What is Heat transfer?
'''Heat transfer''' is the way the [[heat]] moves from one [[physical system]] (or body) to another. Heat transfer requires a difference in [[temperature]].<ref name=Muneer1>Tariq Muneer; Jorge Kubie; Thomas Grassie, ''Heat Transfer: A Problem Solving Approach'', Volume 1 (New York: Taylor & Francis, 2003), p. 1</ref> Heat moves from the hotter body (higher temperature) to the colder one (lower temperature).<ref name=Sukhatme1>S.P. Sukhatme, ''A Textbook on Heat Transfer'' (Hyderabad, India: Universities Press, 2005), p. 1</ref> The bodies in question may be in a [[solid]] state, a [[liquid]] state or a [[gas]]eous state.<ref name=Sukhatme1/> There are three modes of heat transfer: [[heat conduction|conduction]], [[convection]] and [[thermal radiation|radiation]].<ref name=Muneer1/> == References == {{reflist}} {{physics-stub}} [[Category:Thermodynamics]] [[Category:Heat transfer]]