what is transfer of heat and explain its types???????
Answers
Answer:
Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy (heat) between physical systems. Heat transfer is classified into various mechanisms, such as thermal conduction, thermal convection, thermal radiation, and transfer of energy by phase changes. Engineers also consider the transfer of mass of differing chemical species, either cold or hot, to achieve heat transfer. While these mechanisms have distinct characteristics, they often occur simultaneously in the same system.
Answer:
When two bodies are in thermal contact with each
other, there is a transfer of energy from the body at
hugher temperafure to the body at lower tempera-
ture. The energy in transter is called the heat Also
when two parts of a body are at different tempera-
tures, there is a transter of energy from the part at
higher temperature to the other part. The SI unit of
heat is the joule.
INote: Count Rumford Benjamin Thonpson
(1753-1814) Anglo-American adventurer, social
reformer, inventor and physicist, measured the relation
between work and heat. When he visted ATsenal in
Muich, he tond that tremendlous amount ot heat was
produced in a short time when a brass cannon was being
bored. He found that even with a blunt borer a lot of heat
can be produced trom a piece ot me tal. At that time t
was thought that heat consists ota thud called caloric.
Rumford's cxperiments showed that caloric did not exist
and heat is the motion of the particles of a body. He
measiired the relation beween wOTk done and corre
ponding heat produce. The result was not acurate, but
important n developiment ot thermocdynamics