HEAT TRANSFER

HEAT  TRANSFER

• Exchange  the  thermal  energy  by   physical  systems.
• The  fundamental  modes   of  heat  transfer  is  conduction, diffusion, radiation, convection.
• Heat  transfer  occur  region  from  a  high  region   to  high  temp.  to   the  region  a  lower   temp..
• Heat  transfer  changer  internal  energy  according  to  first  law  of  thermodynamics.
• The   second  law  of  thermodynamics  defined  the  concepts  of  thermodynamics  entropy,  by  measurable heat  transfer.  

HEAT  EQUATION

The  heat   equation  is  a  partial  differentiation  equation   that   describes  the  distribution  of   heat  in  a  given   region  of  time.  In  some  cases  the  exact  equations  are  available.  In   other  cases   the   equation  must  be  solve  by  computing  methods.

HEAT   EXCHANGER 

The  heat  exchanger  is  used  for   more  efficient  heat   transfer.It  is   used  in  refrigeration, air  conditioning, space  heating ,  power  generation,  Common  type  of  heat   exchangers  flows  include  parallel  flow,  counter  flow.  

HEAT  TRANSFER  IN  A  HUMAN   BODY

The  principles  of   heat  transfer  in  engineering  systems  can  be   applied    to  the   human  body  in  order   to   determine  how  the  body   is   transfer. Heat  is  producing  continuously  in  body  metabolism  of  nutrients  which   provides  energy  to  the  system.The   human  body  must  maintain  a   constitent  in  order  to  maintain  healthy  bodily  function. Heat  transfer  occur  more  in  body  when  when  the  temperature  of  surrounding  is  significantly  less  than  the  normal  body  temperature.The  normal  body  temperature  is  approximately  37;c.