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Heat TransferPicture Presentation

TEAK – Traveling Engineering Activity Kits

Partial support for this project was provided by the National Science Foundation's Course, Curriculum, and Laboratory Improvement (CCLI) program under Award No. 0737462. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

+Conduction Conduction is heat transfer through direct contact.

+Convection Convection is heat transfer between a solid object and the liquid or gas that is passing by it.

NATURAL

FORCED

+Radiation Radiation is heat transfer in the form of electromagnetic waves that carry energy from one object to another.

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A thermal infrared image of a ball before (L) and after (R) being bounced.

A thermal infrared image of a hair dryer and a fluorescent light bulb.

Thermal Infrared Images

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A thermal infrared image of a pencil after being sharpened (L) and of hot brakes in a car (R).

Thermal Infrared Images

Notice the hot tip of the pencil.

+Resources http://images.brighthub.com/A3/9/A391B25B4C25166E2A4F5035DD0DE91AC6204D88_small.jpg

http://www.goodlifeinnovations.com/userfiles/Image/Good%20Life%20Innovations/Liquid%20Crystal%20sheet.jpg

http://purpletrail.com/partytrail/wp-content/uploads/2009/05/roasting-marshmallows1.jpg

http://www.energyquest.ca.gov/story/images/chap01_convection.gif

http://www.physics.arizona.edu/~thews/reu/convection1.bmp

http://www.aviationweather.ws/page024-1.jpg

http://www.uoguelph.ca/geology/geol2250/glossary/HTML%20files/convection.jpg

http://www.wyckoffschools.org/eisenhower/teachers/chen/images/3-14.jpg

http://www.beodom.com/assets/images/blog/principles-thermal-insulation/heat-transmittance-means.jpg