loy, Jim 2002, The Greenhouse Effect, Personal
  Educational website, viewed 12th September 2006
  http//www.jimloy.com/physics/green.htm
• Null, Jan 2006, Hyperthermia Deaths of Children
  in Vehicles, Department of Geosciences, San
  Francisco State University, viewed 12th September
  2006 http//www.ggweather.com/heat/
• Queen, 1975, Im in love with my car, A Night at
  the Opera EMI