Lecture Notes for MAE 4171 - Princ of Heat Transfer with Mitra at Florida Tech (FIT)

Notes Information

Material Type:Class Note
Class:MAE 4171 - Princ of Heat Transfer
Subject:Mechanical/Aerospace Engineer
University:Florida Institute of Technology
Term:Spring 2010
  • Time Interval
  • Thermal Energy
  • Open System
  • Energy Transfer
  • Temperature
  • Surroundings
  • Application
  • Special Case
  • Phase Change
  • Constituent
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Sample Document Text

Heat Transfer: Physical Origins and Rate Equations Chapter One Heat Transfer and Thermal Energy ‡ What is heat transfer? Heat transfer is thermal energy in transit due to a temperature difference. ‡ What is thermal energy? Thermal energy is associated with the translation, rotation, vibration and electronic states of the atoms and molecules that comprise matter. It represents the cumulative effect of microscopic activities and is directly linked to the temperature of matter. Heat Transfer and Thermal Energy (cont.) DO NOT confuse or interchange the meanings of Thermal Energy, Temperature and Heat Transfer Quantity Thermal Energy+ Meaning Energy associated with microscopic behavior of matter Symbol Units U or u J or J/kg Temperature A means of indirectly assessing the amount of thermal energy stored in matter T K or °C Heat Transfer Thermal energy transport due to temperature gradients Amount of thermal energy transferred over a time interval U t " 0 Thermal energy transfer per unit time Hea...

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