Heat Transfer in Elephant Ears: Convection and Radiation

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Homework Help Overview

The discussion revolves around the mechanisms of heat transfer in elephant ears, specifically focusing on how these large structures help regulate body temperature through convection and radiation.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the roles of radiation and convection in heat transfer, questioning the accuracy of attributing heat loss solely to radiation. There is consideration of the surface area of the ears and its impact on heat exchange. Some participants inquire about the applicability of convection in this context and compare it to other heat transfer mechanisms.

Discussion Status

The discussion is ongoing, with various perspectives on the mechanisms of heat transfer being explored. Some participants suggest that both convection and radiation are relevant, while others express uncertainty about the dominance of one method over the other. Analogies, such as that of a car radiator, are introduced to further the conversation.

Contextual Notes

Participants are navigating assumptions about heat transfer methods and the specific biological context of elephants. There is a lack of consensus on the primary method of heat loss, with some participants leaning towards radiation while others advocate for a combination of methods.

wakejosh
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Homework Statement





elephants have large ears because they need additional skin to balance the large amount of mass (to balance the heat eleminated from their skin with the heat generated by their body mass) by which methods of heat transfer do the ears eliminate excess body heat?



The Attempt at a Solution



radiation would be an obvious choice, but I am wondering if it would be more accurate to say Convection and Radiation . any thoughts?
 
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I'm thinking of different answers. Compare the *amount* of heat transferred by each of the 3 traditional energy transfer mechanisms...
 
Well the ears give the elephants skin a large surface area. Which form of heat exchange would that benefit most?
 
so, is convection only applicable in fluids? I don't see why it wouldn't be both.
 
alright reading them over I would probably say it is only by Radiation. is this correct?
 
Think about a radiator in a car as an anology. Why is it actually misnamed? How does the heat get from the engine to the metal of the radiator? What flows through the radiator, and why?
 

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